Wintersemester 2024/2025
In der Regel findet das Oberseminar montags um 16:15 Uhr in Präsenz statt im SRZ 216. Ausnahmen (Zoom, Mittwochstermin, andere Zeit) sind eingetragen. Falls Sie die Zugangsdaten für die Zoom-Vorträge noch nicht per Email erhalten haben, wenden Sie sich bitte an sandra.huppert@uni-muenster.de.
Datum Sprecher*In Vortrag 07.10.2024 Enric Sole-Farre (University College London) Hitchin functionals and Einstein Coindex of Cohomogeneity-One Nearly Kähler Manifolds 14.10.2024 Roger Bielawski (Universität Hannover) QALF hyperkaehler manifolds of dihedral type 21.10.2024 Thomas Richard (Université Paris Est Créteil) Scalar curvature and injectivity radius 28.10.2024 Silvia Sabatini (Universität Köln)
via ZoomPositive monotone symplectic manifolds with symmetry 04.11.2024 Andreas Kollross (Universität Stuttgart) Totally geodesic submanifolds of symmetric and homogeneous spaces 11.11.2024 Max Reinhold Jahnke (Universität zu Köln) The cohomology of left-invariant involutive structures on compact Lie groups 18.11.2024 Benjamin Brück (Universität Münster) Group cohomology via tesselations of symmetric spaces 25.11.2024 Eva Kopfer (Universität Bonn) Ricci curvature, optimal transport and functional inequalities 02.12.2024 David Witt Nyström (Universität Göteborg) Competitive Hele-Shaw flows and quadratic differentials 09.12.2024 Ivan Solonenko Classification of cohomogeneity-one actions on noncompact symmetric spaces 16.12.2024 tba 13.01.2025 Anna Dall`Acqua (Universität Bonn) 20.01.2025 Marius Müller (Universität Augsburg) Short closed geodesics and the Willmore energy 27.01.2025 José Miguel Balado Alves (Universität Münster) A cohomogeneity one approach to (poly) harmonic maps
Frühere Oberseminare
Sommersemester 2024
In der Regel findet das Oberseminar montags um 16:15 Uhr in Präsenz statt im SRZ 214. Ausnahmen (Zoom, Mittwochstermin, andere Zeit) sind eingetragen. Falls Sie die Zugangsdaten für die Zoom-Vorträge noch nicht per Email erhalten haben, wenden Sie sich bitte an sandra.huppert@uni-muenster.de.
Datum Sprecher*In Vortrag 08.04.2024 Stefan Schreieder, Hannover Holomorphic one-forms without zeros 15.04.2024 Artemis Vogiatzi, London High Codimension Mean Curvature Flow in $\mathbb{C}P^n$. 22.04.2024 Stephan Stadler, Bonn Rigidity of ideal symmetric sets 29.04.2024 Renan Assimos, Hannover Remarks on the generalised Calabi-Yau problem in higher codimensions 08.05.2024 (Mittwoch!!)
RAUM SRZ 202
Annegret Burtscher, Radboud Universiteit The many faces of globally hyperbolic spacetime 13.05.2024 Marco Radeschi, Turin Reading Topological ellipticity of G-manifolds from their quotients 27.05.2024 Rosa Sena-Dias, Lissabon Einstein metrics from the Calabi Ansatz via Derdziński duality
03.06.2024 Adam Thompson, Queensland Ricci solitons that fibre over hyperbolic surfaces 10.06.2024
Zoom
Volker Branding, Wien On conformal biharmonic maps and hypersurfaces 17.06.2024 Trung Nghiem, Montpellier Calabi-Yau metrics on symmetric spaces 24.06.2024 Oskar Riedler, Münster Eigenfamilies and polynomical harmonic morphisms 01.07.2024 Alix Deruelle, Paris Ancient solutions to the Ricci flow coming out of spherical orbifolds 08.07.2024 Jonas Hirsch, Leipzig Bubbble convergence, Energy identity, Geodesics and Index estimates
for sequences of α-harmonic maps15.07.2024 Anna Fino, Turin Strong G-2 structures with torsion 17.07.2024 (Mittwoch!) Philip Reiser, Fribourg Manifolds of positive Bakry-Émery Ricci curvature
Wintersemester 2023/2024
In der Regel findet das Oberseminar montags um 16:15 Uhr in Präsenz statt im SRZ 214. Ausnahmen (Zoom, Mittwochstermin, andere Zeit) sind eingetragen. Falls Sie die Zugangsdaten für die Zoom-Vorträge noch nicht per Email erhalten haben, wenden Sie sich bitte an sandra.huppert@uni-muenster.de.
Datum Sprecher Vortrag 09.10.2023 Lorenzo Foscolo, University College London Yang-Mills instantons and codiemnsion-1 collapse 16.10.2023 Klaus Kröncke, KTH Stockholm Scalar curvature rigdity, mass and stability of Einstein manifolds 23.10.2023 Sven Hirsch, IAS Princeton On a generalization of Geroch's conjecture
via Zoom30.10.2023 Karin Melnick, Universität Luxembourg Compact, Lorentzian conformally flat manifolds 06.11.2023 Wolfram Bauer, Universität Hannover Subriemannian geometry and spectral analysis 13.11.2023 Daniele Semola, ETH Zürich Ricci Curvature, Fundamental Groups, and the Milnor Conjecture 20.11.2023 Shubham Dwivedi, HU Berlin Geometric flows of $G_2$ - structures 27.11.2023 Ragini Singhal, ULB Brüssel, today in M4 Nearly half-flat \rm{SU}{3} structures on $S³\times S³$ 04.12.2023 Lennart Machill, Universität Münster Nonlinear and Linearized Models in Elasticity 13.12.2023 (Mittwoch) Uwe Semmelmann, Universität Stuttgart Integrability of infinitesimal Einstein deformations on Kähler manifolds
18.12.2023 Jan Sbierski, University of Edinburgh On the uniqueness problem for extensions of Lorentzian manifolds 08.01.2024 Francesca Oronzio, KTH University ADM mass and potential theory 15.01.2024 Hartmut Weiß, Universität Kiel, today in M4 On the modularity of gravitational instantons of type ALG 22.01.2024 Marko Sobak, Universität Münster [was on the 29th]
Haunted Einstein-Yang-Mills wormholes 29.01.2024 Stéphanie Cupit, Universität Bochum [was on the 22nd] A generalisation of Sylvester's law of inertia Sommersemester 2023
In der Regel findet das Oberseminar montags um 16:15 Uhr in Präsenz statt im SRZ 214. Ausnahmen (Zoom, Mittwochstermin, andere Zeit) sind eingetragen. Falls Sie die Zugangsdaten für die Zoom-Vorträge noch nicht per Email erhalten haben, wenden Sie sich bitte an sandra.huppert@uni-muenster.de.
Datum Sprecher Vortrag 03.04.2023 Katrin Tent, Münster Burnside groups and iterated small cancellation theory 17.04.2023 Izar Alonso Lorenzo, Oxford New examples of SU(2)2-invariant G_2-instantons
24.04.2023 Nikhil Savale, Köln Bochner Laplacians and Bergman kernels for families
M508.05.2023 Christian Lange, München
Regularity of billiards and geodesic flows15.05.2023 Dennis Wulle, Münster Cohomogeneity one manifolds with quasipositive curvature 22.05.2023 Philipp Reiser, Fribourg Surgery and positive intermediate Ricci curvature
05.06.2023 Gustav Nilsson, Potsdam Topology of Toric Gravitational Instantons 12.06.2023 Max Stolarski, Warwick On the Structure of Singularities of Mean Curvature Flows with Mean Curvature Bounds
M5
19.06.2023 Polyxeni Spilioti, Göttingen Twisted Ruelle zeta function on locally symmetric spaces, the Fried’s conjecture and further applications 26.06.2023 Reto Buzano, Turin Mean curvature flow and Heegaard surfaces in lens spaces
24.07.2023 Izar Alonso Lorenzo, Oxford A non-existence result for balanced SU(3)- structures on cohomogeneity one manifolds
SRZ 214, 15 Uhr
24.07.2023 Francesco Pediconi, Florenz A moment map for twisted Hamiltonian vector fields on locally conformally Kähler manifolds
SRZ 214, 16.15 Uhr
Wintersemester 2022/2023
Datum Sprecher Vortrag 10.10.2022 Gilles Courtois (Sorbonne-Jussieu) Cheeger inequality for differential forms 17.10.2022 David Tewodrose (Université de Nantes) Rigidity of the first Betti number under Kato bounds on the Ricci curvature 24.10.2022 Jorgen Olsen Lye (Uni Hannover) Geodesics on a K3 surface near the orbifold limit
31.10.2022 Lothar Schiemanowski (Uni Kiel) Desingularization of weak holonomy conifolds and topology of
AC Calabi--Yau and G_2 manifolds07.11.2022 Stephen Lynch (Imperial College London) Uniqueness of ancient solutions to curvature flows 14.11.2022 Antoine Song (Caltech) via Zoom, Beginn 17:15 Uhr, The spherical Plateau problem: uniqueness and stability for hyperbolic manifolds 23.11.2022 Elena Mäder-Baumdicker (TU Darmstadt) Mittwoch 16:15 Uhr SRZ 214, Recent developments concerning the Volume Preserving Mean Curvature Flow 28.11.2022 Frieder Jäckel (Uni Bonn) Stability of hyperbolic metrics, room M3 05.12.2022 Sebastian Goette (Uni Freiburg) Extra Twisted Connected Sums and their $\nu$-Invariants 12.12.2022 Miles Simon (Uni Magdeburg) Initial stability estimates for Ricci flow and three dimensional Ricci-pinched manifolds 19.12.2022 Anna Sakovich (Uppsala Universitet) Towards a space time intrinsic flat convergence
09.01.2023 Francesco Lin (Columbia University) Floer homology and the spectral geometry of hyperbolic three-manifolds
via Zoom, time: 4:15pm16.01.2023 Cristiano Spotti (Aarhus Universitet) Balanced Chern-Ricci flat metrics on non-Kähler small resolutions 23.01.2023 Konstantinos Zemas (Uni Münster) Geometric rigidity estimates in variable domains and applications in dimension reduction 30.01.2023 Melanie Rupflin (University of Oxford) Quantitative estimates for almost harmonic maps 13.02.2023 David González Alvaro (Universidad Politécnica de Madrid) Positive k-th intermediate Ricci curvature on homogeneous spaces
Sommersemester 2022
Datum Sprecher Vortrag 04.04.2022 Darya Sukhorebska, ILTPE of the National Academy of Sciences of Ukraine and WWU Münster Simple closed geodescis on regular tetrahedra in spaces of constant curvature 11.04.2022 Kevin Poljsak, WWU Münster Towards Finding the Second Best Einstein Metric in Low Dimensions 25.04.2022
Henri Guenancia, Institut de Mathématiques de Toulouse and CNRS Compact Kähler manifolds with negative holomorphic sectional curvature 02.05.2022 Victor Sanmartin Lopez, Universidad Politécnica de Madrid
Isoparametric hypersurfaces in symmetric spaces
09.05.2022 Linus Kramer, WWU Münster Solutions of a quadratic matrix equation
16.05.2022 Diego Corro, Universität zu Köln Yamabe type problems and singular Riemannian foliations
23.05.2022 Christopher Deninger, WWU Münster Knots, primes and periodic orbits 30.05.2022 Jan Nienhaus, WWU Münster Torus actions in positive curvature 13.06.2022 Nadine Große, Universität Freiburg The space of metrics with invertible Dirac operators 27.06.2022 Ramiro Lafuente (University of Queensland)
Hermitian manifolds with flat Gauduchon connections 04.07.2022 Lee Kennard, Syracuse University Positive curvature and elementary abelian group actions 04.07.2022 Wilderich Tuschmann, Karlsruhe Institute of Technology Positive Ricci Curvature Metrics and Moduli Spaces 05.07.2022 Renato Bettiol (CUNY) Extremality and rigidity for scalar curvature in dimension 4 Wintersemester 2021/2022
Das Oberseminar findet in diesem Semester sowohl per Zoom als auch in Präsenz statt. Beginn ist in der Regel um 16.15 Uhr, Ausnahmen sind eingetragen.
Falls Sie die Zugangsdaten (Passwort) noch nicht per Email erhalten haben, wenden Sie sich bitte an sandra.huppert@uni-muenster.de
Datum Sprecher Vortrag 18.10.2021 Jeff Viaclovsky, UC Irvine Gravitational instantons with quadratic volume growth Zoom, 17-18 Uhr 25.10.2021 Jean Lagacé, University of Bristol Spectral geometry, minimal surfaces and homogenisation Zoom 08.11.2021 Ved Datar, Indian Institute of Science, Bangalore Some rigidity theorems in Kaehler geometry Zoom 15.11.2021 Jian Wang, Stony Brook University Topological rigidity and positive scalar curvature Zoom 22.11.2021 Mayukh Mukherjee, Indian Institute of Technology, Bombay Billiard flow and eigenfunction concentration on polyhedra Zoom 29.11.2021 Mario Schulz, WWU Münster Free boundary minimal surfaces Präsenz 06.12.2021 Louis Ioos, MPIM Bonn Quantum measurement theory over projective manifolds Präsenz 13.12.2021 Matthias Wink, WWU Münster The Bochner technique for Kähler manifolds Präsenz 20.12.2021 Matan Eilat, Weizmann Institute of Technology Rigidity of Riemannian embeddings of discrete metric spaces Zoom 10.01.2022 Vicente Cortés, Universität Hamburg Quaternionic Kähler manifolds fibering over the real line with fibers of finite volume Präsenz 17.01.2022 Anusha Krishnan, WWU Münster Positive sectional curvature and Ricci flow Präsenz 24.01.2022 Uwe Semmelmann, Universität Stuttgart Stability of Einstein metrics Präsenz 31.01.2022 Gustav Holzegel, WWU Münster Unique Continuation for the Einstein Equations in asymptotically AdS spacetimes Präsenz Sommersemester 2021
Das Oberseminar findet in diesem Semester per Zoom statt. Beginn ist in der Regel um 16.15 Uhr, Ausnahmen sind eingetragen.
Falls Sie die Zugangsdaten (Passwort) noch nicht per Email erhalten haben, wenden Sie sich bitte an sandra.huppert@uni-muenster.de
Datum Sprecher Vortrag PDF 12.04.2021 Philipp Reiter (TU Chemnitz) Elastic knots pdf 19.04.2021 Dorin Bucur (Université de Savoie) Stable and unstable spectral inequalities pdf 26.04.2021 Rudolf Zeidler (WWU Münster) Scalar and mean curvature comparison via the Dirac operator pdf 03.05.2021 Christine Breiner (Fordham) Harmonic maps into CAT(k) spaces pdf 10.05.2021 Ursula Ludwig (Duisburg-Essen) Witten deformation and Cheeger-Müller theorem for singular spaces with conical singularities 17.05.2021 Xiaoyang Chen (Tongji University) Some vanishing theorems on manifolds with almost nonnegative /nonpositive Ricci curvature pdf 31.05.2021 Rosa Sena-Dias (IST Lisboa) Uniqueness among scalar-flat Kähler toric metrics on non-compact surfaces pdf 07.06.2021 Robin Neumayer (Northwestern) $d_p$ Convergence and $\epsilon$-regularity theorems for entropy and scalar curvature lower bounds pdf 14.06.2021 Luca Di Cerbo (University of Florida) Higher Graph Manifolds and Singer Conjecture pdf 21.06.2021 Ilaria Mondello (Paris Est Créteil) Limits of manifolds with a Kato bound on the Ricci curvature pdf 28.06.2021 Karin Melnick (Maryland) Conformal groups of compact Lorentzian manifolds 05.07.2021 Caterina Zeppieri (WWU Münster) Homogenisation of variational problems: an overview pdf 12.07.2021 Yuguang Zhang (Hannover) Pair-of-pants decomposition of general type hypersurface in CP3 19.07.2021 Andreas Gastel (Duisburg-Essen) Regularity questions for polyharmonic maps pdf Wintersemester 2020/2021
Das Oberseminar findet in diesem Semester per Zoom statt. Beginn ist in der Regel um 16.15 Uhr, Ausnahmen sind eingetragen.
Falls Sie die Zugangsdaten (Passwort) noch nicht per Email erhalten haben, wenden Sie sich bitte an sandra.huppert@uni-muenster.de
Datum Sprecher Vortrag 02.11.2020 Daniel Stern, Chicago Min-max harmonic maps and extremal metrics for Laplacian eigenvalues 09.11.2020 Julian Scheuer, Cardiff A general approach to stability of the soap bubble theorem and related problems 16.11.2020
18 Uhr s.t.Guofang Wei, UCSB Ricci flow and $L^{n/2}$-curvature pinching 23.11.2020 Stefano Montaldo, Cagliari Higher order energy functionals and polyharmonic hypersurfaces 30.11.2020 Arthur Bartels, Münster Long thin covers for flows 07.12.2020 Yang Li, MIT Metric SYZ conjecture 14.12.2020 Renato Bettiol, CUNY Pinched 4-manifolds 11.01.2021 Dan Lee, CUNY 18.01.2021 Joel Fine, Brüssel Knots, minimal surfaces and J-holomorphic curves 25.01.2021 Joeri van der Veken, Leuven Lagrangian submanifolds of the complex quadric 01.02.2021 Amitai Yuval 08.02.2021 Keaton Naff, Columbia MCF of nearly-planar submanifolds in higher codimension Sommersemester 2020 Datum Sprecher Vortrag 11.05.2020 Anna Maria Fino, Turin Closed G_2-structures and Laplacian flow 18.05.2020 Klaus Kröncke, Hamburg L^p-stability and positive scalar curvature rigidity of Ricci-flat ALE manifolds 25.05.2020 Volker Branding, Wien Higher order generalizations of harmonic maps 08.06.2020 Matthias Wink, UCLA
17-18 Uhr
New Curvature Conditions for the Bochner Technique 15.06.2020 Miguel Domínguez Vázquez, Santiago de Compostela Cohomogeneity one actions and inhomogeneous isoparametric hypersurfaces in quaternionic hyperbolic spaces 22.06.2020 Peter McGrath, UPenn Quantitative Isoperimetric Inequalities on Riemannian Surfaces 29.06.2020 Tristan Ozuch-Meersseman, ENS Paris Noncollapsed degeneration of Einstein 4-manifolds 06.07.2020 Shih-Kia Chiu, Notre Dame A Liouville type theorem for harmonic 1-forms Wintersemester 2019/2020 Datum Sprecher Vortrag 07.10.2019 Jason Lotay, Oxford Minimal submanifolds, mean curvature flow and the Gibbons-Hawking ansatz 14.10.2019 Fernando Galaz-Garcia, KIT On quotients of spaces with Ricci curvature bounded below 21.10.2019 Elena Mäder-Baumdicker, Darmstadt Willmore spheres are unstable 28.10.2019 Reto Buzano, Turin Bubbling analysis for closed and free-boundary minimal hypersurfaces 04.11.2019 Lorenzo Foscolo, Edinburgh Complete non-compact Spin(7)-manifolds from self-dual Einstein 4-orbifolds 11.11.2019 Thomas Richard, Université Paris-Est Créteil Synthetic curvature bounds on stratified spaces 18.11.2019 Panagiotis Gianniotis, Athen Regularity theory for Type I Ricci flows 25.11.2019 Francesco Di Giovanni, London The Ricci flow of warped Berger metrics 02.12.2019 Michael Weiß, Münster The diffeomorphism group of an exotic sphere 09.12.2019 Manuel Amann, Augsburg Non-negatively curved vector bundles over cohomogeneity one manifolds 16.12.2019 Alix Deruelle, Paris A Lojasiewicz inequality for ALE Ricci flat metrics 13.01.2020 Huy Nguyen, London High Codimension Mean Curvature Flow and Surgery 20.01.2020 Fabian Lehmann, London
Cohomogeneity one families in Spin(7) geometry27.01.2020
14.30 -15.30 Uhr, SR2
Maximilian Stegemeyer, Würzburg Endpoint geodesics in extrinsic symmetric spaces 27.01.2020
16-18 Uhr, SR4
Jason Ledwidge, Tübingen The structure of non-compact shrinking Ricci solitons via heat kernel estimates Sommersemester 2019 Datum Sprecher Vortrag 08.04.2019 Jian Wang, Grenoble Contractible 3-manifolds and positive scalar curvature 15.04.2019 Angela Stevens, Münster Homogenization of the heat equation in periodically layered domains 29.04.2019 Marco Freibert, Kiel The spinor flow on homogeneous manifolds 06.05.2019 Miles Simon, Magdeburg On the regularity of Ricci flows coming out of metric spaces 13.05.2019 Benedikt Wirth, Münster Variational models for transportation networks: weak-* relaxation and flat chains 20.05.2019 Nina Lebedeva, St. Petersburg Spaces with weak lower curvature bound 27.05.2019 Jiawei Liu, Magdeburg Stability of the Conical Kähler-Ricci flows on Fano manifolds 03.06.2019 Kevin Poljsak, Münster Convergence behaviour of the curvature tensor for a converging Ricci flow 17.06.2019 Niels Martin Møller, Kopenhagen Forgetful classifications of ancient mean curvature flows 08.07.2019 Jan Nienhaus, Münster Spaces with periodic cohomology rings Wintersemester 2018/2019 Datum Sprecher Vortrag 15.10.2018 Joel Fine, Brüssel Examples of compact Einstein 4-manifolds with negative curvature 22.10.2018 Bernhard Hanke, Augsburg Local flexibility for open partial differential relations 29.10.2018 Stephan Stadler, München A Morse lemma for quasiplanes 05.11.2018 Ricardo Mendes, Köln Diameter of quotients of the sphere by isometric group actions 12.11.2018 Olaf Müller, Berlin New conformal methods at the interface of analysis, geometry and mathematical physics 19.11.2018 Stefan Suhr, Bochum A min-max characterization of Zoll metrics 26.11.2018 Guofang Wang, Freiburg A new Minkowsky formula for free boundary hypersurfaces 03.12.2018 Christian Lange, Köln Existence of infinitely many closed geodesics on closed 2-orbifolds 10.12.2018 Jan Swoboda, München Analysis and geometry of Higgs bundle moduli spaces 17.12.2018 Christian Ketterer, Toronto Metric measure spaces with 2-sided curvature bounds 07.01.2019 Ernst Kuwert, Freiburg The total squared curvature functional for 2-dimensional surfaces in Riemannian manifolds 14.01.2019 Peter Albers, Heidelberg Symplectic billiards 21.01.2019 Johannes Ebert, Münster Diffeomorphism groups and the space of metrics of positive scalar curvature 28.01.2019 Oliver Goertsches, Marburg Geometric structures on biquotients Sommersemester 2018 Datum Sprecher Vortrag 09.04.2018 Norman Zergänge, Warwick Convergence of Riemannian 4-manifolds with L^2 -curvature bounds 16.04.2018 Viveca Erlandsson, Bristol Counting curves on surfaces 23.04.2018 Klaus Kröncke, Hamburg Stability of ALE Ricci-flat manifolds under Ricci flow 30.04.2018 Mauricio Bustamante, Augsburg Bundles with fiberwise negatively curved metrics 07.05.2018 Manuel Amann, Augsburg Orbifolds with all geodesics closed 14.05.2018 Franziska Beitz, Münster Bianchi-convex functions and rigidity of shrinking gradient Ricci solitons 28.05.2018 Boris Vertman, Oldenburg Stability of the Ricci de Turck flow on singular spaces 04.06.2018 Anand Dessai, Fribourg Moduli space of metrics of nonnegative sectional/positive Ricci curvature on homotopy real projective spaces 18.06.2018 Marco Radeschi, Notre Dame Manifolds submetries, and polynomial algebras 25.06.2018 Anda Degeratu, Stuttgart Towards a construction of constant scalar curvature Kähler metrics on elliptic surfaces 02.07.2018 Anton Petrunin, PSU Convergence of curvature tensor 09.07.2018 Wilderich Tuschmann, Karlsruhe Spaces of nonnegatively curved metrics 18.07.2018 Ronan Conlon, Miami New examples of complete Calabi-Yau metrics on n for Wintersemester 2017/2018 Datum Sprecher, Universität Titel 09.10.2017 Nina Lebedeva, WWU Münster On optimal transport continuity property 16.10.2017 Julian Scheuer, Universität Freiburg Harnack inequalities for evolving hypersurfaces 23.10.2017 Huy Nguyen, Queen Mary University London Singularity formation in high codimension mean curvature flow 30.10.2017 Daniele Valtorta, Universität Zürich Singularities for Q-valued Dirichlet minimizing functions 06.11.2017 Bogdan Georgiev, Universität Bonn Some estimates on the geometry of Laplacian eigenfunctions 13.11.2017 Fernando Galaz Garcia, KIT Sufficiently collapsed irreducible Alexandrov spaces are geometric 20.11.2017 Chao Qian, WWU Münster The story of isoparametric foliation: From unit spheres to exotic spheres 27.11.2017 Martin Kell, Universität Tübingen Group actions on spaces with Ricci curvature bounded below 04.12.2017 Luigi Vezzoni, Universität Turin A quantitative version of a theorem of Alexandrov 11.12.2017 Tobias Lamm, KIT Expanders for the harmonic map flow 18.12.2017 Henrik Matthiesen, MPI Bonn The analytic systole of Riemannian surfaces 15.01.2018 Artem Nepechiy, Münster New convex functions on Alexandrov spaces 22.01.2018 Saskia Roos, MPI Bonn The Dirac operator under codimension one collapse 29.01.2018 Matthias Wink, Oxford Constructions of complete Ricci solitons of cohomogeneity one