Track the chain of co-authorships connecting a given mathematician with Paul Erdös (1913–1996). Maintained by Jerry Grossman at Oakland University, with the collaboration of Patrick Ion at Mathematical Reviews and Rodrigo De Castro at the Universidad Nacional de Colombia, Bogota.
A collection of articles about aspects of mathematics at and above the university level, but (usually) not at the level of current research. Designed with the visitor in mind who wants to know something about a topic in mathematics -- why it's interesting, how it fits in with the rest of mathematics, and how it may be useful for solving some problem in or out of mathematics.
A comprehensive on-line resource for mathematicians and others with an interest in topology. Features preprints, invited contributions, individual and organizational directories, conference calendar, and more.
SIAM members are applied and computational mathematicians, computer scientists, numerical analysts, engineers, statisticians, and mathematics educators working in industrial and service organizations, universities, and government agencies and labs all over the world.