Analysis & Geometry Seminar: Aim & Scope
This is the weekly research seminar of the analysis & geometry-interested people in Antwerpen. During the semester, we'll have once per week a research talk in analysis and/or geometry and/or related topics. The list of speakers comprises researchers from Antwerpen as well as other universities.
To be added/deleted from the mailing list, please send an email to:
sonja dot hohloch AT uantwerpen dot be
2025/26 --- 2nd semester (spring)
Usually Wednesdays 16:00 - 17:00h in M.G.006
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Feb 11, 2026
no talk (first week of semester)
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Attention: FRIDAY Feb 20, 2026 in M.G.005 !!!
This is a joint session with the Algebra, Geometry, and Number Theory Seminar that takes place on Friday, Feb 20, 2026 in M.G.005 during 14:00h - 15:00h with a talk by (Université de Bretagne Occidentale) on "Stable toric sheaves", the abstract can be found on the webpage of the Algebra seminar.
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Feb 25, 2026
Speaker: Frieder Jäckel (ULB)
Title: Closed Einstein manifolds of negative curvature.
Abstract:
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March 4, 2026
No talk due to "Moving Forward" event for UA master students
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March 11, 2026
Speaker: Danyu Zhang (Luxembourg)
Title: Non-algebraic Anosov flows in higher dimensions.
Abstract:
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March 18, 2026
Speaker: Antoni Lopez Martinez (Valencia)
Title: Quasi-rigidity in Linear Dynamics.
Abstract:
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March 25, 2026
No seminar since many people are traveling.
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April 1, 2026
Speaker: Alexey Bolsinov (Loughborough)
Title: Frobenius algebras and integrable geodesic flows with quadratic integrals
Abstract:
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April 8, 2026 [Easter break; Benelux congress in Antwerp!]
no talk
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April 15, 2026 [Easter break]
no talk
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April 22, 2026
Speaker: Ivo De Smedt (Antwerpen)
Title: Drawing 5-dimensional manifolds using contact geometry.
Abstract:
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April 29, 2026
Speaker: David Tewodrose (VUB)
Title: Spectral properties of symmetrized AMV Laplacians.
Abstract:
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May 6, 2026: Attention! 2 Speakers!
1st Speaker: Tom Verschueren (Antwerpen)
Title: tba.
Abstract: tba.
2nd Speaker: Lowie Rombouts (Antwerpen)
Title: tba.
Abstract: tba.
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May 13, 2026
(Maybe no talk since short Ascension week)
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May 20, 2026
Speaker: Laxmi Briedjlal (Antwerpen)
Title: tba.
Abstract: tba.
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click here.
2025/26 --- 1st semester (autumn)
Usually Wednesdays 16:00 - 17:00h in M.G.004 or M.G.005
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Sept 24, 2025
No talk [first week of term]
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Oct 1, 2025
Speaker: Matteo Manenti (Antwerpen)
Title: Nijenhuis operators in dimensions 2 and 3: Towards a classification of gl-regular operators.
Abstract:
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Oct 8, 2025
Speaker: Edward Bryden (Antwerpen)
Title: Rademacher’s Theorem: The Metric-Measure Geometry Way.
Abstract:
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Oct 15, 2025
Speaker: Ronen Brilleslijper (VU Amsterdam)
Title: Generalizing symplectic topology from 1 to 2 dimensions.
Abstract:
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Oct 22, 2025
Speaker: Paul Kiefer (Antwerpen)
Title: Theta Functions and Locally Symmetric Spaces of Orthogonal Type.
Abstract:
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Oct 29, 2025
Speaker: Massimiliano Moda (Antwerpen)
Title: An Overview of Financial Modeling and Derivative Pricing.
Abstract:
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Nov 5, 2025
Speaker: Renato Huzak (Hasselt)
Title: Hilbert's 16th problem in regularized PWS systems.
Abstract:
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Nov 12, 2025 [in M.G.004]
No talk [half of the week are holidays]
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Nov 19, 2025 [in M.G.004]
Speaker: Zan Grad (KU Leuven)
Title: Multiplicative Ehresmann connections.
Abstract:
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Nov 26, 2025 [in M.G.004]
Speaker: Stijn Cambie (KU Leuven & Antwerpen)
Title: On the problems by Erdős.
Abstract:
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Dec 3, 2025 [in M.G.004]
Talk cancelled since speaker ill!
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Dec 10, 2025 [in M.G.004; 13-16h OC]
Speaker: Senne Ignoul (Antwerpen)
Title: Towards contact semitoric systems.
Abstract:
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Dec 17, 2025
No talk: of the in Brussels
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2024/25 --- 2nd semester (spring)
Usually Wednesdays 16:00 - 17:00h in M.G.004
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Feb 12, 2025 [DR]
no talk (first week of semester)
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MONDAY Feb 17, 2025 --- ATTENTION CHANGE OF DAY !!!
Speaker: Mark Peletier (TU Eindhoven)
Title: How GENERIC arises from upscaling a Hamiltonian system.
Abstract:
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Feb 26, 2025
Speaker: Marco Rampazzo (Antwerpen)
Title: Exceptional collections for algebraic varieties.
Abstract:
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March 5, 2025
Speaker: Urs Frauenfelder (Augsburg)
Title: Contacting the moon.
Abstract:
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March 12, 2025 [DR]
Speaker: Luka Zwaan (KU Leuven).
Title: Duistermaat-Heckman measures for Hamiltonian groupoid actions.
Abstract:
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March 19, 2025
Speaker: Andreas Vermeiren (KU Leuven)
Title: Totally geodesic submanifolds of homogeneous CP2n+1.
Abstract:
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March 26, 2025
no talk (Math Research Day of the Department of Mathematics).
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April 2, 2025
no talk
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April 9, 2025 [DR]
no talk (Easter break).
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April 16, 2025
no talk (Easter break).
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April 23, 2025
Speaker: Jose Torrente Teruel (Cordoba & Antwerpen)
Title: Reduction of unchanged direction trajectories in Galilean spacetimes.
Abstract:
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April 30, 2025 [Ƶ closed during May 1-3]
no talk.
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May 7, 2025 [DR]
Speaker: Louis Van Gaelen (Antwerpen)
Title: Flow category for homoclinic points.
Abstract: .
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May 14, 2025
Speaker: Lowie Rombouts (Antwerpen)
Title: Markov Processes: From Abstract Theory to Financial Applications.
Abstract:
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May 21, 2025
Speaker: Quentin Menet (Mons/Bergen)
Title: Weighted shifts in linear dynamics.
Abstract:
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May 28, 2025
no talk.
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June 4, 2025
Speaker: Jean Van Schaftingen (UC Louvain)
Title: Sobolev mappings between manifolds: when topology answers analytical questions in a geometrical context.
Abstract:
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2024/25 --- 1st semester (autumn)
Usually Wednesdays 16:00 - 17:00h, room M.G.004
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Sept 25, 2024
No talk [first week of term]
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Oct 02, 2024 --- ATTENTION: 14:00-15:00h in M.G.005 !!!
Speaker: Imke Verlinden (Antwerpen)
Title: Simplicity of Hecke C*-algebras.
Abstract:
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Oct 9, 2024
Speaker: Martijn Kluitenberg (Groningen)
Title: Cheeger's inequality in sub-Riemannian geometry.
Abstract:
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Oct 16, 2024
Speaker: Cristofaro Lorenzo (Luxembourg)
Title: An application of Fractional Operators in White Noise Analysis: Bernstein Gaussian Processes.
Abstract:
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Oct 23, 2024 --- ATTENTION: 14:00-15:00h in M.G.005 !!!
Speaker: Constant Huiszoon (Antwerpen)
Title: Spinning tops -- equations of motions
Abstract:
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Oct 30, 2024 [DR]
Speaker: Kenzo Yasaka (Antwerpen)
Title: Exterior differential systems on Lie algebroids.
Abstract:
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Nov 6, 2024
Speaker: Tobias Henriksen (Antwerpen & Groningen)
Title: Hamiltonian Hopf bifurcations in Gaudin models.
Abstract:
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Nov 13, 2024
Speaker: Matteo Manenti (Antwerpen)
Title: Polytopes and Toric Varieties: A brief introduction
Abstract:
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Nov 20, 2024 [DR]
Speaker: Hans Dierckx (Antwerpen & KU Leuven)
Title: Geometric principles in the theory of heart rhythm disorders.
Abstract:
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Nov 27, 2024
Speaker: Martin Roelfs (Antwerpen)
Title: Geometric Gauges: Plane and Simple.
Abstract:
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Dec 4, 2024 [OC meeting 13-16h]
Speaker: Miquel Cueca (KU Leuven)
Title: Symplectic geometry up to homotopy.
Abstract:
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Dec 11, 2024
Speaker: Mateo Anarella (KU Leuven).
Title: Homogeneous Lagrangian submanifolds of the nearly Kähler SL(2,R)×SL(2,R).
Abstract:
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Dec 18, 2024
No talk: of the in Brussels
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2023/24 --- 2nd semester (spring)
Usually Wednesdays 16:00 - 17:00h in M.G.004
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Feb 14, 2024 [DR]
no talk
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Feb 21, 2024
no talk
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Feb 28, 2024
no talk
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March 6, 2024
no talk
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March 13, 2024 [eDR]
Speaker: Maarten Mol (MPI Bonn)
Title: Kähler metrics and toric Lagrangian fibrations.
Abstract:
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March 20, 2024
no talk (Joaquim Brugues' public defense in Barcelona)
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MONDAY, March 25, 2024 (Attention! Different day but same time & room!)
Speaker: Marcello Seri (Groningen)
Title: Spectral geometry of sub-Riemannian manifolds.
Abstract:
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April 3, 2024
no talk (Easter holidays)
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April 10, 2024
no talk (Easter holidays)
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April 17, 2024
Speaker: Sonja Hohloch (Antwerpen)
Title: Homoclinic points and Floer homology
Abstract:
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April 24, 2024
Speaker: Joan Grandes Umbert (Antwerpen & UPC Barcelona)
Title: Geodesically equivalent metrics.
Aٰ:
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May 1, 2024
no talk (official holiday)
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May 8, 2024
no talk (Thursday + Friday holidays...)
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May 15, 2024 [DR]
Speaker: Edward Bryden (Antwerpen)
Title: Stability for a class of three tori with small negative scalar curvature.
Aٰ:
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May 22, 2024
Speaker: Andries Salm (ULB)
Title: Construction of gravitational instantons of type ALG* and ALH*.
Abstract:
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TUESDAY (!!!) June 11, 2024 BETWEEN 13:00-14:00 in M.G.005 !!!
Speaker: Pedro Santos
Title: Polytope invariant for Hypersemitoric Systems and beyond.
Abstract:
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June 19, 2024 [DR] (M.G.004 as usual)
Speaker: Angel Alejandro Garcia Chung (Monterrey)
Title: Modeling the chemical space with (chemical) hypergraph.
Abstract:
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2023/24 --- 1st semester (autumn)
Usually Wednesdays 16:00 - 17:00h, room M.G.004
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Sept 27, 2023
Speaker: Dustin Connery-Grigg (Sorbonne)
Title: Floer theory and symplectic dynamics.
Abstract:
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Oct 04, 2023
Speaker: Pierre Bieliavsky (UC Louvain)
Title: Symmetric spaces and quantization.
Abstract:
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Oct 11, 2023 [DR], ATTENTION: starts at 17:00h !!!
Speaker: Aldo Witte (Antwerpen)
Title: Jets of foliations
Abstract:
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Oct 18, 2023
Speaker: Pedro Santos (Antwerpen)
Title: (Non)-Displaceability of fibers of semitoric systems.
Abstract:
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Oct 25, 2023
no talk
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Nov 1, 2023
no talk (holiday)
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Nov 8, 2023 [DR]
no talk
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Nov 15, 2023
Speaker: Federico Zadra (Groningen)
Title: Numerical and analytical aspects of contact Hamiltonian systems.
Abstract:
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Nov 22, 2023
Speaker: Francesco Morabito (Ecole Polytechnique Paris)
Title: Hofer Norms on Braid Groups and Quantitative Heegaard-Floer Homology.
Abstract:
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Nov 29, 2023 [DR], ATTENTION: starts at 17:00h !!!
Speaker: Karl Grosse-Erdmann (Mons)
Title: How chaotic is differentiation?
Abstract:
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Dec 6, 2023
Speaker: Joaquim Brugués (Antwerpen & UPC Barcelona)
Title: Floer homology for b-symplectic manifolds.
Abstract:
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Dec 13, 2023
Speaker: Jonas Deré (KU Leuven)
Title: Ricci negative solvmanifolds and their nilradicals.
Abstract:
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Dec 20, 2023
No talk: at VUB.
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2022/23 --- 2nd semester (spring)
Usually Wednesdays 16:00 - 17:00h.
ATTENTION: The talks will take place either in M.G.004 or ONLINE via ZOOM plus/minus live stream in M.G.004. The precise modalities will be announced/posted for each talk individually.
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Feb 15, 2023
no talk
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Feb 22, 2023
Speaker: Maxime Fairon (Paris-Saclay)
Title: A new real form of the spin Ruijsenaars-Schneider system
Abstract:
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March 1, 2023 [Talent Forum]
no talk [overlap with the Talent Forum for Ba/Ma students and a doctoral school event mandatory for starting PhD students].
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March 8, 2023 [DR]
Speaker: Constant Huiszoon (Antwerpen)
Title: Existence of an invariant Riemann surface through a zero of a holomorphic vector field.
Abstract:
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March 15, 2023
No talk due to overlap with the Math Research Day of the Department of Mathematics of the University of Antwerp where everybody is encouraged to join.
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March 22, 2023
Speaker: Malika Belrhazi (Antwerpen)
Title: The linear connection approach to Chaplygin nonholonomic systems.
Abstract:
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March 29, 2023
No talk due to overlap with the following events where everybody is encouraged to participate:
1)
2)
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April 5, 2023
no talk (Easter holidays)
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April 12, 2023 [DR]
no talk (Easter holidays)
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April 19, 2023 [Fiesta Mundial]: ATTENTION !!! 2 talks !!!
1st speaker (16:00 - 17:00h): Tobias Henriksen (Groningen)
Title: Symplectic homology and shape of cotangent bundles.
Abstract:
2nd speaker (17:00 - 18:00): Nikolay Martynchuk (Groningen)
Title: Scattering in the A2 singularity
Abstract:
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April 26, 2023: ATTENTION !!! 2 talks !!!
1st speaker (16:00 - 17:00h): Renata Turkes (Antwerpen)
Title: What is ... Topological Data Analysis?
Abstract:
2nd speaker (17:00 - 18:00): Kenzo Yasaka (Antwerpen)
Title: Exterior differential systems and local solvability.
Abstract:
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May 3, 2023
Speaker: Pau Mir (UPC Barcelona)
Title: Construction of b-semitoric systems.
Abstract:
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May 10, 2023 [DR]
Speaker: Edward Bryden (Antwerp)
Title: The Stability of Llarull’s Theorem in three dimensions.
Abstract:
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May 17, 2023 [UA May 18-20 closed: Ascension Day]
no talk.
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May 24, 2023
Speaker: Naomi Flamand (Antwerpen)
Title: Hirzebruch systems and swallowtails.
Abstract:
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May 31, 2023
Speaker: Jean Gutt (Toulouse)
Title: Transverse Dolbeault Cohomology
Abstract:
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2022/23 --- 1st semester (autumn)
Usually Wednesdays 16:00 - 17:00h.
ATTENTION: Depending on the state of the art of the corona measures and the preference of the speaker, the talks will take place either in M.G.004 or ONLINE via ZOOM plus/minus live stream in M.G.004. The precise modalities will be announced/posted for each talk individually.
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Sept 28, 2022
no talk.
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Oct 05, 2022 [DR]
no talk.
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Oct 12, 2022
Speaker: Kenzo Yasaka (Antwerpen)
Title: The solutions and monodromy of the irregular Knizhnik–Zamolodchikov equations.
Abstract:
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Oct 19, 2022
Speaker: Pedro Santos (Antwerpen)
Title: Lagrangian Floer homology of cotangent bundles.
Abstract:
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Oct 26, 2022 [DR] --- Attention: talk starts at 17:00h !!!
Speaker: Tom Mestdag (Antwerpen)
Title: The inverse problem of Lagrangian mechanics.
Abstract:
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Nov 02, 2022
no talk (holiday).
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Nov 09, 2022
Speaker: Fabian Ziltener (Utrecht)
Title: Capacities as a complete symplectic invariant.
Abstract:
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Nov 16, 2022
Speaker: Thomas Rot (VU Amsterdam)
Title: Proper homotopy classes of Fredholm mappings.
Abstract:
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Nov 23, 2022
Speaker: Ignacio Barros (Antwerpen)
Title: Birational classification of moduli spaces.
Abstract:
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Nov 30, 2022 [DR] --- Attention: talk starts at 17:00h (!!!) and is zoom streamed in M.G.004.
Speaker: Emily Schaal (Stony Brook)
Title: The Penrose Inequality in Spherical Symmetry.
Abstract:
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Dec 07, 2022 --- Attention: talk is zoom streamed in M.G.004.
Speaker: Carla Cederbaum (Tübingen)
Title: The center of mass of an isolated relativistic system and its motion.
Abstract:
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Dec 14, 2022
Speaker: Marco Usula (ULB)
Title: 0-elliptic boundary value problems and applications.
Abstract:
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Dec 21, 2022
Speaker: Andriy Haydys (ULB)
Title: On Z/2 harmonic spinors and forms in dimension three.
Abstract:
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2021/22 --- 2nd semester (spring)
Usually Wednesdays 16:00 - 17:00h.
ATTENTION: Depending on the state of the art of the corona measures and the preference of the speaker, the talks will take place either in M.G.005 or ONLINE via ZOOM plus/minus live stream in M.G.005. The precise modalities will be announced/posted for each talk individually.
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Feb 16, 2022
no talk
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Feb 23, 2022 --- ONLINE via ZOOM with live stream in M.G.005.
[parallel with UA talent forum]
Speaker: Duvan Cardona (Gent)
Title: On the Wodzicki residue on compact Lie groups and the paradigm of the global quantisation.
Abstract:
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March 2, 2022 --- ONLINE via ZOOM with live stream in M.G.005.
Speaker: Maria Amelia Salazar (Universidade Federal Fluminense, Brazil)
Title: Cohomology and characteristic classes in Lie theory.
Abstract:
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March 9, 2022 [DR] --- on campus only in M.G.005!!!
Speaker: Güner Muarem (Antwerpen)
Title: A new Fischer decomposition for symplectic spinor-valued polynomials and branching rules.
Abstract:
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March 16, 2022: ATTENTION: Different start time & venue!
Where: on campus in M.G.010 and ONLINE via Zoom.
When: 14:00 -- 15:00h
What: Public PhD Defense (which is part of the
2-day miniworkshop "From toric to hyperbolic").
Speaker: Yannick Gullentops (Antwerpen)
Title: Hyperbolic singularities in the presence of
S^1-actions and Hamiltonian PDEs.
Abstract:
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March 23, 2022
no talk
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March 30, 2022 [DR] --- on campus only in M.G.005!!!
Speaker: Senne Ignoul (Antwerpen)
Title: Classification of compact connected contact toric G-manifolds.
Abstract:
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April 6, 2022
no talk (Easter holidays)
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April 13, 2022
no talk (Easter holidays)
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April 20, 2022 [UA: Fiesta Mundial] --- on campus only in M.G.005!!!
Speaker: Joaquim Brugués (Ƶ & UPC Barcelona)
Title: Towards a Poincaré-Hopf theorem for b-tangent bundles.
Abstract:
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April 27, 2022 --- on campus only in M.G.005
Speaker: David Martín de Diego (ICMAT, Madrid)
Title: A parallel iterative method for variational integration.
Abstract:
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May 4, 2022 [DR]
no talk
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May 11, 2022 --- ATTENTION: between 17-18h online via ZOOM & streamed in M.G.005
Speaker: Brian Allen (University of Hartford)
Title: Sobolev Theory for Riemannian Manifolds.
Abstract:
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May 18, 2022 --- ATTENTION: between 14-15h on campus only in M.G.005
Speaker: Malika Belrhazi (Antwerpen)
Title: Lagrangian systems with nonholonomic constraints.
Abstract:
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May 25, 2022
no talk
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2021/22 --- 1st semester (autumn)
Usually Wednesdays 16:00 - 17:00h.
ATTENTION: Depending on the state of the art of the corona measures, the talks will take place either in M.G.004 or ONLINE via ZOOM. It will be announced/posted for each talk individually.
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Sept 29, 2021
no talk
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Oct 6, 2021 [DR], in M.G.004 ON CAMPUS !
Speaker: Sandor Hajdu (Antwerpen)
Title: Nonlinear splittings on fibre bundles.
Abstract:
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Oct 13, 2021 via ZOOM, but all locals may listen to it in M.G.004
Speaker: Francesco Fassò (Padova)
Title: Geometry of Hamiltonian superintegrable systems.
Abstract:
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Oct 20, 2021 via ZOOM, but all locals may listen to it in M.G.004
Speaker: Marcello Seri (Groningen)
Title: Contact mechanics and numerical integration.
Abstract:
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Oct 27, 2021 [DR] at 16:30h (!!!) in M.G.004 ON CAMPUS!
Speaker: Jaume Alonso (TU Berlin)
Title: Integrable discretisations of the Euler top and the Zhukovski-Volterra gyrostat
Abstract:
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Nov 3, 2021
no talk
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Nov 10, 2021
no talk
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Nov 17, 2021
Speaker: Aldo Witte (KU Leuven)
Title: Self-crossing boundary Lefschetz fibrations.
Abstract:
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Nov 24, 2021
Speaker: Edward Bryden (Tübingen)
Title: The area-angular momentum-charge inequality for black holes with positive cosmological constant.
Abstract:
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Dec 1, 2021 [DR]
no talk
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Dec 8, 2021: ONLINE via ZOOM
Speaker: Charlotte Kirchhoff-Lukat (MIT)
Title: Combinatorial Floer theory for orientable log symplectic surfaces.
Abstract:
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Dec 15, 2021 [OC]: at 17:30h (!!!) ONLINE via ZOOM
S: Marta Farre Puiggali (Antwerpen)
Title: Nonholonomic systems and the inverse problem
Abstract:
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Dec 22, 2021 ONLINE via ZOOM
Speaker: Masoud Ahookhosh (Antwerpen)
Title: Convergence Analysis of Non-Euclidean Methods for Nonsmooth Nonconvex Optimization.
Abstract:
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2020/21 --- 2nd semester (spring)
Usually Wednesdays 16:00 - 17:00h.
ATTENTION: Until further notice, the seminar will take place ONLINE via Microsoft Teams to comply with the strengthened anti-corona measures of the University of Antwerp.
[The usual seminar room M.G.005 has a capacity for 24 people in "corona code (dark) orange" and for more people in "code yellow" or "code green". Since the number of seminar attendants usually varies around 10 people, seminar meetings are conform with the anti-corona measures of the University of Antwerpen pending additional measures. During "code red" or worse, the seminar takes place online via Microsoft Teams.]
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Feb 10, 2021 [DR] [OC?]
No talk (first week of term heavy on administrative meetings...)
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Feb 17, 2021
Natalyia Balabanova (Manchester)
Titel: Vortex dynamics on non-orientable manifolds.
Abstract:
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Feb 24, 2021
Alexey Bolsinov (Loughborough University)
Titel: Nijenhuis Geometry
Abstract:
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March 3, 2021
Alexey Bolsinov (Loughborough University)
Titel: On symplectic invariants of integrable Hamiltonian systems.
Abstract:
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March 10, 2021 [DR]
Peter De Maesschalck (Hasselt)
Titel: Smale's problem on limit cycles.
Abstract:
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March 17, 2021: DOUBLE EVENT
1. Speaker (16-17h): Eva Miranda (UPC Barcelona)
Titel: Singular Floer theory and singular Hamiltonian/Reeb Dynamics: First steps (PART I).
Abstract:
2. Speaker (17-18h): Joaquim Brugués (UPC Barcelona & Antwerpen)
Titel: Singular Floer theory and singular Hamiltonian/Reeb Dynamics: First steps (PART II).
Abstract:
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March 24, 2021
Philipp Reiter (TU Chemnitz)
Titel: A bending‐twist model for inextensible curves.
Abstract:
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March 31, 2021 [eDR] - ATTENTION: STARTS EXCEPTIONALLY at 14:30h !!!
Nikolay Martynchuk (Moscow Center for Fundamental and Applied Mathematics)
Titel: On symplectic invariants of integrable Hamiltonian systems in the smooth category.
Abstract:
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April 21, 2021
No talk due to the Mathematics Research Day of the Department of Mathematics of the University of Antwerp.
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April 28, 2021
Bas Janssens (TU Delft)
Titel: Positive energy representations of gauge groups on conformally compactified Minkowski space.
Abstract:
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May 5, 2021 [DR]
--- ATTENTION: TALK STARTS AT 16:30h !!! ---
Bruno Premoselli (ULB)
Titel: Negatively curved Einstein metrics on quotients of 4-dimensional hyperbolic manifolds.
Abstract:
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May 12, 2021
Online Miniworkshop on contact and symplectic dynamics
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May 19, 2021
(no talk)
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2020/21 --- 1st semester (autumn)
Usually Wednesdays 16:00 - 17:00h -- now ONLINE instead of in room M.G.005!
ATTENTION: Starting Oct 28, 2020, the seminar will take place ONLINE via Microsoft Teams to comply with the strengthened anti-corona measures of the University of Antwerp.
[The seminar room M.G.005 has a capacity for 24 people in "corona code (dark) orange" and for more people in "code yellow" or "code green". Since the number of seminar attendants usually varies around 10 people, seminar meetings are conform with the anti-corona measures of the University of Antwerpen pending additional measures. Moreover, this term we will focus on talks by local speakers in order to minimize traveling.]
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Sept 23, 2020 [OC]
no talk since OC-meeting in the afternoon.
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Sept 30, 2020
Marine Fontaine (University of Antwerp)
Title: Real forms and Hamiltonian dynamics.
Abstract:
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Oct 7, 2020 [DR]
Sándor Hajdú (University of Antwerp)
Title: Jacobi fields and conjugate points for a projective class of sprays.
Abstract:
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Oct 14, 2020
Marcelo Alves (ULB & University of Antwerp)
Title: C0-Entropy Stability for Geodesic Flows on the 2-dimensional Torus.
Abstract:
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Oct 21, 2020
Sonja Hohloch (University of Antwerp)
Title: Towards `hypersemitoric' systems.
Abstract:
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Oct 28, 2020
Marta Farré Puiggalí (University of Antwerp)
Title: Inverse problem and control.
Abstract:
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Nov 4, 2020 [DR]
Tom Mestdag (University of Antwerp)
Title: Reduction, reconstruction and un-reduction of dynamical systems with symmetries.
Abstract:
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Nov 11, 2020
no talk (holiday)
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Nov 18, 2020
Güner Muarem (University of Antwerp)
Title: An “orthogonalized” symplectic Dirac operator and branching procedures.
Abstract:
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Nov 25, 2020
Yannick Gullentops (University of Antwerp)
Title: Hyperbolic-regular fibers.
Abstract:
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Dec 2, 2020 [DR]
Wouter Van den Haute (University of Antwerp)
Title: Normality in terms of distances, contractions, and extensions of functions.
Abstract:
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Dec 9, 2020
Tim Verdonck (University of Antwerp)
Title: Anomaly detection using robust statistics.
Abstract:
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Dec 16, 2020 [OC]
no talk (originally OC meeting in the afternoon).
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2019/20 --- 2nd semester (spring)
Usually Wednesdays 16:00 - 17:00h in M.G.005
Feb 12, 2020 [DR]:
no talk.
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Feb 19, 2020:
Güner Muarem (Antwerpen)
Title: Towards point vortex dynamics on the Wallach space W^6 and further generalizations.
Abstract:
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Feb 26, 2020:
Ramón Vera (KU Leuven)
Title: Geometry of near-symplectic forms.
Abstract:
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March 4, 2020: TWO TALKS!
16-17h: Toshihiro Iwai (Kyoto University)
Title: Bulk-edge correspondence for the Dirac oscillator on the two-torus as a magnetic unit cell.
Abstract:
17-18h: Daisuke Tarama (Ritsumeikan University)
Title: Geometry and analysis for the Kirchhoff equations under the Clebsch condtion.
Abstract:
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March 11, 2020 [DR]:
Jeffrey Cornelis (Antwerpen)
Title: Automatic regularization of ill-conditioned linear systems.
Abstract:
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March 18, 2020:
no talk due to "corona shutdown":
Originally planned talk by Peter De Maesschalck (Hasselt) postponed until further notice!
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March 25, 2020:
no talk due to "corona shutdown".
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April 1, 2020:
no talk due to "corona shutdown":
Originally planned talk by Douglas Schultz (HU Berlin) postponed until further notice!
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April 22, 2020:
no talk due to "corona shutdown":
Originally planned talk by Guido Carlet (Institut de Mathématiques de Bourgogne, Dijon) postponed until further notice!
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April 29, 2020 [DR]:
no talk due to "corona shutdown".
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May 6, 2020:
no talk due to "corona shutdown":
Originally planned talk by Tim Verdonck (Antwerpen) postponed until further notice!
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May 13, 2020:
no talk due to "corona shutdown":
Originally planned talk by Bas Janssens (TU Delft) postponed until further notice!
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May 20, 2020:
no talk due to "corona shutdown".
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2019/20 --- 1st semester (autumn)
Usually Wednesdays 16:00 - 17:00h in M.G.005
Sept 25, 2019:
Sándor Hajdú (Antwerpen)
Title: Jacobi fields and conjugate points for second-order differential equations.
Abstract:
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Oct 2, 2019:
Boris Zhilinskií (Université du Littoral)
Title: Energy band rearrangements for finite-particle quantum systems: Symmetry and topology aspects.
Abstract:
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Oct 9, 2019 [DW]:
Joseph Palmer (Antwerpen)
Title: Integrable systems and S^1 actions.
Abstract:
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Oct 16, 2019:
Yannick Herfray (ULB)
Title: An ambient approach to conformal geodesics.
Abstract:
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Oct 23, 2019:
Marcelo Alves (ULB)
Title: Flat knots and forcing of topological entropy for Reeb flows.
Abstract:
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Oct 30, 2019:
Johan van de Leur (Utrecht)
Title: On polynomial tau-functions of KP and KdV type hierarchies.
Abstract:
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Nov 6, 2019:
Joel Villatoro (KU Leuven)
Title: Holonomy for Singular Foliations.
Abstract:
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Nov 13, 2019 [DW]:
Tobias Diez (TU Delft)
Title: Singular symplectic cotangent bundle reduction in infinite dimensions.
Abstract:
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Nov 20, 2019:
Wim Vanroose (Antwerpen)
Title: Iterative methods for the Helmholtz equation.
Abstract:
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Nov 27, 2019 [DW]:
Sjors Heefer (TU Eindhoven)
Title: Finsler Gravity.
Abstract:
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Dec 4, 2019:
Yannick Gullentops (Antwerpen)
Title: Symplectic scale manifolds and the Cauchy-Riemann-Fueter equation.
Abstract:
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Dec 11, 2019 [OC]:
no talk (OC!)
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Dec 18, 2019:
no talk (people travelling)
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2018/19 --- 2nd semester (spring)
Usually Wednesdays 16:00 - 17:00h in M.G.005
Feb 13, 2019
Güner Muarem (Antwerpen)
Title: Symmetries of differential operators and the Fueter theorem.
Abstract:
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Feb 20, 2019
Siegfried Cools (Antwerpen)
Title: Analyzing and Improving Attainable Accuracy for the Communication Hiding Pipelined Conjugate Gradient Method.
Abstract:
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Feb 27, 2019
no talk (replaced by double talk on April 24)
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March 6, 2019 [OC]
Charlotte Kirchhoff-Lukat (KU Leuven)
Title: Stable generalized complex geometry, blow-up and Lagrangian submanifolds.
Abstract:
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March 13, 2019 [DWIN], ATTENTION: 15:30 - 16:30 !!!
Sonja Hohloch (Antwerpen)
Title: Optimal transport, integer partitions, and integrable systems.
Abstract:
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March 20, 2019
Philip Arathoon (University of Manchester)
Title: Singular reduction of the 2-body problem on the 3-sphere and the 4-dimensional Lagrange top.
Abstract:
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March 27, 2019
David Eelbode (Antwerpen)
Title: Howe duality for the orthogonal and spin group.
Abstract:
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April 3, 2019 [DWIN]
Annelies De Meulenaere (Antwerpen)
Title: A semitoric transition family with four transition points.
Abstract:
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April 24, 2019, ATTENTION: 2 TALKS !
Mahouton Norbert Hounkonnou (University of Abomey-Calavi)
a) 16:00 - 16:45: Colloquium style talk
Title: Generalized deformed quantum differential calculus and integration.
Abstract:
b) 17:00 - 18:00h: Standard seminar talk
Title: Quasi-bi-Hamiltonian stuctures for the Kepler Problem in a deformed phase space.
Abstract:
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May 1, 2019
(no talk: holiday)
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May 8, 2019 [DWIN]
(no talk: many people travelling)
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May 15, 2019
Carolin Kreisbeck (Utrecht)
Title: Asymptotic rigidity of layered structures and its applications in homogenization theory.
Abstract:
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May 22, 2019
Oliver Fabert (VU Amsterdam)
Title: On the small divisor problem in infinite-dimensional Floer theory.
Abstract:
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June 25, 2019, ATTENTION: different time & location!
TUESDAY between 14:00 - 15:00h in M.G.006!
Joaquim Brugués (UPC Barcelona)
Title: An introduction to b-symplectic geometry.
Abstract:
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Juli 8, 2019, ATTENTION: different day & time!
MONDAY between 15:00 - 16:00h in M.G.005
San Vũ Ngǫc (Université Rennes 1)
Title: Quantum footprints of Liouville integrable systems.
Abstract:
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August 28, 2019, ATTENTION: different time & location!
Wednesday between 14:00 - 15:00h in M.G.004
Yasushi Homma (Waseda University)
Title: Toward spin 3/2 geometry.
Abstract:
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2018/19 --- 1st semester (autumn)
Usually Wednesdays 16:00 - 17:00h in M.G.005
Sept 26, 2018:
no talk (OC-vergadering in the afternoon).
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Oct 3, 2018:
Marine Fontaine (Antwerpen)
Title: Lyusternik-Schnirelmann category and Localization Formula.
Abstract:
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Oct 10, 2018:
Jan Naudts (Antwerpen)
Title: Non-Commutative Information Geometry.
Abstract:
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Oct 17, 2018:
Álvaro del Pino Gomez (Utrecht)
Title: Wrinkled embeddings and horizontal submanifolds.
Abstract:
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Oct 24, 2018:
Reinier Storm (KU Leuven)
Title: Structure theory of naturally reductive spaces.
Abstract:
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Oct 31, 2018:
no talk (Thursday and Friday are holidays).
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Nov 7, 2018:
no talk (got replaced by the "minicourse event" in Antwerpen on Nov 23).
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Nov 14, 2018:
Rob Vandervorst (VU Amsterdam)
Title: Dynamics and braiding.
Abstract:
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Nov 21, 2018:
Sándor Hajdú (Antwerpen)
Title: Geodesic Lemmas.
Abstract:
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Nov 28, 2018:
Ralph Klaasse (ULB)
Title: Poisson structures of divisor-type and symplectic Lie algebroids.
Abstract:
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Dec 5, 2018:
Yohan Le Floch (Strasbourg)
Title: Semitoric families.
Abstract:
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Dec 12, 2018:
Tom Mestdag (Antwerpen)
Title: The inverse problem of the calculus of variations.
Abstract:
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Dec 19, 2018:
no talk (got replaced by the mini-courses event at the ULB on Nov 29)
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Jan 28, 2019 (MONDAY, 14-15h in M.G.005)
Tudor Ratiu (Shanghai Jiao Tong University & EPF Lausanne)
Title: Momentum maps with values in differential character groups.
Abstract:
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2017/18 --- 2nd semester (spring)
Usually Mondays 16:00 - 17:00h in M.G.005
Feb 12, 2018:
Kenny De Commer (VUB)
Title: Knizhnik-Zamolodchikov differential equations, braid group representations and quantum groups.
Abstract:
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Feb 19, 2018:
Benoît Legat (UC Louvain)
Title: Optimal stabilization of constrained switched systems and application to co-simulation.
Abstract:
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Feb 26, 2018:
Eduardo Garcia-Torano Andres (Universidad Nacional del Sur, Argentinia)
Title: Routh reduction for Lagrangian field theories.
Abstract:
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Mar 5, 2018:
TALK MOVED TO MAY 14 !!!
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Mar 12, 2018: EXCEPTIONALLY IN M.G.006!!!
Cédric Oms (UPC Barcelona)
Title: Singular contact manifolds.
Abstract:
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Mar 19, 2018:
Tim Janssens (Antwerpen)
Title: Special functions in higher spin setting.
Abstract:
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Mar 26, 2018:
Karel In't Hout (Antwerpen)
Title: ADI methods for the numerical solution of multi-dimensional partial differential equations in finance.
Abstract:
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April 16, 2018:
Joeri Van der Veken (KU Leuven)
Title: Lagrangian submanifolds of the complex quadric.
Abstract:
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April 23, 2018:
Konstantinos Efstathiou (Groningen)
Title: Monodromy and circle actions.
Abstract:
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April 30, 2018:
No talk since part of the audience is travelling.
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May 7, 2018:
Jaume Alonso Fernández (Antwerpen)
Title: Persistent homology and its applications to symplectic topology.
Abstract:
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May 14, 2018: EXCEPTIONALLY 2 SPEAKERS !!!
1) Güner Muarem (Antwerpen): 16-17h
Title: Peter-Weyl’s theorem as a bridge between representation theory and harmonical analysis.
Abstract:
2) Martins Bruveris (Brunel University, London): 17-18h
Title: Soliton solutions for the elastic metric on spaces of curves.
Abstract:
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August 21, 2018:
EXCEPTIONALLY on TUESDAY at 14-15h in M.G.005 !!!
Joseph Palmer (Rutgers University)
Title: Families of semitoric systems.
Abstract:
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August 28, 2018:
EXCEPTIONALLY on TUESDAY at 14-15h in M.G.005 !!!
Joseph Palmer (Rutgers University)
Title: Immersed Floer cohomolgy and reverse mean curvature flow.
Abstract:
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September 19, 2018:
EXCEPTIONALLY on WEDNESDAY 13:30-14:30h in M.G.005 !!!
Holger Dullin (University of Sydney)
Title: Symplectic reduction of the 3-body problem in 4-dimensional space.
Abstract:
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2017/18 --- 1st semester (autumn)
Usually Tuesdays 14:00 - 15:00h in M.G.006
Sept 26, 2017
No talk.
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Oct 3, 2017
Jan Van Casteren (Antwerpen)
Title: On Feller semigroups, Markov processes, and their generators.
Abstract:
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Oct 10, 2017
Sonja Hohloch (Antwerpen)
Title: Semitoric systems with two focus-focus singularities.
Abstract:
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Oct 17, 2017
Nick Schenkels (Antwerpen)
Title: Introduction to regularization methods for inverse problems.
Abstract:
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Oct 24, 2017
François Gay-Balmaz (CNRS, LMD-ENS Paris)
Title: A Lagrangian variational formulation for nonequilibrium thermodynamics.
Abstract:
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Oct 31, 2017
no talk (Wednesday, Thursday, Friday in this week are holidays...)
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Nov 7, 2017
David Saunders (University of Ostrava)
Title: Lagrangians with reduced-order Euler Lagrange equations.
Abstract:
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Nov 14, 2017
Heinz Hanßmann (Utrecht)
Title: Hamiltonian oscillators in 1 : ± 2 : ± 4 resonance.
Abstract:
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Nov 21, 2017
Simone Gutt (ULB)
Title: How to select almost complex structures in a symplectic framework.
Abstract:
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Nov 28, 2017
Ori Yudilevich (KU Leuven)
Title: A Modern Approach to Élie Cartan's Structure Theory for Lie Pseudogroups.
Abstract: .
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Dec 5, 2017
Melanie Bertelson (ULB)
Title: Is there such a thing as Piecewise Linear symplectic geometry?
Abstract: The answer to the above-raised question is as yet unclear. Our explorations of the reasons why will be described in the talk. This is a joint work with Julie Distexhe and Yasha Eliashberg.
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Dec 12, 2017
Yannick Gullentops (Antwerpen)
Title: Symplectic geometry on Hilbert scales.
Abstract:
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Dec 19, 2017
Marilena Moruz (KU Leuven)
Title: Lagrangian submanifolds of the Nearly Kaehler S^3 x S^3 from minimal surfaces in S^3.
Abstract:
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2016/17 --- 2nd semester (spring)
Usually 14:15 - 15:15h in M.G.005
Feb 14, 2017:
Eduardo Garcı́a-Toraño Andrés (Universidad Nacional del Sur, Argentina)
Title: Dirac structures and Port-Hamiltonian systems.
Abstract:
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Feb 21, 2017:
Martins Bruveris (Brunel University London)
Title: Riemannian Metrics on Shape Spaces -- Theory and Applications.
Abstract:
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Feb 28, 2017:
Michiel Wouters (Antwerpen)
Title: Newton's method and Numerical continuation: Application to the Ginzburg-Landau model of superconductivity.
Abstract:
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March 7, 2017:
Marco Zambon (KU Leuven)
Title: Deformations of presymplectic forms.
Abstract:
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March 14, 2017:
Fabian Ziltener (Utrecht)
Title: Coisotropic submanifolds of symplectic manifolds and leafwise fixed points.
Abstract:
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March 21, 2017:
NO TALK, since the speaker got ill. The talk will be rescheduled in April/May.
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March 28, 2017:
Sonja Hohloch (Antwerpen)
Title: Floer homology for homoclinic points.
Abstract:
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April 18, 2017:
Tom Mestdag (Antwerpen)
Title: Reduction and un-reduction by symmetries for systems of second-order differential equations.
Abstract:
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April 25, 2017:
Bob Lowen (Antwerpen)
Title: Approach theory: an overview.
Abstract:
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May 2, 2017:
Ben Berckmoes (Antwerpen)
Title: Approach theory, normal approximation, and the Wasserstein metric.
Abstract:
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May 9, 2017:
no talk.
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May 16, 2017:
Jaume Alonso Fernandez (Antwerpen)
Title: The Taylor series symplectic invariant of semi-toric integrable systems.
Abstract:
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May 23, 2017:
Tim Janssens (Antwerpen)
Title: Gegenbauer polynomials in higher spin Clifford analysis.
Abstract:
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2016/17 --- 1st semester (autumn)
Usually 14:45 - 15:45h in M.G.005
Oct 6, 2016:Oliver Fabert (VU Amsterdam) Title: The Arnold conjecture in infinite dimensions. Abstract: |
Oct 13, 2016:Tom Mestdag (Antwerpen) Title: Symmetry reduction, Finsler geometry and Maupertuis’ principle. Abstract: |
Oct 20, 2016:Sonja Hohloch (Antwerpen) Title: Floer homology in finite and infinite dimensions. Abstract: |
Oct 27, 2016:Matthias Roels (Antwerpen) Title: A Transvector algebra framework for Stein-Weiss gradients. Abstract: |
Nov 3, 2016:No talk. (In this week, Monday through Wednesday are holidays). |
Nov 10, 2016:Roman Golovko (ULB) Title: On the stable Arnold conjecture. Abstract: |
Nov 17, 2016:Philipp Reiter (Essen-Duisburg & Heidelberg) Title: The elastic trefoil is the twice covered circle Abstract: |
Nov 24, 2016:Ben Berckmoes (Antwerpen) Title: Statistical inference with contaminated data and Stein's method. Abstract: |
Dec 1, 2016:Tim Janssens (Antwerpen) Title: On a higher spin generalisation of the Fueter Abstract: |
Dec 8, 2016:Jaume Alonso Fernandez (Antwerpen) Title: Focus-focus singularities in semi-toric integrable Hamiltonian systems. Abstract: |
Dec 15, 2016:no talk. Title: --- Abstract: --- |
Dec 22, 2016:Jean Gutt (University of Georgia at Athens) Title: A cuplength estimate for the minimal number of periodic Reeb orbits. Abstract: ------------------------------------------------------------ Tuesday, Feb 7, 2017 at 14:15h in M.G.006Rutger-Jan Lange (Erasmus University Rotterdam) Titel: Optimal stopping of Feller processes at random Poisson times. Abstract: |