by Kathy Wilson

An international portrait gallery
of sketches of contemporary mathematicians

These small sketches were done during lecture presentations at seminars and conferences
in the United States, China, Japan, Iran and South Korea.
Each entry consist of one of these sketches, and the title of the lecture
during which it was drawn, as well as the country of origin.

See sketch of mathematician:
Andries Brouwer
Richard Brualdi
Charles Colburn
Reza Khosrovshahi
Shahriar Shahriari
Sung Yell Song
* Rick Wilson *
Paul-Hermann Zieschang


Rick Wilson
California Institute of Technology, USA

Revisiting the (t,k)-subset inclusion matrices:

Shanghai, China, May 15, 2005

May 20, 2005, Hsinchu, Taiwan

April 30, 2005, Brualdi-Fest, Madison, Wisconsin

More on Decompositions of Edge-Colored Complete Graphs
Busan, South Korea, Tuesday, July 20, 2004

July, 2004, Kyoto Japan

Decompositions of Edge-Colored Complete Graphs
and their Applications to 2-Designs and Universal Algebra
IPM, Tehran, Iran, Wednesday, August 13, 2003


Reza Khosrovshahi
Institute for Studies in Theoretical Physics and Mathematics
University of Tehran, Iran

Ranks and Adjacency Matrices of Graphs
Busan, South Korea, Monday, July 19, 2004


Paul-Hermann Zieschang
University of Texas at Brownsville, USA

Recognition Theorems for Association Schemes
Busan, South Korea, Tuesday, July 20, 2004


Andries Brouwer
T.U. Eindhoven, The Netherlands

Uniqueness of the Patterson graph
Busan, South Korea, July 23, 2004


Sung Yell Song
Iowa State University, US

Polygonal Designs: Some Existence and Non-Existence Results
Busan, South Korea, Wednesday July 21, 2004


Richard Brualdi
University of Wisconsin at Madison, USA

The Class A(R,S) of (0,1) -Matrices
IPM, Tehran, Iran, Tuesday, August 12, 2003

Biographs, Digraphs, SNS Matrices, Tilings Aztec Diamonds and More
IPM, Tehran, Iran, Thursday, August 14, 2003


Shahriar Shahriari
Pomona College, USA

Chain Partitions of Subset and Subspace Lattices
Monday, August 11, 2003
IPM, Tehran, Iran


Charles Colbourn
Arizona State University, USA

Topology–Transparent Communication and Cover-Free Families
Friday, May 20, 2005
Hsinchu, Taiwan

Graph Embeddings and Two-period Optical Grooming
May 15, 2005
Shanghai, China

Using Combinatorial Designs to Test for Defectives
Saturday, September 21, 2002
Richmond, Virgina, USA

2005 Conference trip to China and Taiwan
2004 Conference trip to South Korea and Japan, Summer, 2004
2003 Conference trip to Iran

Combinatorics Seminars, Caltech