A use of Euler's formula in Zaks (J. Combin. Theory Ser. B 32 (1982), 95-98) is replaced by an elementary argument on permutations.
Bibliographical noteFunding Information:
* Supported in part by NSERC grant. ’ In [l] (a) is proved only for planar formula yields (*) when S is an arbitrary (mod 2) if S is a nonorientable compact
ASJC Scopus subject areas
- Theoretical Computer Science
- Discrete Mathematics and Combinatorics
- Computational Theory and Mathematics