Mathematician:Israel Moiseevich Gelfand

Israel Moiseevich Gelfand or Israïl Moyseyovich Gel'fand was a Soviet and Russian mathematician who contributed considerably to many branches of mathematics, including group theory, representation theory and linear algebra.

Did much good work in the field of education. Various renditions of his name:
 * Yiddish:  ישראל געלפֿאַנ
 * Russian: Израиль Моисеевич Гельфанд
 * Ukrainian: Ізраїль Мойсейович Гельфанд

Not to be confused with Alexander Gelfond.

Nationality
Ukrainian / Soviet / Russian

History

 * Born: 2 September 1913, Okny, Ukraine (then part of the Russian Empire, now Krasniye Okny, in Kherson Oblast, Ukraine)
 * Died: 5 October 2009, Highland Park, New Jersey, USA

Theorems and Inventions

 * Gelfand Representation in Banach algebra theory
 * Gelfand-Mazur Theorem in Banach algebra theory
 * Gelfand-Naimark Theorem
 * Gelfand-Naimark-Segal Construction
 * Gelfand-Pettis Integral
 * Gelfand-Fuks Cohomology of foliations
 * Gelfand-Kirillov dimension
 * Gelfand-Tsetlin patterns
 * Gelfand–Tsetlin basis
 * Gelfand pair
 * Gelfand triple

Books and Papers

 * 1935: Abstract functions and linear operators

... which was the first of over 500 papers.