Beschreibung:
Hugo Hadwiger (1908-81) was Professor of Mathematics at Bern University in Switzerland. He worked primarily in the fields of geometry, combinatorics, and cryptography. Hans Debrunner also taught at Bern University.
Victor Klee (1925-2007) was Professor of Mathematics at the University of Washington in Seattle.
Advanced undergraduate-level text discusses theorems on topics restricted to the plane, such as convexity, coverings, and graphs. Two-part treatment begins with specific topics followed by an extensive selection of short proofs. 1964 edition.