Akiyoshi Tsuchiya

Interactions between commutative algebra and graph coloring theory

February 12, Computational Interactions between Algebra, Combinatorics, and Discrete Geometry
UCLA, IPAM (Los Angeles, USA)

Codegree of stable set polytopes

June 26, Computational Geometry Week, Workshop: Computational Polyhedral Geometry
Hotel Kanazawa (Ishikawa, Japan)

Nef-partitions arising from two poset polytopes and unimodular configurations

September 11, Deepening and Applications of Computational Algebraic Geometry via Gröbner bases
Kyoto University (Kyoto, Japan)

Examining Kempe equivalence via commutative algebra

February 29, Seminar on Nonlinear Algebra
Max Planck Institute for Mathematics in the Sciences (Leipzig, Germany)

Sectional genus of Ehrhart rings and Castelnuovo polytopes

February 6, One day workshop on Commutative Algebra
Waseda University (Tokyo, Japan)

Perfectly contractile graphs and quadratic toric rings

March 28--30, The 11th Japan-Vietnam Joint seminar on Commutative Algebra
Institute of Mathematics, Hanoi (Hanoi, Vietnam)

Algebraic combinatorics on symmetric edge polytopes

August 16--18, Hypergeometric School 2023
Kobe University (Hyogo, Japan)

Ehrhart theory on adjacency polytopes

March 3--4, Mini-Symposium on Lattice Polytopes
Online

Ehrhart theory of locally anti-blocking lattice polytopes

January 29, 12th polymake conference
Technische Universität Berlin (Online)

Castelnuovo polytopes

April 6--9, (Polytop)ics: Recent advances on polytopes
Max Planck Institute for Mathematics in the Sciences (Online)

Canonical triangulations of enriched order polytopes

June 14--15, AlCoVE: an Algebraic Combinatorics Virtual Expedition
Online

Two enriched poset polytopes

December 10, Oberseminar DIGO: Diskrete Mathematik, Geometrie und Optimierung
Goethe-Universität Frankfurt (Frankfurt, Germany)

Two enriched poset polytopes

November 18--21, Toric Topology 2019 in Okayama
Okayama University of Science (Okayama, Japan)

Locally anti-blocking lattice polytopes and their h*-polynomials

October 28--November 1, Commutative Algebra and Lattice Polytopes
RIMS (Kyoto, Japan)

Ehrhart theory and interior polynomials

July 22--26, Recent advances in matroids and Tutte polynomials
Hokkaido University (Hokkaido, Japan)

Normal Gorenstein Fano polytopes arising from perfect graphs

January 10--13, Joint Mathematics Meetings, AMS Special Session on Combinatorial Commutative Algebra and Polytopes
San Diego Convention Center (California, USA)

The reflexive dimension of a (0,1)-polytope

February 7, Seminar, Combinatorics
KTH Royal Institute of Technology in Stockholm (Stockholm, Sweden)

Reflexive polytopes arising from edge polytopes

May 20--24, The Japanese Conference of Combinatorics and its Applications (JCCA2018)
Sendai International Center (Miyagi, Japan)

Cayley sums and Minkowski sums of 2-convex-normal lattice polytopes

July 30--August 3, Algebraic and Geometric Combinatorics on Lattice Polytopes
Osaka University (Osaka, Japan)

Polyhedral characterizations of perfect graphs

October 22, Facets of Complexity Seminar
Technische Universität Berlin (Berlin, Germany)

Reflexive polytopes arising from (0,1)-polytopes

October 24, Forschungsseminar Fachgebiet Diskrete Mathematik und Geometrie
Technische Universität Berlin (Berlin, Germany)

Gorenstein simplices and the associated finite abelian groups

January 16--20, Algebraic and Geometric Combinatorics on Convex Polytopes
Osaka University (Osaka, Japan)

Gorenstein simplices and the associated finite abelian groups

February 8, Forschungsseminar Fachgebiet Diskrete Mathematik und Geometrie
Technische Universität Berlin (Berlin, Germany)

Gorenstein simplices and the associated finite abelian groups

February 14, Oberseminar Diskrete, Konvexe und Torische Geometrie
Otto-von-Guericke-University Magdeburg (Magdeburg, Germany)

Gorenstein simplices with a given δ-polynomial

September 14--16, Interactions with Lattice Polytopes
Otto-von-Guericke-University Magdeburg (Magdeburg, Germany)

Normality and levelness of Cayley sums

November 12--13, Berlin-Leipzig Seminar on Algebra, Geometry and Combinatorics
Freie Universität Berlin (Berlin, Germany)

Negative coefficients of Ehrhart polynomials

January 19, Discrete CATS Seminar
University of Kentucky (Kentucky, USA)

The possible sign patterns of the coefficients of Ehrhart polynomials

February 1, Seminar Algebra & Discrete Mathematics
University of California, Davis (California, USA)

Volume of Gorenstein Fano polytopes arising from order polytopes and chain polytopes

May 21--25, The Japanese Conference of Combinatorics and its Applications (JCCA2016)
Kyoto University (Kyoto, Japan)

Gorenstein Fano polytopes arising from two poset polytopes

August 1--5, Computational Commutative Algebra and Convex Polytopes
RIMS (Kyoto, Japan)

Gorenstein Fano polytopes arising from order polytopes and chain polytopes

October 31--November 3, Binomial Ideals and Algebraic Statistics
Kyoto Seminar House (Kyoto, Japan)

Best possible lower bounds on the coefficients of Ehrhart polynomials

July 1--10, Current Trends on Gröbner Bases - The 50th Anniversary of Gröbner Bases
Hotel Nikko Osaka (Osaka, Japan)

Negative coefficients of Ehrhart polynomials

August 25
Chonnam National University (Gwangju, Korea)

Best possible lower bounds on the coefficients of Ehrhart polynomials

October 7--10, Combinatorial and Experimental Methods in Commutative Algebra and Related Fields
University of Osnabrück (Osnabrück, Germany)