Sergei Grudsky:

Phone: (52-55)-5747-3800, ext. 6457
e-mail: grudsky@math.cinvestav.mx

Maribel Loaiza Leyva:

Phone: (52-55)-5747-3800, ext. 6432
e-mail: maribel.loaiza@gmail.com

Enrique Ramirez de Arellano:

Phone: (52-55)-5747-3875
e-mail: eramirez@math.cinvestav.mx

Postal Address:

Department of Mathematics
CINVESTAV del I.P.N.
Av. Instituto Politécnico Nacional # 2508
Col. San Pedro Zacatenco
México, D.F. CP 07360
México

Fax: (52-55)-5747-3876

Department of Mathematics Secretaries:

Anabel Lagos
Phone: (52-55)-5747-3868