Bernard Morris Dwork (May 27, 1923 – May 9, 1998) was an American mathematician, known for his application of p-adic analysis to local zeta functions, and in particular for a proof of the first part of the Weil conjectures: the rationality of the zeta function of a variety over a finite field.
Dwork studied electrical engineering at the City College of New York and Brooklyn Polytechnic Institute.
[1] He received his Ph.D. at Columbia University in 1954 under direction of Emil Artin (his formal advisor was John Tate); Nick Katz was one of his students.
[1] He was named a Professore di Chiara Fama by the Italian government and held a special chair at the University of Padua from 1992 onwards.
[1] For his proof of the first part of the Weil conjectures, Dwork received (together with Kenkichi Iwasawa) the Cole Prize in 1962.