The American mathematician Kenneth I. Appel was born in Brooklyn, New York on October 8, 1932. He earned a B.S. degree from Queens College in 1953, then served in the U.S. Army for two years following his graduation. In 1955, he enrolled in graduate...

1932- American mathematician known for his work in topology, the branch of mathematics that explores certain properties of geometric figures. In 1976 he solved the four-color problem, originally posed in 1850, that has enabled maps to be drawn and...

Kenneth Appel (born 1932) is a mathematician who, in 1976 with colleague Wolfgang Haken at the University of Illinois at Urbana-Champaign, solved one of the most famous problems in mathematics, the four-color theorem. They proved that any...

Radiocephalic fistula for hemodialysis is the most effective vascular access since it was developed at the Bronx Veterans Administration Hospital in New York City by Kenneth Charles Appell in February 1965. The first fourteen cases were published in a classic paper (N Engl J...

LOS ANGELES KEVIN APPEL ANGLES GALLERY What is "pictorial" space? Modernist criticism put the question near the top of its agenda but never provided a definitive answer, preferring instead to blur its theoretical parameters in a way that might enable a...