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Bern-Fribourg Graduate Seminar

Program Autumn 2025

Date Name Title Location
02.10.2025 Denis Marti (UniFr) Closed geodesics on Riemannian manifolds University of Fribourg, PER 08 2.73
16.10.2025 Maximilian Liechti (UniBe) Decay of Systems of ODEs University of Bern, ExWi, B6
30.10.2025 Julian Roche (UniBe)
&
Eric Ströher (UniBe)
Orientations, Clifford Modules, and Bott Periodicity
&
From Fourier restrictions to Strichartz estimates
University of Fribourg, PER 08 2.73
13.11.2025 Andrea Tettamanti (UniFr) Speed of convergence of Lie groups to their metric limits University of Bern, ExWi, B6
27.11.2025 Josefina Villar (UniBe) Topological properties of configuration spaces University of Fribourg, PER 08 2.73
11.12.2025 Thomas Lafaye de Micheaux (UniFr)
&
Phan Quok Bao Tran (UniBe)
Property (T) and Infinite Dimensional Geometry
&
Factorization of Split Orthogonal Matrices into Elementary Factors
University of Bern, ExWi, B6

Organizers: Jasmoin Jörg (UniBe), Noa Vikman (UniFr)

Program Spring 2025

Date Name Title Location
27.02.2025 Luca Nalon (Unifr) Rigidity of Riemannian metrics in Lie groups Bern: ExWi, B7
06.03.2025 Nicolà Schnieper (Unibe) Noetherianity up to symmetry Fribourg: PER 08, 2.52
13.03.2025 Denis Marti (Unifr) An introduction to the Urysohn width Bern: ExWi, B7
20.03.2025 Eric Ströher (Unibe) Isometries of the Wasserstein space Fribourg: PER 08, 2.52
27.03.2025 Loïc Gassmann (Unifr) From Hex to Brouwer back to continuous Hex Bern: ExWi, B7
03.04.2025 Pietro Aldrigo (Unibe) Tutorial: How to obtain Integral Inequalities in Euclidean Submanifold Fribourg: PER 08, 2.52
10.04.2025 Sebastiano Nicolussi Golo (Unifr) Homogeneous Metric Spaces Bern: ExWi, B7
17.04.2025 No talk
24.04.2025 No talk
01.05.2025 Segev Gonen Cohen (ETH) Which groups act on the circle? Bern: ExWi, B7
08.05.2025 Ana Marija Vego (ETH) Iwasawa algebras and p-adic L-functions Fribourg: PER 08, 2.52
15.05.2025 Noa Vikman (Unifr) On the Existence of Harmonic Surfaces in Metric Spaces Fribourg: PER 08, 2.52
22.05.2025 No talk

Organizers: Jasmin Jörg (UniBe), Luca Nalon (UniFr)

Program Fall 2024

Date Name Title Location
26.09.2024 Gonzalo Ruiz Stolowicz (EPFL) Kernels, Heisenberg groups and Hyperbolic Representations Bern: ExWi, B5
03.10.2024 Zarif Ibragimov (UniBe) Contractive iterative linearization Galerkin methods Fribourg: PER 08, 2.52
10.10.2024 Denis Marti (UniFr) Lipschitz-volume rigidity Bern: ExWi, B5
17.10.2024 no talk Fribourg: PER 08, 2.52
24.10.2024 Nicola Paddeu (UniFr) A gentle introduction to Hamiltonian mechanics Bern: ExWi, B5
31.10.2024 Max Liechti (UniBe) Ghostbusting and Property A Fribourg: PER 08, 2.52
07.11.2024 CUSO Graduate Colloquium Bern
14.11.2024 Toni Ikonen (UniFr) Introduction to calibrations Bern: ExWi, B5
21.11.2024 Pietro Aldrigo (UniBe) An invitation to the Theory of Varifolds and its applications to the Plateau Problem Fribourg: PER 08, 2.52
28.11.2024 Maran Mohanarangan (UniFr) Rotational invariance of critical planar percolation Bern: ExWi, B5
05.12.2024 Philippe Knecht (UniFr) Simulating Glauber dynamics for the Ising model Fribourg: PER 08, 2.52
12.12.2024 Niels Vooijs (UniBe) Computability Theory and the Fundamental Difference between Arithmetic and Math Bern: ExWi, B5

Organizers: Elia Bubani (UniBe), Damaris Meier (UniFr)

Program Spring 2024

Date Name Title Location
22.02.2024 Martina Jørgensen (ETHZ) Injective hulls and higher rank hyperbolicity Bern: ExWi, B7
29.02.2024 Elia Bubani (UniBe) Conformal modulus and quasiconformal maps Fribourg: PER 08, 2.52
07.03.2024 Luke Higgins (UniFr) Spin geometry and positive scalar curvature Bern: ExWi, B7
14.03.2024 Jasmin Jörg (UniBe) Crossing number of curves on surfaces Fribourg: PER 08, 2.52
21.03.2024 Marco Inversi (UniBas) Energy conservation for fluid flows in an Onsager critical class Bern: ExWi, B7
Easter break
11.04.2024 Émilie Manseau (UniBe) A fragment of Abelian modal logic Fribourg: PER 08, 2.52
18.04.2024 Noa Vikman (UniFr) Minimal metric spheres and bubbling Bern: ExWi, B7
25.04.2024 Letizia Issini (UniGe) Self-similar groups and divergence Fribourg: PER 08, 2.52
02.05.2024 Anne Schnattinger (UniNe) Genus and Degree of Smooth Irreducible Curves Bern: ExWi, B7
Ascension
16.05.2024 Bao Tran (UniBe) Surfaces with Canonical Hyperplanes sections Fribourg: PER 08, 2.52
23.05.2024 Loïc Gassmann (UniFr) The Bunkbed conjecture Bern: ExWi, B7

Organizers: Elia Bubani (UniBe), Damaris Meier (UniFr)

Program Fall 2023

Date Name Title Location
21.09.2023 Levi Ryffel (UniBe) The combinatorics of curve systems on surfaces Fribourg: PER 08, 2.52
28.09.2023 Ulrik Thinggaard Hansen (UniFr) An Application of Haar Measures to Statistical Mechanics Bern: ExWi, B6
05.10.2023 Livio Ferretti (UniGe) Elkies' theorem on integral lattices and the topology of 4-manifolds Fribourg: PER 08, 2.52
12.10.2023 Nicola Paddeu (UniFr) SubRiemannian geodesics and magnetic fields Bern: ExWi, B6
19.10.2023 Damaris Meier (UniFr) The Geometry of Origami Fribourg: PER 08, 2.52
26.10.2023 Maran Mohanarangan (UniFr) Percolation from a quantum gravity perspective Bern: ExWi, B6
02.11.2023 Josua Schott (UniBe) Complex Geometry - A Scratch on the Surface Fribourg: PER 08, 2.52
09.11.2023 Ramona Häberli (UniGe) Splitting methods and their application to semilinear parabolic problems with non-periodic boundary conditions Bern: ExWi, B6
16.11.2023 Gaofeng Huang (UniBe) Approximation of continuous function by entire function on the real line Fribourg: PER 08, 2.52
22.11.2023-
24.11.2023
CUSO Graduate Colloquium Fribourg
30.11.2023 Denis Marti (UniFr) On Gromov's systolic inequality Bern: ExWi, B6
07.12.2023 Stéphane Desarzens (UniBe) Gödel's Incompleteness Theorems Fribourg: PER 08, 2.52

Organizers: Elia Bubani (UniBe), Damaris Meier (UniFr)

Program Spring 2023

Date Name Title Location
22.02.2023 Denis Marti (UniFr) The Plateau problem and currents Bern: ExWi, B7
01.03.2023 Andrea Rivezzi (UHA-Mulhouse) Structure of the Drinfeld-Yetter universal algebra Fribourg: PER 08, 2.73
08.03.2023 Tom Ferragut (UniFr) What if the shortest path was not the straight line? Bern: ExWi, B7
15.03.2023 Elia Bubani (UniBE) Conformal maps in Euclidean Spaces Fribourg: PER8, 2.73
22.03.2023 Lucas D'Alimonte (UniFr) The competition between the law of large numbers and the central limit Theorem in the shape of a droplet. Bern: ExWi, B1
29.03.2023 Alessandro Danelon (UniBE) Cubic forms of infinite strength are well-ordered Fribourg: PER8, 2.73
05.04.2023 Ulrik Thinggaard Hansen (UniFr) Loewner Chains: From the Bieberbach Conjecture to Fields Medals Bern: ExWi, B7
12.04.2023 Easter break Easter break Wherever you happen to find yourself in the world
19.04.2023 Andreas Blatter (UniBE) The Exponent of Matrix Multiplication and Asymptotic Tensor Rank Bern: ExWi, B7
26.04.2023 Aleksandra Korzhenkova (EPFL) Geometry of the Gaussian free field and its vector-valued descendant Fribourg: PER8, 2.73
03.05.2023 Atefeh Rohani (UniBE) Formalisations of Obligations in Logic Bern: ExWi, B7
10.05.2023 Stéphane Desarzens (UniBE) Introduction to Unification in Modal Logic Fribourg: PER8, 2.73
17.05.2023 Carina Santos (UniBas) Runge-Kutta based local time-stepping methods for forced wave equations Bern: ExWi, B7
24.05.2023 Simon Santschi (UniBE) The finite basis problem for idempotent semirings with a group reduct Fribourg: PER8, 2.73
31.05.2023 Luca Nalon (UniFr) The Sard problem for the End-point map in step 2 Carnot groups Bern: ExWi, B7

Organizers: Elia Bubani (UniBe), Ulrik Hansen (UniFr)

Program Fall 2022

Date Name Title Location
22.09.2022 Luca Nalon (UniFr) An introduction to non-standard analysis Fribourg: PER 08, 2.52
29.09.2022 Julia Münch (UniBe) Quasiconformal uniformization and reciprocal
metric spaces
Bern: ExWi, B5
06.10.2022 Louis Faul (UniFr) Stochastic chemical reaction networks Fribourg: PER 08, 2.52
13.10.2022 Paula Truöl (ETHZ) Slice knots - knot theory in dimension 4 Bern: ExWi, B5
20.10.2022 Nicola Paddeu (UniFr) Open mapping theorems for Lipschitz maps Fribourg: PER 08, 2.52
27.10.2022 Anna Bot (UniBas) Smooth complex rational affine surface with
uncountably many real forms
Bern: ExWi, B5
17:30 - 18:15
03.11.2022 Damaris Meier (UniFr) Injective metric spaces Fribourg: PER 08, 2.52
10.11.2022 Simon Santschi (UniBe) Interpolation and amalgamation Bern: ExWi, B5
17.11.2022 Philipp Reiser (UniFr) Positive Ricci curvature and surgery Fribourg: PER 08, 2.52
24.11.2022 Naomi Bredon (UniFr) Hyperbolic Coxeter groups and their
growth rates
Bern: ExWi, B5
01.12.2022 Gaofeng Huang (UniBe) Symplectic Reduction Fribourg: PER 08, 2.52
15.12.2022 Xavier Richard (UniFr) A agent-based model of bacterial chemotaxis Bern: ExWi, B5

Organizers: Livio Ferretti (UniBe), Damaris Meier (UniFr)

Program Spring 2022

Date Name Title Location
24.02.2022 Elia Bubani Pseudo-distances and hyperbolicity Bern: ExWi, B78
03.03.2022 Ulrik Hansen A Taste of Percolation Fribourg: PER 08, 2.52
10.03.2022 Livio Ferretti Topology and combinatorics in knot theory Bern: ExWi, B7
17.03.2022 Denis Marti Plateau's problem Fribourg: PER 08, 2.52
24.03.2022 Francesca Tripaldi An overview of spectral sequences Bern: ExWi, B7
31.03.2022 Lucas d'Alimonte An overview of the behavior of correlations
in the Ising model
Fribourg: PER 08, 2.52
07.04.2022 Stéphane Desarzens Cantor-Bernstein implies excluded middle Bern: ExWi, B7
14.04.2022 Levi Ryffel Braid Groups in Mapping Class Groups Fribourg: PER 08, 2.52
28.04.2022 Alejandro Vargas 3 proofs that every degree-3 smooth surface
in ℙ3ℂ has 27 lines
Bern: ExWi, B7
05.05.2022 Julia Münch Cannon's Conjecture; when Geometric Group
Theory meets Analysis
Fribourg: PER 08, 2.52
12.05.2022 Nafie Tairi The Grassmanian as a projective variety Bern: ExWi, B7
19.05.2022 Florine Pierroz Dynamical properties of pseudo-Anosov maps Fribourg: PER 08, 2.52
02.06.2022 Audhild Høgåsen Lattice-based cryptography for electronic voting Bern: ExWi, B7

Organizers: Livio Ferretti (UniBe), Damaris Meier (UniFr)