Newspaper (El Pais, Spain) articles August 28, 1988 and March 19, 1989.

Papers starting 1985

Papers starting 1995

Papers starting 2005

Papers starting 2015

Research seminar series at Portland State University (2005, 2006, 2010, 2011)

Research seminar series at Rockefeller University (1996, 1997, 2008, 2009)

A language page.

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Teaching Fall 2017:
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IMPORTANT 1: All answers on home works and exams must be justified,  even if  that is not evident from
                              the phrasing of the question. Answers without justification will receive partial credit at best.
IMPORTANT 2: Before turning in exams or HW's, write your first plus last name in the top right corner
                              of each sheet you turn in (even if you staple them together)!

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MTH 663, Algebraic Graph Theory III

Here is the syllabus.
All assignments, home works, and exams are discussed in class.

PROJECTS:
Gil:           Spectral Clustering.
Tess:         Counting Nodal Domains.
Chris:       Automorphisms and Eigenvectors.
Victor:      Minimal Separating Sets.
Ewan:       Laplacian Dynamics.
Robert:     Laplacian Eigenmaps.

FINAL 663:                 Tues, June 12, 17:30-19:20.

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MTH 471/571, Complex Variables and Boundary Value Problems II

Here is the syllabus.
All assignments, home works, and exams are discussed in class.

Homework due:      Tue, Apr 10: 3.3: 1, 2, 3, 4, 9, 11, 18, 19;
                                                     Review: 1, 2, 3, 5, 11, 15, 16, 17, 25, 26, 27.
                                Tue, Apr 17: 4.1: 1, 2, 3, 5, 7, 8, 9, 10.                             
                                Tue, Apr 24: 4.2: 1, 3, 4, 5, 6, 7, 9, 10, 13.
                                Tue, May 01: All examples of 4.3 done in class and 4.3: 1, 2, 3, 4, 6.
                                Tue, May 08: Review Ch 4, problems 1, 2, 3, 4, 5, 6, 7, 9.
                                                       5.1: 1, 2, 3, 4, 5, 10, 11, 12.
                                Tue, May 15: 5.2: 1, 2, 3, 4, 5.
                                Tue, May 22: 5.2: 11, 20, 24; Review Ch 5, problems 1, 2, 3 (use pg 340, case iii), 12.
                                                       6.2: 1, 2, 3, 4, 5, 6, 9;

General Announcement for Students:
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In most of my classes you will be either strongly encouraged,
or even obliged to turn in your HW in *.pdf format based on LATEX.
Here is a website where LATEX is explained: 
http://www.ctan.org/tex-archive/info/Math_into_LaTeX-4/