Stephen Schanuel

Stephen H. Schanuel (1933—2014) was an American mathematician working in the fields of abstract algebra and category theory, number theory, and measure theory.[1][2]

Stephen Schanuel
BornJuly 14, 1933
DiedJuly 21, 2014
NationalityUnited States
Alma materColumbia University
Known forSchanuel's conjecture
Schanuel's lemma
Scientific career
InstitutionsUniversity at Buffalo
Doctoral advisorSerge Lang
Doctoral studentsW. Dale Brownawell


While he was a graduate student at University of Chicago, he discovered Schanuel's lemma, an essential lemma in homological algebra.[2] Schanuel received his Ph.D. in mathematics from Columbia University in 1963, under the supervision of Serge Lang.[2]


Shortly thereafter he stated a conjecture in the field of transcendental number theory, which remains an important open problem to this day.[2] Schanuel was a professor emeritus of mathematics at University at Buffalo.[1]


  1. "Recent alumni deaths". Princeton Alumni Weekly. April 22, 2015. Retrieved 23 June 2015.
  2. "Steve Schanuel has passed away". University at Buffalo, Mathematics Department. Retrieved 23 June 2015.
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