Departement Mathematik

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Frühjahrssemester 2025

Datum / Zeit Referent:in Titel Ort
18. Februar 2025
15:15-16:15 		Dr. Marco Badran
ETH Zurich, Switzerland
Details

Analysis Seminar

Titel Harmonic maps to the circle with higher dimensional singular set
Referent:in, Affiliation Dr. Marco Badran, ETH Zurich, Switzerland
Datum, Zeit 18. Februar 2025, 15:15-16:15
Ort HG G 43
Abstract We consider the problem of finding harmonic maps to the circle with a prescribed singular set in an arbitrary Riemannian manifold and characterise their uniqueness in terms of the "one-dimensional topology" of the ambient space. We then show how these maps can be used to define new notions of (n-2)-volume, leading to a promising approximation scheme for classical codimension 2 minimal surfaces.
Harmonic maps to the circle with higher dimensional singular setread_more
HG G 43
25. Februar 2025
15:15-16:15 		Dr. Shrish Parmeshwar
CY Cergy Paris Université
Details

Analysis Seminar

Titel Global-in-time Vortex Configurations for the 2D Euler Equations
Referent:in, Affiliation Dr. Shrish Parmeshwar, CY Cergy Paris Université
Datum, Zeit 25. Februar 2025, 15:15-16:15
Ort HG G 43
Abstract A long-standing topic of interest is to understand the desingularization problem in vortex dynamics for the incompressible 2D Euler equations: solutions of the system that approximate point vortices in the sense that the vorticity of the solution stays highly concentrated around a finite number of points on some interval of time. There are a large class of steady states that satisfy this behaviour, and also solutions that exhibit this behaviour dynamically on finite time intervals. We exhibit a solution of 2D Euler that is genuinely dynamic, and also retains this concentration of vorticity around points for all time: a configuration approximating two vortex pairs separating at a linear rate.
Global-in-time Vortex Configurations for the 2D Euler Equationsread_more
HG G 43
4. März 2025
15:15-16:15 		Dr. Mitchell Taylor
ETH Zurich, Switzerland
Details

Analysis Seminar

Titel Stable phase retrieval in function spaces
Referent:in, Affiliation Dr. Mitchell Taylor, ETH Zurich, Switzerland
Datum, Zeit 4. März 2025, 15:15-16:15
Ort HG G 43
Abstract A subspace $E \subset L2(\mu)$ is said to do stable phase retrieval (SPR) if there exists a constant $C \geq 1$ such that for any $f,g \in E$ we have $\inf_{|| \lambda || =1} || f- \lambda g || \leq C || |f| - |g| ||$ In this case, if |f| is known, then f is uniquely determined up to an unavoidable global phase factor $\lambda$ moreover, the phase recovery map is C-Lipschitz. Phase retrieval appears in several applied circumstances, ranging from crystallography to quantum mechanics. In this talk, I will present some elementary examples of subspaces of L2(µ) which do stable phase retrieval and discuss the structure of this class of subspaces. The material in this talk is based on joint work with M. Christ and B. Pineau as well as with D. Freeman, T. Oikhberg and B. Pineau.
Stable phase retrieval in function spacesread_more
HG G 43
11. März 2025
15:15-16:15 		Marco Inversi
Universität Basel
Details

Analysis Seminar

Titel Title T.B.A.
Referent:in, Affiliation Marco Inversi , Universität Basel
Datum, Zeit 11. März 2025, 15:15-16:15
Ort HG G 43
Title T.B.A.
HG G 43
18. März 2025
15:15-16:15 		Dr. Ahmed Bou-Rabee
Courant Institute
Details

Analysis Seminar

Titel Title T.B.A.
Referent:in, Affiliation Dr. Ahmed Bou-Rabee, Courant Institute
Datum, Zeit 18. März 2025, 15:15-16:15
Ort HG G 43
Title T.B.A.
HG G 43
25. März 2025
15:15-16:15 		Prof. Dr. Jill Pipher
Brown University
Details

Analysis Seminar

Titel Title T.B.A.
Referent:in, Affiliation Prof. Dr. Jill Pipher, Brown University
Datum, Zeit 25. März 2025, 15:15-16:15
Ort HG G 43
Title T.B.A.
HG G 43
1. April 2025
15:15-16:15 		Dr. Anna Skorobogatova
ETH Zurich, ITS
Details

Analysis Seminar

Titel Title T.B.A.
Referent:in, Affiliation Dr. Anna Skorobogatova, ETH Zurich, ITS
Datum, Zeit 1. April 2025, 15:15-16:15
Ort HG G 43
Title T.B.A.
HG G 43
8. April 2025
15:15-16:15 		Prof. Dr. Antoine Gloria
Sorbonne
Details

Analysis Seminar

Titel Title T.B.A.
Referent:in, Affiliation Prof. Dr. Antoine Gloria, Sorbonne
Datum, Zeit 8. April 2025, 15:15-16:15
Ort HG G 43
Title T.B.A.
HG G 43
15. April 2025
15:15-16:15 		Dr. Dominique Maldague
University of Cambridge
Details

Analysis Seminar

Titel Title T.B.A.
Referent:in, Affiliation Dr. Dominique Maldague , University of Cambridge
Datum, Zeit 15. April 2025, 15:15-16:15
Ort HG G 43
Title T.B.A.
HG G 43
29. April 2025
15:15-16:15 		Gianmarco Caldini
University of Trento
Details

Analysis Seminar

Titel Title T.B.A.
Referent:in, Affiliation Gianmarco Caldini , University of Trento
Datum, Zeit 29. April 2025, 15:15-16:15
Ort HG G 43
Title T.B.A.
HG G 43
13. Mai 2025
15:15-16:15 		Dr. Alexis Michelat
EPFL
Details

Analysis Seminar

Titel Title T.B.A.
Referent:in, Affiliation Dr. Alexis Michelat, EPFL
Datum, Zeit 13. Mai 2025, 15:15-16:15
Ort HG G 43
Title T.B.A.
HG G 43
20. Mai 2025
15:15-16:15 		Prof. Dr. Irene De Blasi
University of Turin
Details

Analysis Seminar

Titel Title T.B.A.
Referent:in, Affiliation Prof. Dr. Irene De Blasi , University of Turin
Datum, Zeit 20. Mai 2025, 15:15-16:15
Ort HG G 43
Title T.B.A.
HG G 43

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