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.

Teaching Summer 2016:
 
 IMPORTANT: 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.         

- MTH 344: syllabus and course plan
                Mon Jul 27: All problems from Chapter 2 and Ch 3: A4, B2, C, D, and E.
                Mon Jul 04: Ch 4: A, B, C, D (except 3), E F.  Ch 5: A 1, 2, 4, 7; B 1--4; C 1--4; D 1, 2, 3; E 1--5; F 2, 3; G.
                Mon Jul 11: Ch 6: A 4, 5, 6; B 4, 5; C 4, 5, 6; E 4, 5, 6; F 2, 5; G; H.
                Mon Jul 11: MIDTERM: Ch 1--5 (HW included).
                Mon Jul 18: Ch 7: A, B, C, F, G H, I;  Ch 8: A (last items only), C, D 1--4, G, H 1, 2, 3; Ch 9: A, C, D, E, F. 
                Mon Jul 25: Ch 10: B, C, D; Ch 11: A,  B 1--4, Ch4 G, E 1--7; Ch 12: A 2, 3, 4, 6; B 2, 3, 5, 7, 9, 10; C, D, E
                Wed Jul 27: MIDTERM:Ch 6--12 (all HW included, such as Ch 4 prob G).
                Mon Aug 01: Ch 10: D2, E2, 3; CH 13: A, B, C, F, G, H; Ch 14: A.
                Mon Aug 08: Ch 14: (A); B; C 1--4; D 1, 2, 5; E 1, 4; F 1; G; I 1, 2, 3. Ch 15: A, B, C 1--5, D, E 1--3, H.
                                       Ch 16: A, B, C, D, H, F, I.
                Wed Aug 10: Final:Ch 1--16 (all HW included).

General Announcement for Students:

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/