19.01.2021, 17:00 Uhr, Nonlinear Algebra Seminar Online (NASO)

• Marvin Anas Hahn (MPI MiS, Leipzig)
• Mustafin degenerations: Between applied and arithmetic geometry
• see video

19.01.2021, 17:45 Uhr, Nonlinear Algebra Seminar Online (NASO)

• Christopher Manon (University of Kentucky)
• When is a (projectivized) toric vector bundle a Mori dream space?
• see video

26.01.2021, 17:00 Uhr, Nonlinear Algebra Seminar Online (NASO)

• Jan Draisma (University of Bern)
• Algebra over FI
• see video

26.01.2021, 17:45 Uhr, Nonlinear Algebra Seminar Online (NASO)

• Christian Schilling (Ludwig-Maximilians-Universität München)
• Generalization of Pauli’s exclusion principle via convex geometry
• see video

02.02.2021, 17:00 Uhr, Nonlinear Algebra Seminar Online (NASO)

• Rosa Winter (MPI MiS, Leipzig)
• Linear spaces of symmetric matrices with non-maximal maximum likelihood degree
• see video

02.02.2021, 17:45 Uhr, Nonlinear Algebra Seminar Online (NASO)

• Juliette Bruce (University of California, Berkeley)
• The top weight cohomology of \(A_g\)
• see video

16.02.2021, 17:00 Uhr, Nonlinear Algebra Seminar Online (NASO)

• Luca Sodomaco (Aalto University)
• Asymptotics of degrees and ED degrees of Segre products
• see video

16.02.2021, 17:45 Uhr, Nonlinear Algebra Seminar Online (NASO)

• Elizabeth Gross (University of Hawai`i at Mānoa)
• When do two networks have the same steady-state ideal?
• see video

23.02.2021, 17:00 Uhr, Nonlinear Algebra Seminar Online (NASO)

• Aldo Conca (Università di Genova)
• Resolution of ideals associated to subspace arrangements
• see video

23.02.2021, 17:45 Uhr, Nonlinear Algebra Seminar Online (NASO)

• Mauricio Velasco (Universidad de los Andes, Bogotá)
• The geometry of SOS-multipliers on varieties
• see video

02.03.2021, 17:00 Uhr, Nonlinear Algebra Seminar Online (NASO)

• Gleb Pogudin (École polytechnique Paris)
• How many experiments?
• see video

02.03.2021, 17:45 Uhr, Nonlinear Algebra Seminar Online (NASO)

• Alicia Dickenstein (Universidad de Buenos Aires)
• Optimal Descartes rule of signs for polynomial systems supported on circuits
• see video

16.03.2021, 17:00 Uhr, Nonlinear Algebra Seminar Online (NASO)

• Liam Solus (KTH Royal Institute of Technology)
• Some recent developments on the geometry of causation
• see video

16.03.2021, 17:45 Uhr, Nonlinear Algebra Seminar Online (NASO)

• Lisa Nicklasson (MPI MiS, Leipzig)
• Toric ideals of polymatroids and White’s conjecture
• see video

24.03.2021, 17:00 Uhr, Colloquium of the Max Planck Institute

• Mina Aganagic (University of California, Berkeley, Berkeley Center for Theoretical Physics)
• Quantum Geometric Representation Theory

30.03.2021, 17:00 Uhr, Nonlinear Algebra Seminar Online (NASO)

• Georg Regensburger (Johannes Kepler Universität Linz)
• Positive solutions of generalized polynomial systems with real exponents and chemical reaction networks
• see video

30.03.2021, 17:45 Uhr, Nonlinear Algebra Seminar Online (NASO)

• Jonas Hirsch (Leipzig University)
• Real varieties and measure-valued solutions to PDEs
• see video

22.04.2021, 15:15 Uhr, Leipzig seminar on Algebra, Algebraic Geometry and Algebraic Topology

• Pedro Tamaroff (MPI MiS, Leipzig)
• The Diamond Lemma through homotopical algebra

29.04.2021, 15:15 Uhr, Leipzig seminar on Algebra, Algebraic Geometry and Algebraic Topology

• Giulio Codogni (Università di Roma "Tor Vergata")
• Characterizing Jacobians via the KP equation and via flexes and degenerate trisecants to the Kummer variety: an algebro-geometric approach

12.05.2021, 15:15 Uhr, Leipzig seminar on Algebra, Algebraic Geometry and Algebraic Topology

• Alexey Kalugin (University of Luxembourg)
• The cohomology of moduli stacks of curves \(\mathcal M_g\) and the diamond ribbon graph complex

26.05.2021, 15:15 Uhr, Leipzig seminar on Algebra, Algebraic Geometry and Algebraic Topology

• Mario Kummer (Technische Universität Dresden)
• Determinantal representations, sums of squares and del Pezzo surfaces

04.06.2021, 10:00 Uhr, Seminar on Nonlinear Algebra

• Daniele Agostini (MPI MiS, Leipzig)
• Algebraic Theta Functions and Rational Solutions to the KP Equation

04.06.2021, 11:00 Uhr, Seminar on Nonlinear Algebra

• Lisa Nicklasson (MPI MiS, Leipzig)
• Staged Tree Models with Toric Structures

08.06.2021, 10:00 Uhr, Seminar on Nonlinear Algebra

• Taylor Brysiewicz (MPI MiS, Leipzig)
• Enumerating Chambers in Hyperplane Arrangements with Symmetry

08.06.2021, 11:00 Uhr, Seminar on Nonlinear Algebra

• Federico Castillo (MPI MiS, Leipzig)
• Generalized Exclusion Principles

09.06.2021, 12:00 Uhr, Emmy Noether Seminar

• Chiara Meroni (MPI MiS, Leipzig)
• Fiber bodies

10.06.2021, 15:15 Uhr, Leipzig seminar on Algebra, Algebraic Geometry and Algebraic Topology

• Davide Lombardo (Università di Pisa)
• Some results in the Kummer theory of commutative algebraic groups

11.06.2021, 10:00 Uhr, Seminar on Nonlinear Algebra

• Rainer Sinn (University of Leipzig)
• Families of Faces and the Normal Cycle

11.06.2021, 11:00 Uhr, Seminar on Nonlinear Algebra

• Marc Härkönen (Georgia Institute of Technology, Atlanta)
• Linear PDE with Constant Coefficients

15.06.2021, 10:00 Uhr, Seminar on Nonlinear Algebra

• Fulvio Gesmundo (MPI MiS, Leipzig)
• Tensor network methods for computing the spectral norm of symmetric tensors

15.06.2021, 11:00 Uhr, Seminar on Nonlinear Algebra

• Marvin Anas Hahn (MPI MiS, Leipzig)
• Orders, polytropes and Bruhat-Tits buildings

17.06.2021, 15:15 Uhr, Leipzig seminar on Algebra, Algebraic Geometry and Algebraic Topology

• Kristin Shaw (Universitetet i Oslo)
• Real phase structures on matroid fans

18.06.2021, 10:00 Uhr, Seminar on Nonlinear Algebra

• Henrik Eisenmann (MPI MiS, Leipzig)
• Definite multiparameter eigenvalue problems and an alternating approach to solve them

18.06.2021, 11:00 Uhr, Seminar on Nonlinear Algebra

• Marie-Charlotte Brandenburg (MPI MiS, Leipzig)
• The positive tropicalization of rank 2 matrices

22.06.2021, 10:00 Uhr, Seminar on Nonlinear Algebra

• Martin Vodicka (MPI MiS, Leipzig)
• Geometry of Gaussian graphical model for the cycle

22.06.2021, 11:00 Uhr, Seminar on Nonlinear Algebra

• Rosa Winter
• Recovery from power sums

25.06.2021, 10:00 Uhr, Seminar on Nonlinear Algebra

• Isabelle Shankar (MPI MiS, Leipzig)
• Symmetry Adapted Gram Spectrahedra

25.06.2021, 11:00 Uhr, Seminar on Nonlinear Algebra

• Leonid Monin (MPI MiS, Leipzig)
• Macaulay inverse systems and computation of cohomology rings

29.06.2021, 10:00 Uhr, Seminar on Nonlinear Algebra

• Alessandro Neri (MPI MiS, Leipzig)
• Matrices with restricted entries, skew polynomials and coding theory

29.06.2021, 11:00 Uhr, Seminar on Nonlinear Algebra

• Anna-Laura Sattelberger (MPI MiS, Leipzig)
• How does an algebraic geometer interpret Taylor series?

02.07.2021, 10:00 Uhr, Seminar on Nonlinear Algebra

• Thomas Kahle (Otto von Guericke University Magdeburg)
• The geometry of Gaussian double Markovian distributions

02.07.2021, 11:00 Uhr, Seminar on Nonlinear Algebra

• Charles Wang (Harvard University)
• Commuting Differential Operators and Spectral Curves

09.07.2021, 10:00 Uhr, Seminar on Nonlinear Algebra

• Pedro Tamaroff (MPI MiS, Leipzig)
• Minimal models for monomial algebras

09.07.2021, 11:00 Uhr, Seminar on Nonlinear Algebra

• Samantha Fairchild (MPI MiS, Leipzig)
• Counting social interactions for discrete subsets of the plane

15.07.2021, 15:15 Uhr, Leipzig seminar on Algebra, Algebraic Geometry and Algebraic Topology

• Felix Otto (MPI MiS, Leipzig)
• The structure group in regularity structures: replacing combinatorics of trees by Lie geometry

16.07.2021, 10:00 Uhr, Seminar on Nonlinear Algebra

• Aida Maraj (MPI MiS, Leipzig)
• Toric ideals in polynomial rings in infinitely many variables: stabilization and other properties

16.07.2021, 11:00 Uhr, Seminar on Nonlinear Algebra

• Mara Belotti (Berlin Mathematical School)
• Algebraic degrees of 3-dimensional polytopes

23.07.2021, 10:00 Uhr, Seminar on Nonlinear Algebra

• Yelena Mandelshtam (University of California, Berkeley)
• Hirota varieties

23.07.2021, 11:00 Uhr, Seminar on Nonlinear Algebra

• Roser Homs Pons (Technische Universität München)
• Third Order Moment Varieties of Non-Gaussian Graphical Models

30.07.2021, 10:00 Uhr, Seminar on Nonlinear Algebra

• Büşra Sert (TU Dresden)
• Spectrahedral representability and Matroids

30.07.2021, 11:00 Uhr, Seminar on Nonlinear Algebra

• Christoph Schulze (TU Dresden)
• Cones of locally non-negative polynomials

02.08.2021, 10:00 Uhr, Emmy Noether Seminar

• Paul Breiding (MPI MiS, Leipzig)
• The Zonoid Algebra, Mixed Volumes and Random Determinants (Part 1)

03.08.2021, 14:00 Uhr, Emmy Noether Seminar

• Paul Breiding (MPI MiS, Leipzig)
• The Zonoid Algebra, Mixed Volumes and Random Determinants (Part 2)

04.08.2021, 10:15 Uhr, Special Seminar

• Speakers: see abstract
• Oscar, MATHREPO and Nonlinear Algebra

05.08.2021, 15:15 Uhr, Leipzig seminar on Algebra, Algebraic Geometry and Algebraic Topology

• Jenia Tevlev (University of Massachusetts Amherst)
• Scattering amplitudes of stable curves

06.08.2021, 10:00 Uhr, Seminar on Nonlinear Algebra

• Philipp Reichenbach (TU Berlin)
• Barriers for Scaling Algorithms in Invariant Theory

06.08.2021, 11:00 Uhr, Seminar on Nonlinear Algebra

• Mahmut Levent Doğan (TU Berlin)
• Polynomial Time Algorithms in Invariant Theory for Torus Actions

09.08.2021, 10:00 Uhr, Numerical Algebra and Optimization Seminar

• Venkat Chandrasekaran (California Institute of Technology, Pasadena)
• Fitting Convex Sets to Data

13.08.2021, 10:00 Uhr, Seminar on Nonlinear Algebra

• Arthur Bik (MPI MiS, Leipzig)
• Strength of polynomials

13.08.2021, 11:00 Uhr, Seminar on Nonlinear Algebra

• Matías Bender (TU Berlin)
• Koszul-type determinantal formulas for families of mixed multilinear systems

16.08.2021, 14:00 Uhr, Numerical Algebra and Optimization Seminar

• Guido Montufar (MPI MiS, Leipzig + University of California, LA)
• Geometry of Linear Convolutional Networks

25.08.2021, 14:00 Uhr, Numerical Algebra and Optimization Seminar

• Max Pfeffer (TU Chemnitz)
• Constrained Matrix and Tensor Factorizations

30.08.2021, 14:00 Uhr, Numerical Algebra and Optimization Seminar

• Dogyoon Song (Massachusetts Institute of Technology)
• On Approximating Positive Semidefinite Cone Using Small-sized PSD Constraints

06.09.2021, 14:00 Uhr, Numerical Algebra and Optimization Seminar

• Sebastian Neumayer (TU Berlin)
• Invertible Neural Networks for Inverse Problems

09.09.2021, 14:00 Uhr, Seminar on Nonlinear Algebra

• Rainer Sinn (Universität Leipzig)
• Adjoints and Canonical Forms of Polypols. I

09.09.2021, 14:45 Uhr, Seminar on Nonlinear Algebra

• Simon Telen (MPI MiS, Leipzig)
• Adjoints and Canonical Forms of Polypols. II

13.09.2021, 14:00 Uhr, Numerical Algebra and Optimization Seminar

• Russell Luke (Georg-August-Universität Göttingen)
• Structured (In)Feasibility: Nonmonotone Operator Splitting in Nonlinear Spaces

16.09.2021, 14:00 Uhr, Seminar on Nonlinear Algebra

• Maria Yakerson (ETH Zürich)
• The beauty of the beast: Hilbert scheme of infinite affine space

17.09.2021, 10:30 Uhr, Special Seminar

• Michael Joswig (TU Berlin + MPI MiS, Leipzig)
• Bernd Sturmfels (MPI MiS, Leipzig)
• Math, Data and Life

27.09.2021, 14:00 Uhr, Numerical Algebra and Optimization Seminar

• Johannes Maly (Katholische Universität Eichstätt-Ingolstadt)
• Robust Sensing of Low-Rank Matrices with Non-Orthogonal Sparse Decomposition

30.09.2021, 14:00 Uhr, Seminar on Nonlinear Algebra

• Bernd Sturmfels (MPI MiS, Leipzig)
• Linear PDE with Constant Coefficients

30.09.2021, 14:45 Uhr, Seminar on Nonlinear Algebra

• Bogdan Raita (MPI MiS, Leipzig)
• Syzygies of non-constant rank operators

04.10.2021, 14:00 Uhr, Numerical Algebra and Optimization Seminar

• Myfanwy Evans (Universität Potsdam)
• Packings, frameworks and tensegrity structures

06.10.2021, 15:15 Uhr, Leipzig seminar on Algebra, Algebraic Geometry and Algebraic Topology

• Noémie Combe (MPI MiS, Leipzig)
• Exponential families and Frobenius Manifolds

07.10.2021, 14:00 Uhr, Seminar on Nonlinear Algebra

• Chiara Meroni (MPI MiS, Leipzig)
• Discotopes

07.10.2021, 14:45 Uhr, Seminar on Nonlinear Algebra

• Claudia Fevola (MPI MiS, Leipzig)
• The enumerative geometry of cubic hypersurfaces: point and line conditions

11.10.2021, 14:00 Uhr, Numerical Algebra and Optimization Seminar

• Melina Freitag (Universität Potsdam)
• Optimisation and numerical linear algebra in data assimilation

14.10.2021, 14:00 Uhr, Seminar on Nonlinear Algebra

• Marina Garrote-López (MPI MiS, Leipzig)
• Algebraic and semi-algebraic phylogenetic reconstruction

14.10.2021, 14:45 Uhr, Seminar on Nonlinear Algebra

• Tobias Boege (MPI MiS, Leipzig)
• The Gaussian conditional independence inference problem

18.10.2021, 14:00 Uhr, Numerical Algebra and Optimization Seminar

• Rainer Sinn (Universität Leipzig)
• Chirality in Computer Vision

21.10.2021, 14:00 Uhr, Seminar on Nonlinear Algebra

• Enis Kaya (MPI MiS, Leipzig)
• p-adic Integration on Hyperelliptic Curves of Bad Reduction

21.10.2021, 14:45 Uhr, Seminar on Nonlinear Algebra

• Eliana Duarte (Centro de Matemática de la Universidade do Porto)
• Families of polytopes with rational linear precision in higher dimensions

25.10.2021, 14:00 Uhr, Numerical Algebra and Optimization Seminar

• Sylvain Spitz (TU Berlin)
• Generalized Permutahedra and Optimal Auctions

28.10.2021, 14:00 Uhr, Seminar on Nonlinear Algebra

• Irem Portakal (MPI MiS, Leipzig)
• Graphs and toric varieties

28.10.2021, 14:45 Uhr, Seminar on Nonlinear Algebra

• Emre Sertöz (Leibniz University Hannover)
• Heights, periods, and arithmetic on curves

01.11.2021, 16:00 Uhr, Special Seminar

• Leonie Mühlherr (Universität Marburg)
• On the geometry of log-concave density estimation

05.11.2021, 10:30 Uhr, Special Seminar

• Speakers: see abstract
• MathRepo: how to handle your research data

11.11.2021, 14:00 Uhr, Seminar on Nonlinear Algebra

• Max Pfeffer (TU Chemnitz + MPI MiS, Leipzig)
• The cone of 5 by 5 completely positive matrices

11.11.2021, 14:45 Uhr, Seminar on Nonlinear Algebra

• Mareike Dressler (MPI MiS, Leipzig)
• Welcome to the World of SONCs

18.11.2021, 14:00 Uhr, Seminar on Nonlinear Algebra

• Marie-Charlotte Brandenburg (MPI MiS, Leipzig)
• Intersection Bodies of Polytopes

18.11.2021, 14:45 Uhr, Seminar on Nonlinear Algebra

• Rida Ait El Manssour
• Multiplicity of the fat point in differential algebra

24.11.2021, 15:15 Uhr, Leipzig seminar on Algebra, Algebraic Geometry and Algebraic Topology

• Christian Lehn (TU Chemnitz)
• Compact Moduli Spaces of K3 Surfaces coming from Mirror Symmetry

06.12.2021, 11:00 Uhr, Numerical Algebra and Optimization Seminar

• Nick Dewaele (KU Leuven)
• Computing the condition number of tensor decompositions through Tucker compression