\\ Welcome to Wasin So's Homepage
Position : Professor of Mathematics
Office: MacQuarrie Hall Room 418
Office hours (January 24, 2019 -- May 13, 2019):
- MW 10:15-- 12:15
- by appointment via email
Address:
Department of Mathematics and Statistics
San Jose State University
One Washington Square
San Jose, California 95192-0103
U.S.A.
Telephone: 408-924-5155
Fax : 408-924-5080
Email: wasin dot so at sjsu dot edu
Education
Academic Experience
- 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 Researcher, 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 Researcher, University of Malta, Malta, July 2012.
- Visiting Researcher, Cochin University of Science and Technology, Cochin, India, March--April, 2016.
- Visiting Researcher, Nankai University, Tianjin, China, October--November, 2016.
- Visiting Researcher, Northwestern Polytechnic University, Xian, China, July, 2018.
- Professor, San Jose State University, 2006 -- present.
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****** Discovered (by students) is Better than Covered (by teacher) ******
****** High Standard, Plenty Help, Some Fun ******
****** Not Just Think But Think Carefully, Confidently and Creatively ******
Courses taught NEXT semester (Spring 2019: January 24 -- May 13, 2019):
- Math 42 Discrete Mathematics, section 1, MW 9:00--10:15, MH423
- Math 42 Discrete Mathematics, section 3, MW 13:30--14:45, MH423
- Math 229 Advanced Matrix Theory, section 1, MW 16:30--17:45, MH233
Courses taught before:
- Calculus sequence:
- Discrete Mathematics sequence:
- Linear Algebra sequence:
- Probability and Statistics sequence:
- Applied Math sequence:
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****** Expect the Unexpected ******
****** Often Imitated But Never Duplicated ******
Interests :
- 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
Ongoing Projects, Preprints, and Recent Publications :
- On the energy and skew energy of graphs (with Wen-Huan Wang), preprint.
- On the sparsity of Jordan form (with Minh Vu), preprint.
- How many integral circulant graphs are there (with C. Cusanza), preprint.
- Solutions of $x^y=y^x$ with $0 < x < y$, preprint.
- The generalized distance matrix of digraphs (with Ligong Wang, Weige Xi), submitted.
- Merging the A- and Q-spectral theories for digraphs (with Ligong Wang, Weige Xi), submitted.
- Minimizing distance signless Laplacian spectral radius of digraphs with given arc connectivity (with Ligong Wang, Weige Xi), submitted.
- On the signless Laplacian spectral radius of digraphs with given arc connectivity (with Ligong Wang, Weige Xi), submitted.
- On the spectrum of an equitable quotient matrix and its application (with Lihua You, Man Yang, and Weige Xi), submitted.
- The automorphism group of the Knodel graph W(k,2^k) (with R. Balakrishnana, P. Paulrajab, and M. Vinayd), accepted.
- Unicyclic Graphs with Second Largest and Second Smallest Permanental Sums (with Tingzeng Wu), Applied Mathematics and Computation
351 (2019) 168-175.
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Past publication (before 2019)
Upcoming meetings and Recent Presentations:
- Joint Mathematics Meetings, Baltimore, Maryland, January 16--19, 2019.
- "On the Spectral Radius of an Equitable Quotient Matrix"
Past presentations (before 2019)
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****** Don't Need To, But Want To ******
****** Don't Want To, But Need To ******
Department (2018-2019)
- Mathematics Graduate Coordinator
- Member of MA Mathematics Committee
- Member of Retention, Tenure and Promotion Committee
Professional
- 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 , 2014.
Abstract
- Minh Vu, A Study of the Sparsity Property of the Jordan Canonical Form, 2016.
Abstract
- 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
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Linear Algebra Journals
Mathematical Societies
Mathematics Centers
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