08.01.2020, 10:00 Uhr, Seminar on Nonlinear Algebra

• Mateusz Michalek (MPI MIS, Leipzig)
• Lagrangian Grassmannian, equivariant K-theory, compactifications of moduli spaces and other notions from algebraic statistics

08.01.2020, 11:00 Uhr, Seminar on Nonlinear Algebra

• Robin van der Veer (Katholieke Universiteit Leuven)
• The maximum likelihood locus and Bernstein-Sato ideals

15.01.2020, 11:00 Uhr, Seminar on Nonlinear Algebra

• Miruna-Stefana Sorea (MPI MIS, Leipzig)
• The relative positions of the graphs of univariate polynomials

22.01.2020, 10:00 Uhr, Seminar on Nonlinear Algebra

• Viola Siconolfi (Università degli Studi di Roma Tor Vergata)
• Coxeter groups, Bruhat graphs and Ricci curvature

22.01.2020, 11:00 Uhr, Seminar on Nonlinear Algebra

• Arthur Bik (Universität Bern)
• Strength and polynomial functors

29.01.2020, 11:00 Uhr, Seminar on Nonlinear Algebra

• Elise Walker (Texas A&M)
• Toric degenerations and homotopy methods from finite Khovanskii bases

12.02.2020, 11:00 Uhr, Seminar on Nonlinear Algebra

• Thomas Yahl (Texas A&M)
• Solving decomposable sparse systems

19.02.2020, 11:00 Uhr, Seminar on Nonlinear Algebra

• Irem Portakal (Otto von Guericke University Magdeburg)
• Kazhdan-Lusztig varieties with a view towards T-varieties

26.02.2020, 11:00 Uhr, Seminar on Nonlinear Algebra

• Timothy Duff (Georgia Institute of Technology)
• Finding, solving, and simplifying minimal problems in computer vision

04.03.2020, 11:00 Uhr, Seminar on Nonlinear Algebra

• Matías Bender (Technical University Berlin)
• Solving sparse polynomial systems by computing Gröbner bases faster

17.03.2020, 17:00 Uhr, Nonlinear Algebra Seminar Online (NASO)

• Ralph Morrison (Williams College)
• Higher-distance commuting varieties
• see video

17.03.2020, 17:40 Uhr, Nonlinear Algebra Seminar Online (NASO)

• Diego Cifuentes (Massachusetts Institute of Technology)
• The SDP-exact region in quadratic optimization
• see video

17.03.2020, 18:20 Uhr, Nonlinear Algebra Seminar Online (NASO)

• Carlos Amendola (Technical University Munich)
• Introduction to Max-Linear Models and Tropical Linear Algebra
• see video

19.03.2020, 17:00 Uhr, Nonlinear Algebra Seminar Online (NASO)

• Kaie Kubjas (Aalto University)
• Nonnegative rank
• see video

19.03.2020, 17:40 Uhr, Nonlinear Algebra Seminar Online (NASO)

• Jean-Philippe Labbé (Freie Universität Berlin)
• Convex geometry of subword complexes
• see video

19.03.2020, 18:20 Uhr, Nonlinear Algebra Seminar Online (NASO)

• Rainer Sinn (Freie Universität Berlin)
• Multiple views on Chirality
• see video

24.03.2020, 17:00 Uhr, Nonlinear Algebra Seminar Online (NASO)

• Noémie Combe (MPI MIS, Leipzig)
• The realm of operads
• see video

24.03.2020, 17:40 Uhr, Nonlinear Algebra Seminar Online (NASO)

• Yairon Cid Ruiz (MPI MIS, Leipzig)
• Specialization of graded modules and generic freeness of local cohomology
• see video

24.03.2020, 18:20 Uhr, Nonlinear Algebra Seminar Online (NASO)

• Lorenzo Venturello (MPI MIS, Leipzig)
• Wasserstein distance to an algebraic variety
• see video

26.03.2020, 17:00 Uhr, Nonlinear Algebra Seminar Online (NASO)

• Fulvio Gesmundo (University of Copenhagen)
• Border rank under tensor product: geometry and complexity
• see video

26.03.2020, 17:40 Uhr, Nonlinear Algebra Seminar Online (NASO)

• Eliana Duarte (MPI MIS, Leipzig + Otto von Guericke University Magdeburg)
• Algebraic geometry with a view towards applications
• see video

26.03.2020, 18:20 Uhr, Nonlinear Algebra Seminar Online (NASO)

• Paul Breiding (Technical University Berlin)
• Sampling Algebraic Varieties
• see video

27.03.2020, 17:00 Uhr, Nonlinear Algebra Seminar Online (NASO)

• Marta Panizzut (Technical University Berlin)
• Tropical Cubic Surfaces
• see video

27.03.2020, 17:40 Uhr, Nonlinear Algebra Seminar Online (NASO)

• Carlos Amendola (Technical University Munich)
• Algebraic Statistics: Nonlinear Algebra in Action
• see video

27.03.2020, 18:20 Uhr, Nonlinear Algebra Seminar Online (NASO)

• Daniele Agostini (Humboldt University Berlin)
• Theta functions: geometry, physics and statistics
• see video

31.03.2020, 17:00 Uhr, Nonlinear Algebra Seminar Online (NASO)

• Kathlén Kohn (KTH Royal Institute of Technology, Stockholm)
• Minimal Problems in Computer Vision
• see video

31.03.2020, 17:40 Uhr, Nonlinear Algebra Seminar Online (NASO)

• Mima Stanojkovski (MPI MIS, Leipzig)
• Toric varieties from cyclic matrix groups
• see video

31.03.2020, 18:20 Uhr, Nonlinear Algebra Seminar Online (NASO)

• Valeria Bertini (Technical University Chemnitz)
• Hyperkähler manifolds and rational curves
• see video

02.04.2020, 17:00 Uhr, Nonlinear Algebra Seminar Online (NASO)

• Roser Homs Pons (MPI MIS, Leipzig)
• Primary ideals and their differential equations
• see video

02.04.2020, 17:40 Uhr, Nonlinear Algebra Seminar Online (NASO)

• Miruna-Stefana Sorea (MPI MIS, Leipzig)
• Exact Solutions in Log-Concave Maximum Likelihood Estimation
• see video

02.04.2020, 18:20 Uhr, Nonlinear Algebra Seminar Online (NASO)

• Türkü Özlüm Celik (University of Leipzig)
• Lie’s double translation surfaces meet theta surfaces
• see video

07.04.2020, 17:00 Uhr, Nonlinear Algebra Seminar Online (NASO)

• Emre Sertöz (University Hannover)
• Down to characteristic p and then back up again: computations with the p-adic obstruction map
• see video

07.04.2020, 17:40 Uhr, Nonlinear Algebra Seminar Online (NASO)

• Frank Röttger (MPI MIS, Leipzig)
• Geometry of Optimal Design for Generalized Linear Models
• see video

07.04.2020, 18:20 Uhr, Nonlinear Algebra Seminar Online (NASO)

• Leon Zhang (University of California at Berkeley)
• The flag variety of tropical linear spaces
• see video

09.04.2020, 17:00 Uhr, Nonlinear Algebra Seminar Online (NASO)

• Jeffrey Giansiracusa (Swansea University)
• Tropical differential equations
• see video

09.04.2020, 17:40 Uhr, Nonlinear Algebra Seminar Online (NASO)

• Louis Theran (University of St. Andrews)
• Graph rigidity and measurement varieties
• see video

09.04.2020, 18:20 Uhr, Nonlinear Algebra Seminar Online (NASO)

• Eugenie Hunsicker (Loughborough University)
• Architecture for the Working Mathematician
• see video

14.04.2020, 17:00 Uhr, Nonlinear Algebra Seminar Online (NASO)

• Rosa Winter (Leiden University)
• Rational points on del Pezzo surfaces of degree 1
• see video

14.04.2020, 17:40 Uhr, Nonlinear Algebra Seminar Online (NASO)

• Yulia Alexandr (University of California at Berkeley)
• Logarithmic Voronoi Cells
• see video

14.04.2020, 18:20 Uhr, Nonlinear Algebra Seminar Online (NASO)

• Balazs Szendroi (University of Oxford)
• The punctual Hilbert scheme of 4 points in affine 3-space via computer algebra and representation theory
• see video

16.04.2020, 17:00 Uhr, Nonlinear Algebra Seminar Online (NASO)

• Lisa Nicklasson (Stockholm University)
• Subalgebras of a polynomial ring with minimal Hilbert function
• see video

16.04.2020, 17:40 Uhr, Nonlinear Algebra Seminar Online (NASO)

• Tara Fife (Louisiana State University)
• A Friendly Introduction to Matroids
• see video

16.04.2020, 18:20 Uhr, Nonlinear Algebra Seminar Online (NASO)

• José Samper (MPI MIS, Leipzig)
• Some shelling orders are better than others
• see video

21.04.2020, 17:00 Uhr, Nonlinear Algebra Seminar Online (NASO)

• Anna Seigal (University of Oxford)
• Torus Actions and Maximum Likelihood Estimation
• see video

21.04.2020, 17:40 Uhr, Nonlinear Algebra Seminar Online (NASO)

• Philipp Reichenbach (Technical University Berlin)
• Invariant Theory and Matrix Normal Models
• see video

21.04.2020, 18:20 Uhr, Nonlinear Algebra Seminar Online (NASO)

• Aida Maraj (University of Kentucky)
• The Equivariant Hilbert Series of Hierarchical Models
• see video

23.04.2020, 17:00 Uhr, Nonlinear Algebra Seminar Online (NASO)

• Michael Ruddy (MPI MIS, Leipzig)
• Equivalence classes of planar algebraic curves through numerical algebraic geometry
• see video

23.04.2020, 17:40 Uhr, Nonlinear Algebra Seminar Online (NASO)

• Laura Brustenga i Moncusi (University of Copenhagen)
• Reaction networks and toric systems
• see video

23.04.2020, 18:20 Uhr, Nonlinear Algebra Seminar Online (NASO)

• Taylor Brysiewicz (Texas A&M University)
• Solving Decomposable Sparse Systems
• see video

28.04.2020, 17:00 Uhr, Nonlinear Algebra Seminar Online (NASO)

• Joscha Diehl (Universität Greifswald)
• Time warping invariants and quasisymmetric functions
• see video

28.04.2020, 17:40 Uhr, Nonlinear Algebra Seminar Online (NASO)

• Arthur Bik (Universität Bern)
• Polynomial functors as affine spaces
• see video

28.04.2020, 18:20 Uhr, Nonlinear Algebra Seminar Online (NASO)

• Lukas Kühne (The Hebrew University of Jerusalem)
• Generalised Matroid Representations: Universality and Decidability
• see video

30.04.2020, 17:00 Uhr, Nonlinear Algebra Seminar Online (NASO)

• Sascha Timme (Technical University Berlin)
• 3264 Conics in a Second
• see video

30.04.2020, 17:40 Uhr, Nonlinear Algebra Seminar Online (NASO)

• Frank Sottile (Texas A&M University)
• Galois groups in Enumerative Geometry and Applications
• see video

30.04.2020, 18:20 Uhr, Nonlinear Algebra Seminar Online (NASO)

• Khazhgali Kozhasov (Technical University Braunschweig)
• On Minimality of Determinantal Varieties
• see video

12.05.2020, 17:00 Uhr, Nonlinear Algebra Seminar Online (NASO)

• Diane Maclagan (University of Warwick)
• Connectivity of tropical varieties

19.05.2020, 17:00 Uhr, Nonlinear Algebra Seminar Online (NASO)

• Joachim Jelisiejew (University of Warsaw)
• Additive group actions, formal solutions to PDEs and Bialynicki-Birula decomposition

26.05.2020, 17:00 Uhr, Nonlinear Algebra Seminar Online (NASO)

• Christian Ikenmeyer (University of Liverpool)
• Group varieties of polynomials and computational complexity

02.06.2020, 17:00 Uhr, Nonlinear Algebra Seminar Online (NASO)

• Tim Seynnaeve (MPI MIS, Leipzig)
• Complete quadrics and algebraic statistics
• see PDF Abstract
• see video

09.06.2020, 17:00 Uhr, Nonlinear Algebra Seminar Online (NASO)

• Alessandra Bernardi (Università di Trento)
• Algorithms for polynomial decompositions

16.06.2020, 17:00 Uhr, Nonlinear Algebra Seminar Online (NASO)

• Laurent Manivel (Paul Sabatier University)
• Orbital Degeneracy Loci

23.06.2020, 17:00 Uhr, Nonlinear Algebra Seminar Online (NASO)

• Amy Huang (Texas A&M University)
• Vanishing Hessian and Wild Polynomials

30.06.2020, 17:00 Uhr, Nonlinear Algebra Seminar Online (NASO)

• Henrik Eisenmann (MPI MIS, Leipzig)
• Using an alternating approach to solve two-parameter eigenvalue problems

17.07.2020, 14:00 Uhr, Seminar

• Mateusz Michalek (MPI MIS, Leipzig)
• Enumerative geometry of LSSM
• see video

20.07.2020, 17:00 Uhr, Mathematics of Data Seminar

• Franca Hoffmann (California Institute of Technology)
• Kalman-Wasserstein Gradient Flows

28.07.2020, 11:00 Uhr, Seminar on Nonlinear Algebra

• Benjamin Brück (University of Copenhagen)
• Persistent Homology in Gravitational Lensing

04.08.2020, 11:00 Uhr, Mathematics of Data Seminar

• Marco Mondelli (IST Austria)
• Understanding Gradient Descent for Over-parameterized Deep Neural Networks

04.08.2020, 17:00 Uhr, Nonlinear Algebra Seminar Online (NASO)

• Federico Castillo (MPI MIS, Leipzig)
• When are multidegrees positive?
• see slides

05.08.2020, 15:00 Uhr, Seminar

• Bernd Sturmfels (MPI MIS, Leipzig)
• Updates on LSSM

11.08.2020, 17:00 Uhr, Nonlinear Algebra Seminar Online (NASO)

• Gheorghe Craciun (University of Wisconsin-Madison)
• The algebra of reaction network models

18.08.2020, 11:00 Uhr, Seminar on Nonlinear Algebra

• Alexander Heaton (MPI MIS, Leipzig + TU Berlin)
• Minimality of tensors of fixed multilinear rank
• see video

18.08.2020, 12:00 Uhr, Seminar on Nonlinear Algebra

• Michael Joswig (TU Berlin + MPI MIS, Leipzig)
• The degree of a tropical basis
• see video

25.08.2020, 11:00 Uhr, Seminar on Nonlinear Algebra

• Leo Margolis (Vrije Universiteit Brussel)
• On the Modular Isomorphism Problem
• see PDF Abstract

02.09.2020, 11:00 Uhr, Special Seminar

• Joscha Diehl (Universität Greifswald)
• Convolutional neural networks for sequential data and tropical quasisymmetric functions

07.09.2020, 13:00 Uhr, Special Seminar

• Emre Sertöz (University of Hannover + MPI MIS, Leipzig)
• Topology of complex surfaces

08.09.2020, 11:00 Uhr, Seminar on Nonlinear Algebra

• Alexey Bufetov (Hausdorff Center for Mathematics, Universität Bonn, Germany)
• Random walks on Hecke algebras and interacting particle systems

08.09.2020, 15:00 Uhr, Nonlinear Algebra Seminar Online (NASO)

• Timo de Wolff (TU Braunschweig, Germany)
• New Dependencies of Hierarchies in Polynomial Optimization
• see PDF Abstract

15.09.2020, 11:00 Uhr, Seminar on Nonlinear Algebra

• Anna-Laura Sattelberger (MPI MIS, Leipzig)
• Algebraic tools for Topological Data Analysis

21.09.2020, 14:00 Uhr, Seminar on Nonlinear Algebra

• Alessandro Neri (Technical University of Munich)
• Linear algebra and Galois theory: the Alon-Füredi theorem for endomorphisms
• see PDF Abstract

22.09.2020, 11:00 Uhr, Seminar on Nonlinear Algebra

• Nina Holden (ETH Zurich, Switzerland / New York University, USA)
• Cardy embedding of random planar maps

30.09.2020, 13:00 Uhr, Seminar on Nonlinear Algebra

• Jonas Wahl (Hausdorff Center for Mathematics Bonn)
• Diagram algebras - what are they good for?

06.10.2020, 11:00 Uhr, Seminar on Nonlinear Algebra

• Hannah Markwig (Eberhard Karls Universität Tübingen)
• Counting bitangents of plane quartics - tropical, real and arithmetic

08.10.2020, 11:00 Uhr, Seminar on Nonlinear Algebra

• Thomas Kahle (Otto von Guericke University Magdeburg)
• Central limit theorems for permutation statistics

08.10.2020, 14:30 Uhr, Seminar on Linear Spaces of Symmetric Matrices

• Bernd Sturmfels (MPI MIS, Leipzig)
• Progress Reports by Multiple Speakers

13.10.2020, 17:00 Uhr, Nonlinear Algebra Seminar Online (NASO)

• Joel Ouaknine (MPI for Software Systems, Saarbrücken)
• Holonomic Techniques, Periods, and Decision Problems

27.10.2020, 17:00 Uhr, Nonlinear Algebra Seminar Online (NASO)

• Daniele Agostini (MPI MIS, Leipzig)
• The birational geometry of the moduli space of curves
• see video

27.10.2020, 17:45 Uhr, Nonlinear Algebra Seminar Online (NASO)

• Fatemeh Mohammadi (Ghent University)
• The Amplituhedron and Positive Geometries
• see video

03.11.2020, 17:00 Uhr, Nonlinear Algebra Seminar Online (NASO)

• Elina Robeva (University of British Columbia)
• Orthogonal decomposition of tensor trains
• see video

03.11.2020, 17:45 Uhr, Nonlinear Algebra Seminar Online (NASO)

• Simon Telen (MPI MIS, Leipzig)
• Polyhedral homotopies in Cox coordinates
• see video

04.11.2020, 17:00 Uhr, Mathematics of Data Seminar + Felix Klein Colloquium

• Stefan Hollands (Leipzig University)
• (In)determinism Inside Black Holes

17.11.2020, 17:00 Uhr, Nonlinear Algebra Seminar Online (NASO)

• Josephine Yu (Georgia Institute of Technology, Atlanta)
• Positively hyperbolic varieties, tropicalization, and positroids
• see video

17.11.2020, 17:45 Uhr, Nonlinear Algebra Seminar Online (NASO)

• Ezra Miller (Duke University, Durham)
• Non-integer multigraded algebra
• see video
• see slides

24.11.2020, 17:00 Uhr, Nonlinear Algebra Seminar Online (NASO)

• André Uschmajew (MPI MIS, Leipzig + Leipzig University)
• Gradient methods for sparse low-rank matrix recovery
• see video

24.11.2020, 17:45 Uhr, Nonlinear Algebra Seminar Online (NASO)

• Benjamin Schröter (KTH Stockholm)
• The tropical Grassmannian \(TGr_0(3,8)\), Dressian \(Dr(3,8)\), and their non-negative parts.
• see video
• see slides

01.12.2020, 17:00 Uhr, Nonlinear Algebra Seminar Online (NASO)

• Sandra Di Rocco (KTH Royal Institute of Technology)
• Geometry of data
• see video

01.12.2020, 17:45 Uhr, Nonlinear Algebra Seminar Online (NASO)

• Antonio Lerario (Scuola Internazionale Superiore di Studi Avanzati (SISSA), Triest)
• Moduli spaces of geometric graphs, real discriminants and Floer homology
• see video
• see slides

15.12.2020, 17:00 Uhr, Nonlinear Algebra Seminar Online (NASO)

• Seth Sullivant (North Carolina State University)
• Identifiability in phylogenetics using algebraic matroids
• see video

15.12.2020, 17:45 Uhr, Nonlinear Algebra Seminar Online (NASO)

• Ghislain Fourier (RWTH Aachen)
• Linear degenerations of flag varieties
• see video

22.12.2020, 17:00 Uhr, Nonlinear Algebra Seminar Online (NASO)

• Lauren Williams (Harvard University)
• The positive Dressian and the amplituhedron
• see video

22.12.2020, 17:45 Uhr, Nonlinear Algebra Seminar Online (NASO)

• Hanieh Keneshlou (MPI MIS, Leipzig)
• On the construction of regular maps to Grassmannians
• see video