Combinatorics Seminar 2018


Most of the fundamental ideas of science are essentially simple, and may, as a rule, be expressed in a language comprehensible to everyone.

The more I do the less I do.

You are very welcome to contribute a talk or participate in a talk in this seminar. If you have any queries/comments on this seminar, please contact Sergey Goryainov (gs21@sjtu.edu.cn), Jiyou Li (lijiyou@sjtu.edu.cn), or Yaokun Wu (ykwu@sjtu.edu.cn).

Archive from the previous years (2017, 2016, 2015, 2014, 2013, 2012).

Schedule

DateTimeVenueSpeakerTitle
Sat, Jan 06, 2018 10:00 - 12:00 Middle Meeting Room Jun Wu (吴军), Minjiang University Some aspects of finite geometric lattices
Thu, Jan 18, 2018 14:00 - 15:00 Middle Meeting Room Sergey Goryainov, Shanghai Jiao Tong University On eigenfunctions and maximal cliques of Paley graphs of square order
Sun, Jan 21, 2018 15:00 - 16:00 Middle Meeting Room Takayuki Okuda (奥田隆幸), Hiroshima University Delsarte theory and Ihara's zeta functions on finite regular graphs: (I)
Wed, Jan 24, 2018 10:00 - 11:00 Middle Meeting Room Takayuki Okuda (奥田隆幸), Hiroshima University Delsarte theory and Ihara's zeta functions on finite regular graphs: (II)
Wed, Jan 24, 2018 14:00 - 15:00 Middle Meeting Room Jung-Chao Ban (班榮超), National Dong Hwa University On the degree of the subshifts of finite type on free semigroups
Wed, Feb 14, 2018 14:30 - 15:30 Middle Meeting Room Natalia Maslova (Маслова Наталья Владимировна), Krasovskii Institute of Mathematics and Mechanics On pronormal subgroups of finite groups
Wed, Mar 14, 2018 14:00 - 15:00 3323A Yangjing Long (龙旸靖), Central China Normal University Path relations on phylogenetic trees
Wed, Mar 28, 2018 15:20 - 16:20 3323A Dominik Scheder (谢德明), Shanghai Jiao Tong University Optimal directed graphs for epidemics control
Wed, Mar 28, 2018 16:30 - 17:30 3323A Vladislav Kabanov, Krasovskii Institute of Mathematics and Mechanics Strictly Deza graphs and rank $3$ permutation groups
Mon, Apr 09, 2018 14:00 - 15:00 Middle Meeting Room Elena Konstantinova, Sobolev Institute of Mathematics Algebraic, combinatorial and structural properties of the Star graphs
Mon, Apr 09, 2018 15:30 - 17:00 Middle Meeting Room Alexander Ivanov, Imperial College London The Monster Group: from Tilde Geometry to Majorana Theory
Wed, Apr 25, 2018 13:30 - 15:00 3323A Zeying Xu (徐泽瀛), Shanghai Jiao Tong University Tropical hyperplane arrangements and zonotopal tilings
Wed, May 09, 2018 10:30 - 11:30 Large Meeting Room Leonid Shalaginov, Chelyabinsk State University Dual Seidel switching and Deza graphs
Wed, May 09, 2018 14:00 - 15:00 上院302 Huiqiu Lin (林辉球), East China University of Science and Technology Size, transimission and spectral radius of a strongly connected digraph
Wed, May 09, 2018 15:00 - 16:00 上院302 Alexandr Valyuzhenich, Sobolev Institute of Mathematics On the factor complexity of infinite permutations
Wed, May 10, 2018 16:00 - 17:00 Middle Meeting Room Jian-Yi Shi (时俭益), East China Normal University Reflection groups
Sun, May 13, 2018 14:30 - 15:30 Middle Meeting Room Jinsong Xu (许劲松), Xi’an Jiaotong-Liverpool University Cellular automata: lives under simple rules
Sun, May 13, 2018 15:45 - 16:45 Middle Meeting Room Libo Huang (黄力博), CAS-MPG Partner Institute for Computational Biology The Bandelt-Dress quartet distance conjecture
Mon, May 14, 2018 16:00 - 17:00 Middle Meeting Room Jiang Zeng (曾江), Université Claude Bernard Lyon-I How to generalize Eulerian polynomials via combinatorics and continued fractions
Fri, Jun 01, 2018 16:00 - 17:00 Middle Meeting Room Bo Lin (林博), The University of Texas at Austin The geometry of phylogenetic tree spaces
Sat, Jun 02, 2018 10:00 - 11:00 Middle Meeting Room Zeying Xu (徐泽瀛), Shanghai Jiao Tong University Geometry and combinatorics of tree metrics
Fri, Jun 15, 2018 15:00 - 16:00 Middle Meeting Room Weidong Gao (高维东), Nankai University Zero-sum subsequences of distinct lengths
Fri, Jun 15, 2018 16:00 - 17:00 Middle Meeting Room Zhongtao Wu (吴忠涛), The Chinese University of Hong Kong An Alexander polynomial for graphs
Sun, Jun 17, 2018 10:00 - 12:00 Middle Meeting Room Denis Krotov (Совершенные комбинаторные структуры), Sobolev Institute of Mathematics On the equitable partitions of $H(12,2)$ with quotient matrix $[[3,9],[7,5]]$
Tue, Jun 19, 2018 14:00 - 15:00 Middle Meeting Room Shaoshi Chen (陈绍示), Chinese Academy of Sciences Reduction-based algorithms for creative telescoping
Mon, Jun 25, 2018 15:00 - 16:00 Middle Meeting Room Ruoxia Du (杜若霞), East China Normal University Enumeration on row-increasing tableaux of shape $2 \times n$
Mon, Jun 25, 2018 16:00 - 17:00 Middle Meeting Room Guoniu Han (韩国牛), Université de Strasbourg Joint distributions involving the Poupard and Entringer statistics
Wed, Jun 27, 2018 14:00 - 15:00 3323A Xinran Zhu (朱欣然), Shanghai Jiao Tong University Dynamics and equilibria of iterated prisoner's dilemma
Wed, Jun 27, 2018 15:30 - 17:00 3323A Nianzi Li (李念梓), Shanghai Jiao Tong University Cycle representation theory
Fri, Jun 29, 2018 09:30 - 11:00 Middle Meeting Room Nianzi Li (李念梓), Shanghai Jiao Tong University Applications of cycle representation theory and the rotational problem
Mon, Jul 09, 2018 16:00 - 18:00 Middle Meeting Room Jinsong Xu (许劲松), Xi’an Jiaotong-Liverpool University Hodge
Tue, Jul 10, 2018 15:30 - 16:30 Middle Meeting Room Yi Li (李翼), Nanyang Technological University TBA
Tue, Jul 10, 2018 16:45 - 17:45 Middle Meeting Room Wenxue Du (杜文学), Anhui University On a measure of graphs
Wed, Jul 11, 2018 09:00 - 11:00 Middle Meeting Room Jinsong Xu (许劲松), Xi’an Jiaotong-Liverpool University Hodge
Thu, Jul 12, 2018 14:00 - 15:00 Middle Meeting Room Rong Chen (陈容), Fuzhou University Three classes of matroids associated with graphs
Thu, Jul 12, 2018 15:30 - 16:30 Middle Meeting Room Hiroshi Hirai (平井広志), University of Tokyo Uniform semimodular lattice, valuated matroid, and Euclidean building

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