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** Position :** Professor of Mathematics

** Office:** MacQuarrie Hall Room 418

** Office hours ( Jan 26 -- May 13, 2015 ): **

- Mondays and Wednesdays 10:15 -- 11:30 am
- by appointment (via email)

** Address:**

Department of Mathematics and Statistics

San Jose State University

San Jose, California 95192-0103

** Telephone:** 408-924-5155

** Fax :** 408-924-5080

** Email:** wasin dot so at sjsu dot edu

- B.Sc., University of Hong Kong, 1983
- M.Phil., University of Hong Kong, 1986
- Thesis : Convexity properties of state spaces of uniform algebras
- Advisor : Alan J. Ellis

- Ph.D., University of California at Santa Barbara, 1991
- Thesis : Exponential Formulas and Spectral Indices
- Advisor : Robert C. Thompson

- Postdoctoral Researcher, Institute for Mathematics and its Applications, University of Minnesota, 1991--1992.
- Postdoctoral Researcher, Center of Linear Structures and Combinatorics , University of Lisbon, 1993.
- Project NExT Fellow, 1994--1995.
- Assistant Professor, Sam Houston State University , 1992--1999.
- Visiting Lecturer, Xiangtan Polytechnic University, Hunan, China, May--June 1999.
- Associate Professor, Sam Houston State University, 1999--2000.
- Associate Professor, San Jose State University, 2000 -- 2006.
- Visiting Lecturer, University of Malta, Malta, July 2012.
- Professor, San Jose State University, 2006 -- present.

** Courses taught this semester (Spring 2015: Jan 26 -- May 13, 2015):**

- Math42 Discrete Mathematics, section 3, MoWe 12:00--13:15, MH320
- Math42 Discrete Mathematics, section 4, MoWe 13:30--14:45, MH320
- Math 179 Introduction to Graph Theory, MoWe 9:00--10:15, MH234
- Syllabus (updated) , Calendar
- Homework , HW1 , HW2 , HW3 , HW4 , HW5 , HW6 , HW7 , HW8
- Project , A collaboration graph example
- Sample_questions , Sample_answers , Solution 1

** Courses taught before:**

- Calculus sequence:
- Discrete Mathematics sequence:
- Linear Algebra sequence:
- Probability and Statistics sequence:
- Applied Math sequence:

- Matrix Theory : the study of arrays
- Graph Theory : the study of dots and lines
- Probability Theory : the study of chances
- Number Theory : the study of integers
- Interest Theory : the study of money

- On the energy and skew energy of graphs (with Wen-Huan Wang), preprint.
- Graph energy change due to any single edge deletion (with Wen-Huan Wang), preprint.
- On minimum matching energy of graphs (with Wen-Huan Wang),
*MATCH Communications in Mathematical and in Computer Chemistry*74 (2015) 399--410. - A simple sufficient condition for complete positivity (with Changqing Xu),
*Operators and Matrices*9 (2015) 233--239. - Finding the least element of the ordering of graphs with respect to their matching numbers (with Wen-Huan Wang),
*MATCH Communications in Mathematical and in Computer Chemistry*73 (2015) 225--238. - Past publication (before 2015)

- ???

- Advisor of BS Applied Mathematics: concentration in Economics, and Actuarial Science
- Member of RTP and PTR committee
- Member of Computing Resource committee
- Member of Undergraduate Curriculum committee
- Member of Discrete Math and Graph Theory course committee
- Member of Linear Algebra and Matrix Theory course committee

- Master thesis/project students
- Jane Huang,
*Image Registration and Wavelet Decomposition*, 1997 - Linda Zientek,
*Fundamental Similarity*, 1997 - David Benzel,
*Pythagorean Triples and Jasmenwozc Conjecture*, 1998 - Christopher F. Cusanza,
*Integral Circulant Graphs with the Spectral Adam Property*, 2006. Abstract - Viet Nguyen,
*Construction of Symmetric Matrices with Prescribed Spectra*, 2006. Abstract - Tue Rust,
*Understand the Cayley-Hamilton Theorem*, 2006. Abstract - Wilson Florero,
*The Search of Graphs Equienergetic with Edge Deleted Subgraph*, 2008. Abstract - Vinh Nguyen,
*Family of Circulant Graphs and its Expander Properties*, 2010. Abstract - David Zimmermann,
*The Friendship Theorem*, 2010. Abstract - Usha Watson,
*Integral Cayley Graphs over Z_2 + Z_{2p}*, 2011. Abstract - Nick Khorlin,
*A Characterization of Graphically Spectral Numbers*, 2013. Abstract - Ryan Flarity,
*Generation and Completion of Unimodular Matrices*, 2013. Abstract - Shanthi Kannan,
*Hitting Time and PageRank*, 2013. Abstract

- Jane Huang,
- Referee for the following journals
- Linear Algebra and its Applications
- Linear and Multilinear Algebra
- SIAM Journal on Matrix Analysis and Applications
- Electronic Journal of Linear Algebra
- American Mathematical Monthly
- Discrete Mathematics

- Reviewer of Mathematical Reviews
- Examiner of
- University of Hong Kong, Hong Kong
- Hong Kong Baptist University, Hong Kong
- Bharathidasan University, India

- Co-organizer of the following meetings:
- 1999 Conference on Multiwavelets: theory and applications, Huntsville, Texas
- 2001 Southern California Matrix Conference, San Jose, California
- 2004 Southern California Matrix Conference, San Jose, California
- 2005 R. C. Thompson Matrix Conference, San Francisco, California
- 2007 R. C. Thompson Matrix Conference, Auburn, Alabama

- Judge of the following math/science fair
- 2001 Intel Science Fair
- 2002, 2003, 2004 MAA Math Undergrad Poster

- AP Statistics reader
- 2004, 2005, 2007, 2009

- Linear Algebra and its Applications
- Linear and Multilinear Algebra
- SIAM Journal Matrix Analysis and Applications
- Numerical Linear Algebra with Applications
- Electronic Journal of Linear Algebra

- American Mathematical Society (AMS)
- Mathematical Association of America (MAA)
- Society of Industrial and Applied Mathematics (SIAM)
- International Linear Algebra Society (ILAS)

- Institute for Pure and Applied Mathematics (IPAM)
- The Mathematical Sciences Research Institute (MSRI)
- The American Institute of Mathematics (AIM)
- The Clay Mathematics Institute (CMI)
- Institute for Mathematics and its Applications (IMA)
- Center for Discrete Mathematics and Computer Science (DIMACS)
- Mathematical Biosciences Institute (MBI)