Conjugate Gradient Method: A NIST Invention?

Mathematics Genealogy

Quadratic Formula Mnemonic

Roberto "El Flaco" Meléndez

Le Huitième (1/8) Noir

Japanese Manual

Spanish Grammar in 1771

In Jewish Cemetery, San José, Costa Rica (December 2006)

In Kanazawa Samurai District, Kanazawa, Japan (1998)

In Bethesda, Maryland, USA (November 2012)

In front of Twin Towers, NYC, USA (circa 1990)

In Alexandria, Virginia, USA (1990)
At graduation ceremony (in 1981, for Ph. D. completed in 1980), Catholic University, Washington, DC, USA