1. CMB 1997 (vol 40 pp. 471)
||A short proof of Euler's relation for convex polytopes* |
The purposen of this paper is to present a short, self-contained
proof of Euler's relation. The ingredients of this proof are (i) the
principle of inclusion and exclusion of combinatorics and (ii) the
Euler characteristic; a development of the Euler characteristic is included.