**Home** || **Teaching** || **Papers** || **Talks** || **Links**

- Jun 27, 2019 - Finite and infinite
- Jun 15, 2019 - Transformation and unimodality
- Apr 26, 2019 - 照片魔术？
- Nov 13, 2018 - Having fun with points, lines, planes...
- Aug 19, 2018 - Announcement of G2D2-2019
- Aug 18, 2018 - An expansion property of Boolean multivariate digraphs
- Jul 17, 2018 - Multivariate digraphs
- May 03, 2018 - A simple multibody system on a discrete circle
- Dec 17, 2017 - Zonotopal tilings and trees
- Nov 15, 2017 - Linear algebra without linear spaces: Ideas of Whitney and many others
- Jul 29, 2017 - Lipschitz polytopes of tree metrics
- Jul 28, 2017 - From Markov chains to Multivariable digraphs
- Apr 02, 2017 - 2016 SJTU Science Competition in Vietnam: Impression and invitation
- Dec 31, 2016 - Combinatorics of Boolean linear dynamics
- Dec 07, 2016 - An idea of Gallai: Having fun with intervals and beyond
- Aug 18, 2016 - Lit-only $\sigma$-game and relevant mathematics
- May 24, 2016 - From single-variable graph theory to multivariable graph theory: Expansion properties
- Dec 28, 2015 - Lit-only $\sigma$-game
- Dec 26, 2015 - Some combinatorial properties of the fundamental polytope
- Aug 03, 2015 - Graph dynamical systems (A longer version)
- May 17, 2015 - Boolean linear dynamical system
- Mar 21, 2015 - Secrets to longevity
- Feb 02, 2015 - Encoding $X$-trees with tree preorders
- Nov 29, 2014 - Having fun in the trees
- Aug 10, 2014 - Phase space of the lit-only $\sigma$-game
- May 06, 2014 - Hamiltonian thickness and rooted path systems in a graph
- Sep 24, 2013 - Combinatorics of the lit-only $\sigma$-game
- Jun 24, 2013 - Spanning connectivity and Hamiltonian thickness of graphs and interval graphs
- Jun 02, 2013 - Hamiltonian connectedness and thick Hamiltonian orderings of graphs and interval graphs
- Apr 20, 2013 - What is the lit-only $\sigma$-game?
- Jun 20, 2012 - First-Fit chromatic number of interval graphs
- Jun 19, 2012 - Paths in interval graphs
- Sep 19, 2011 - Rigid interval graphs: Vertex ordering characterizations and multi-sweep graph search recognition algorithm
- Jun 29, 2011 - Multi-sweep maximal neighborhood search and interval graphs
- Feb 03, 2011 - Phase space of the lit-only $\sigma$-game: Possible extensions of the Sutner's theorem?
- Nov 27, 2010 - Incidence matrix and cover matrix of a poset
- Oct 30, 2010 - Multi-sweep LBFS algorithms for interval graph recognition
- Jun 12, 2010 - Phase space of the lit-only $\sigma$-game
- May 30, 2010 - Hyperbolicity and other tree-likeness parameters
- Feb 20, 2009 - MA106 现代数学选讲
- Jan 18, 2009 - 树状结构的一些例子及其它
- Sep 08, 2008 - Simple algorithm for simple structure: One proof, several facts
- Jul 21, 2008 - Does the lit-only restriction make any difference for the $\sigma$-game and $\sigma^+$-game?
- Apr 10, 2008 - A glimpse of convexity and Helly-type results
- Apr 03, 2008 - Polynomials in combinatorics: Four examples
- Jul 16, 2007 - Some combinatorial problems for binary linear space
- Feb 06, 2007 - Split decomposition theory and the mod $2$ cohomology of finite simplicial complexes
- Jun 22, 2006 - De Bruijn digraphs and affine transformations
- Apr 06, 2006 - From Eulerian graph to even poset
- Jul 16, 2005 - Digraphs with primitive colorings
- Sep ?, 2001 - Blocking system