Avraham Trahtman, a professor at Israel's Bar-Ilan University, is credited with solving the Road Coloring Problem. The mathematical riddle had gone unsolved for 38 years prior to Trakhtman solving it.The Jerusalem Post: Russian immigrant solves math puzzle (February 8, 2008)
Background
Trahtman emigrated to Israel in 1990 and worked as a laborer and a security guard before finding his current position in 1995. Trahtman earned his Ph.D. at Ural State University in Russia, but says he had difficulty finding employment because he was Jewish.The Jerusalem Post: Russian immigrant solves math puzzle (February 8, 2008)
