Abraham Markham Gelbart (December 2, 1911 – September 7, 1994) was an American mathematician, the founding dean of the Belfer Graduate School of Science at Yeshiva University and the namesake of the International Research Institute for Mathematical Sciences at Bar-Ilan University in Ramat Gan, Israel.
[3] He dropped out of high school at age 14, but studied mathematics at the New York Public Library, where he came under the mentorship of Yeshiva mathematician Jekuthiel Ginsburg.
Despite not having a high school diploma, he was accepted to Dalhousie University at age 23, and earned a bachelor's degree there in 1938.
He did his graduate studies at the Massachusetts Institute of Technology, earning a doctorate in 1940 under the supervision of Norbert Wiener.
He remained there until 1958, when he moved to Yeshiva, taking the position and the editorship of Scripta Mathematica both formerly held by his mentor Ginsburg.