Theodore Frankel

Theodore Frankel (June 17, 1929 – August 5, 2017) was a mathematician and Professor Emeritus of Mathematics at the University of California, San Diego, known for his work in global differential geometry, Morse theory, and relativity theory[1]. He introduced the Andreotti–Frankel theorem and the Frankel conjecture, and was a longtime member of the Institute for Advanced Study in Princeton, New Jersey[1][3].