Tim Hsu

Hi. I'm an associate professor in the math department at San José State University.

Office: MacQuarrie Hall 419.

Phone: (408)924-5071, fax (408)924-5080.

E-mail: hsu@math.sjsu.edu.

Office hours: MW9:30-10:30, W1:30-2:30; M1:30-3:30 except on Feb 27, Mar 19, Apr 2, Apr 23, Apr 30. Click here for full Spring 2012 schedule.

Click on the picture above to see a few more pictures (including a Simpsonized version).

I'm the advisor of many of our students getting BA's in Math (the standard option), so if you need advice on your undergraduate degree, please contact me, and I can at least put you in touch with someone who can help.

New (as of Fall 2010)! Click here for more information on SJSU math advising, or more specifically, advising for undergraduate math majors at SJSU.

In Spring 2012, I'm teaching:

• Math 129B (Linear algebra II)
• Math 203 (CAMCOS)

Other teaching things:

• How to minor or major in math at SJSU.
• Handouts on writing math in paragraph style and writing proofs (revised August 2008). The first handout is for anyone learning to write up solutions to math problems in complete sentences. The second is aimed at students who know a little bit of linear algebra, but should be useful for anyone learning how to write proofs, since it doesn't really rely on any knowledge of linear algebra. (Someday, I want to turn the second handout into a book; please contact me if (a) you're a publisher, (b) you find the idea interesting, and (c) you can figure out a way to charge less than $10 for it.)
• Handout on how to do well in college math, especially for beginning students. In three words: Do your homework!
• Looking for an advisor for your master's thesis at SJSU? Check out this list of master's and senior theses I've advised at SJSU, Pomona College, and the University of Michigan.
• Home pages for some classes I've taught in the past:
  • Math 19 (Precalculus), Fall 2011.
  • Math 108 (Introduction to proof), Fall 2011.
  • Math 128B (Abstract algebra II), Spring 2011.
  • Math 128A (Abstract algebra I), Fall 2010.
  • Math 31 (Calculus II), Spring 2010.
  • Math 126 (Introduction to number theory), Fall 2009.
  • Math 131a (Introduction to analysis), Fall 2008.
  • Math 32 (Calculus III), Fall 2006
  • Math 112 (Vector calculus), Spring 2006
  • Math 30 (Calculus I), Fall 2004
  • Math 10 (Mathematics for general education), Spring 2004
  • Math 142 (Introduction to combinatorics), Fall 2002
  • Math 129A (Linear algebra I), Spring 2002
  • My section of the AMP (Alliance for Minority Participation) Summer Math Intensive Academy, 2001.
  • Pomona College, Math 145, Spring 2000-2001 (Hyperbolic geometry)
  • Michigan Math Scholars Summer 1998: Codes, ciphers, and secret messages

I'm also the Director of the Center for Applied Mathematics, Computation, and Statistics (CAMCOS). Check out our web page and application form.

Finally, I'm also the SJSU Math Colloquium chair. Click here for current colloquium info.

My research interests are in various areas of discrete mathematics, especially group theory, which is the mathematical study of symmetry through abstract algebra. I am also interested in other topics in algebra and combinatorics. More specifically, my interests include:

• Geometric group theory, especially groups of non-positive curvature;
• Combinatorics of partially ordered sets (extremal set theory);
• l² invariants, like homology and cohomology, which I gather falls under the buzzword of noncommutative geometry;
• Combinatorial game theory;
• Sporadic finite simple groups, and related phenomena, like Moonshine and Moufang loops; and
• Modular groups and braid groups of various types.

If you want more details, here are my academic vitals.

• Curriculum vitae with annotated bibliography (includes links to postscript/pdf preprints of most papers)
• Nicely formatted printable versions of my CV: postscript, pdf. (Version without abstracts: postscript, pdf; version emphasizing discrete math, for industry: postscript, pdf.)

A very old but still shameless self-promotion! My research monograph, Quilts: Central extensions, braid actions, and finite groups, is available as Springer Lecture Notes in Mathematics vol. 1731 (listing on amazon.com, though now out of print).

Mailing address:

Last updated Aug 23, 2011