Stephen Schanuel

Stephen Hoel Schanuel (born July 14, 1933 in St. Louis , † July 21, 2014 in Jacksonville ) was an American mathematician who studied algebra and number theory.

Schanuel studied at Princeton University (Bachelor in 1955) and the University of Chicago (Master in 1956) and received his doctorate in 1963 from Columbia University under Serge Lang (Heights in Number fields). From 1959 to 1961 he was an instructor at the Massachusetts Institute of Technology , 1961 to 1963 at Columbia University, and 1963 to 1965 at Johns Hopkins University . In 1965/66 he was at the Institute for Advanced Study . He was then Professor at Cornell (1965 to 1969 as Assistant Professor), 1969 to 1972 Associate Professor at the State University of New York at Stony Brook (SUNY) and from 1972 Associate Professor at the State University of New York at Buffalo , where he worked a lot with his colleague William Lawvere .

As a student he proved Schanuel's lemma, named after him, in homological algebra .

The drawn up by him Schanuel's conjecture plays a central role in the theory of transcendental numbers, because there are many results follow from it. It says that if complex numbers and the numbers ( ) are linearly independent over the rational numbers, the expansion field of the rational numbers formed by the adjunction of these numbers has at least the degree of transcendence . The conjecture is still unproven. ${\ displaystyle n}$ ${\ displaystyle l_ {i}}$ ${\ displaystyle \ exp {(l_ {i})}}$ ${\ displaystyle i = 1, \ dots, n}$ ${\ displaystyle 2n}$ ${\ displaystyle n}$

He had been married since 1958 and had two children. Schanuel died on July 21, 2014 at the age of 81 in Jacksonville, Florida.

Fonts

with William Lawvere Conceptual mathematics: a first introduction to categories , Cambridge University Press 1997
Editor with William Lawvere Categories in Continuum Physics (Buffalo, NY 1982) , Springer Lecture Notes in Mathematics, Volume 1174, 1986, ISBN 3-540-16096-5

Individual evidence

↑ Life and career data according to American Men and Women of Science , Thompson Gale 2005
↑ Obituary notice

personal data
SURNAME	Schanuel, Stephen
ALTERNATIVE NAMES	Schanuel, Stephen Hoel (full name)
BRIEF DESCRIPTION	American mathematician and university professor
DATE OF BIRTH	July 14, 1933
PLACE OF BIRTH	St. Louis
DATE OF DEATH	July 21, 2014
Place of death	Jacksonville

[1] Life and career data according to American Men and Women of Science , Thompson Gale 2005

[2] Obituary notice