Seminar, Combinatorics

Jonathan Leake: Transportation polytope volume bounds via polynomial capacity and Lorentzian polynomials

19 May

Seminar, Combinatorics

Wednesday 2021-05-19, 15:15 - 16:15

Participating: Jonathan Leake (TU Berlin)

Location: Zoom meeting ID: 654 5562 3260

2021-05-19T15:15:00.000+02:00 2021-05-19T16:15:00.000+02:00 Jonathan Leake: Transportation polytope volume bounds via polynomial capacity and Lorentzian polynomials (Seminar, Combinatorics) Zoom meeting ID: 654 5562 3260 (KTH, Stockholm, Sweden)Jonathan Leake: Transportation polytope volume bounds via polynomial capacity and Lorentzian polynomials (Seminar, Combinatorics)

Eleni Tzanaki: Symmetric decompositions, triangulations and real-rootedness

26 May

Seminar, Combinatorics

Wednesday 2021-05-26, 10:15 - 11:15

Participating: Eleni Tzanaki (University of Crete)

Location: Zoom meeting ID: 654 5562 3260

2021-05-26T10:15:00.000+02:00 2021-05-26T11:15:00.000+02:00 Eleni Tzanaki: Symmetric decompositions, triangulations and real-rootedness (Seminar, Combinatorics) Zoom meeting ID: 654 5562 3260 (KTH, Stockholm, Sweden)Eleni Tzanaki: Symmetric decompositions, triangulations and real-rootedness (Seminar, Combinatorics)

Emanuele Delucchi: Supersolvable posets and the K(\pi,1) property for Abelian arrangements.

9 Jun

Seminar, Combinatorics

Wednesday 2021-06-09, 10:15 - 11:15

Participating: Emanuele Delucchi (IDSIA-SUPSI e Università di Pisa)

Location: Zoom, meeting ID: 654 5562 3260

2021-06-09T10:15:00.000+02:00 2021-06-09T11:15:00.000+02:00 Emanuele Delucchi: Supersolvable posets and the K(\pi,1) property for Abelian arrangements. (Seminar, Combinatorics) Zoom, meeting ID: 654 5562 3260 (KTH, Stockholm, Sweden)Emanuele Delucchi: Supersolvable posets and the K(\pi,1) property for Abelian arrangements. (Seminar, Combinatorics)

Luis Ferroni: Matroids are not Ehrhart positive

16 Jun

Seminar, Combinatorics

Wednesday 2021-06-16, 10:15 - 11:15

Participating: Luis Ferroni (Università di Bologna)

Location: Zoom meeting ID: 654 5562 3260

2021-06-16T10:15:00.000+02:00 2021-06-16T11:15:00.000+02:00 Luis Ferroni: Matroids are not Ehrhart positive (Seminar, Combinatorics) Zoom meeting ID: 654 5562 3260 (KTH, Stockholm, Sweden)Luis Ferroni: Matroids are not Ehrhart positive (Seminar, Combinatorics)

Alexander Lazar: q-Enumeration of Barely Set-Valued Tableaux and P-Partitions

23 Jun

Seminar, Combinatorics

Wednesday 2021-06-23, 10:15 - 11:15

Participating: Alexander Lazar (KTH)

Location: Zoom meeting ID: 654 5562 3260

2021-06-23T10:15:00.000+02:00 2021-06-23T11:15:00.000+02:00 Alexander Lazar: q-Enumeration of Barely Set-Valued Tableaux and P-Partitions (Seminar, Combinatorics) Zoom meeting ID: 654 5562 3260 (KTH, Stockholm, Sweden)Alexander Lazar: q-Enumeration of Barely Set-Valued Tableaux and P-Partitions (Seminar, Combinatorics)

Chris Eur:Tautological classes of matroids

1 Sep

Seminar, Combinatorics

Wednesday 2021-09-01, 15:15 - 16:15

Participating: Chris Eur (Harvard University)

Location: Zoom meeting ID: 654 5562 3260

2021-09-01T15:15:00.000+02:00 2021-09-01T16:15:00.000+02:00 Chris Eur:Tautological classes of matroids (Seminar, Combinatorics) Zoom meeting ID: 654 5562 3260 (KTH, Stockholm, Sweden)Chris Eur:Tautological classes of matroids (Seminar, Combinatorics)

Mariel Supina:Equivariant Ehrhart theory: Overview and recent results

8 Sep

Seminar, Combinatorics

Wednesday 2021-09-08, 10:15 - 11:15

Location: Zoom meeting ID: 654 5562 3260

2021-09-08T10:15:00.000+02:00 2021-09-08T11:15:00.000+02:00 Mariel Supina:Equivariant Ehrhart theory: Overview and recent results (Seminar, Combinatorics) Zoom meeting ID: 654 5562 3260 (KTH, Stockholm, Sweden)Mariel Supina:Equivariant Ehrhart theory: Overview and recent results (Seminar, Combinatorics)

Akihiro Higashitani:Universal inequalities for h*-vectors of lattice polytopes

15 Sep

Seminar, Combinatorics

Wednesday 2021-09-15, 10:15 - 11:15

Location: Zoom meeting ID: 654 5562 3260

2021-09-15T10:15:00.000+02:00 2021-09-15T11:15:00.000+02:00 Akihiro Higashitani:Universal inequalities for h*-vectors of lattice polytopes (Seminar, Combinatorics) Zoom meeting ID: 654 5562 3260 (KTH, Stockholm, Sweden)Akihiro Higashitani:Universal inequalities for h*-vectors of lattice polytopes (Seminar, Combinatorics)

Peter J. Cameron:The geometry of diagonal groups

22 Sep

Seminar, Combinatorics

Wednesday 2021-09-22, 10:15 - 11:15

Participating: Peter J. Cameron (University of St Andrews)

Location: Zoom meeting ID: 654 5562 3260

2021-09-22T10:15:00.000+02:00 2021-09-22T11:15:00.000+02:00 Peter J. Cameron:The geometry of diagonal groups (Seminar, Combinatorics) Zoom meeting ID: 654 5562 3260 (KTH, Stockholm, Sweden)Peter J. Cameron:The geometry of diagonal groups (Seminar, Combinatorics)

Eva Philippe:Sweep polytopes and sweep oriented matroids

29 Sep

Seminar, Combinatorics

Wednesday 2021-09-29, 10:15 - 11:15

Participating: Eva Philippe (Sorbonne Université)

Location: Zoom meeting ID: 654 5562 3260

2021-09-29T10:15:00.000+02:00 2021-09-29T11:15:00.000+02:00 Eva Philippe:Sweep polytopes and sweep oriented matroids (Seminar, Combinatorics) Zoom meeting ID: 654 5562 3260 (KTH, Stockholm, Sweden)Eva Philippe:Sweep polytopes and sweep oriented matroids (Seminar, Combinatorics)

Richard Stanley: Two Analogues of Pascal's Triangle

6 Oct

Seminar, Combinatorics

Wednesday 2021-10-06, 15:15 - 16:15

Participating: Richard Stanley (M.I.T. and University of Miami)

Location: Zoom meeting ID: 654 5562 3260

2021-10-06T15:15:00.000+02:00 2021-10-06T16:15:00.000+02:00 Richard Stanley: Two Analogues of Pascal's Triangle (Seminar, Combinatorics) Zoom meeting ID: 654 5562 3260 (KTH, Stockholm, Sweden)Richard Stanley: Two Analogues of Pascal's Triangle (Seminar, Combinatorics)

Lukas Kühne: Matroids and Algebra

13 Oct

Seminar, Combinatorics

Wednesday 2021-10-13, 10:15 - 11:15

Participating: Lukas Kühne (Max Planck Institute of Mathematics in the Sciences, Leipzig)

Location: Zoom meeting ID: 654 5562 3260

2021-10-13T10:15:00.000+02:00 2021-10-13T11:15:00.000+02:00 Lukas Kühne: Matroids and Algebra (Seminar, Combinatorics) Zoom meeting ID: 654 5562 3260 (KTH, Stockholm, Sweden)Lukas Kühne: Matroids and Algebra (Seminar, Combinatorics)

Luis Ferroni:Valuative invariants for large classes of matroids

20 Oct

Seminar, Combinatorics

Wednesday 2021-10-20, 10:15 - 11:15

Participating: Luis Ferroni (Università di Bologna)

Location: Zoom meeting ID: 654 5562 3260

2021-10-20T10:15:00.000+02:00 2021-10-20T11:15:00.000+02:00 Luis Ferroni:Valuative invariants for large classes of matroids (Seminar, Combinatorics) Zoom meeting ID: 654 5562 3260 (KTH, Stockholm, Sweden)Luis Ferroni:Valuative invariants for large classes of matroids (Seminar, Combinatorics)

Hailun Zheng: Techniques in constructing neighborly polytopes and spheres

27 Oct

Seminar, Combinatorics

Wednesday 2021-10-27, 10:15 - 11:15

Participating: Hailun Zheng (University of Copenhagen)

Location: Zoom meeting ID: 654 5562 3260

2021-10-27T10:15:00.000+02:00 2021-10-27T11:15:00.000+02:00 Hailun Zheng: Techniques in constructing neighborly polytopes and spheres (Seminar, Combinatorics) Zoom meeting ID: 654 5562 3260 (KTH, Stockholm, Sweden)Hailun Zheng: Techniques in constructing neighborly polytopes and spheres (Seminar, Combinatorics)

Daniel Köhne: Laplacian Polytopes of Oriented Simplicial Complexes

3 Nov

Seminar, Combinatorics

Wednesday 2021-11-03, 10:15 - 11:15

Participating: Daniel Köhne (Universität Osnabrück)

Location: Zoom meeting ID: 654 5562 3260

2021-11-03T10:15:00.000+01:00 2021-11-03T11:15:00.000+01:00 Daniel Köhne: Laplacian Polytopes of Oriented Simplicial Complexes (Seminar, Combinatorics) Zoom meeting ID: 654 5562 3260 (KTH, Stockholm, Sweden)Daniel Köhne: Laplacian Polytopes of Oriented Simplicial Complexes (Seminar, Combinatorics)

Jorge Olarte: The tropical symplectic Grassmannian

10 Nov

Seminar, Combinatorics

Wednesday 2021-11-10, 10:15 - 11:15

Participating: Jorge Olarte (TU Berlin)

Location: Zoom meeting ID: 654 5562 3260

2021-11-10T10:15:00.000+01:00 2021-11-10T11:15:00.000+01:00 Jorge Olarte: The tropical symplectic Grassmannian (Seminar, Combinatorics) Zoom meeting ID: 654 5562 3260 (KTH, Stockholm, Sweden)Jorge Olarte: The tropical symplectic Grassmannian (Seminar, Combinatorics)

Bin Han: On the gamma-positivity of binomial Eulerian polynomials for colored permutations

17 Nov

Seminar, Combinatorics

Wednesday 2021-11-17, 10:15 - 11:15

Participating: Bin Han (KTH)

Location: Zoom meeting ID: 654 5562 3260

2021-11-17T10:15:00.000+01:00 2021-11-17T11:15:00.000+01:00 Bin Han: On the gamma-positivity of binomial Eulerian polynomials for colored permutations (Seminar, Combinatorics) Zoom meeting ID: 654 5562 3260 (KTH, Stockholm, Sweden)Bin Han: On the gamma-positivity of binomial Eulerian polynomials for colored permutations (Seminar, Combinatorics)

Galen Dorpalen-Barry: Varchenko-Gel’fand Ring of a "Cone" of a Hyperplane Arrangement

24 Nov

Seminar, Combinatorics

Wednesday 2021-11-24, 10:15 - 11:15

Participating: Galen Dorpalen-Barry (Ruhr-Universität Bochum)

Location: Zoom meeting ID: 654 5562 3260

2021-11-24T10:15:00.000+01:00 2021-11-24T11:15:00.000+01:00 Galen Dorpalen-Barry: Varchenko-Gel’fand Ring of a "Cone" of a Hyperplane Arrangement (Seminar, Combinatorics) Zoom meeting ID: 654 5562 3260 (KTH, Stockholm, Sweden)Galen Dorpalen-Barry: Varchenko-Gel’fand Ring of a "Cone" of a Hyperplane Arrangement (Seminar, Combinatorics)

Marta Pavelka: 2-LC triangulated manifolds are exponentially many

1 Dec

Seminar, Combinatorics

Wednesday 2021-12-01, 15:15 - 16:15

Participating: Marta Pavelka (University of Miami)

Location: Zoom meeting ID: 654 5562 3260

2021-12-01T15:15:00.000+01:00 2021-12-01T16:15:00.000+01:00 Marta Pavelka: 2-LC triangulated manifolds are exponentially many (Seminar, Combinatorics) Zoom meeting ID: 654 5562 3260 (KTH, Stockholm, Sweden)Marta Pavelka: 2-LC triangulated manifolds are exponentially many (Seminar, Combinatorics)