Welcome to Jesús Guillera web page


Number Theory - Experimental Mathematics - Pi formulas - Hypergeometric series - Ramanujan-like series - Special Functions

Last update: December 24, 2020

Jesús Guillera photo

Dr. Jesús Guillera

University of Zaragoza

Department of Mathematics (Collaborator)


ORCID orcid 0000-0001-9832-6882



Extraordinary PRIZE of doctorate

Mathematical GENEALOGY

Exp. Math. in P. Euclid

My papers on the arXiv


Coloquios CINE...MÁTICOS (Vimeo)


Formula for pi

The above formula is one of my formulas for pi written in a popular form (Ramanujan's style). I proved it in 2002 by the Wilf and Zeilberger WZ-method.

See it written in a more compact form (with the summation symbol and combinatoric numbers) in “samples of my work”.