At the problem session of the 14th British Combinatorial Conference, Cameron asked for a bijection between the set of permutations of { 1,2 ..... nl. with all cycles of even length and the set of permutations of { 1, 2 ..... n} with all cycles odd (where n is even). Here we give bijections between m
On a Problem by J. M. Wills
β Scribed by Peter Sauer
- Publisher
- John Wiley and Sons
- Year
- 1993
- Tongue
- English
- Weight
- 173 KB
- Volume
- 162
- Category
- Article
- ISSN
- 0025-584X
No coin nor oath required. For personal study only.
β¦ Synopsis
Abstract
Let P~1~(n), P~2~(n), P~3~(n) denote the normβpolyhedra cube, crosspolytope and sphere in the Euclidean nβspace. We consider the polyhedra D~i,j~(n):=P~i~(n)β©P~j~(n) with 1 β¦ i β j β¦ 3. In [2] posed the question about the limits \documentclass{article}\pagestyle{empty}\begin{document}$\mathop {\lim }\limits_{n \to \infty } $\end{document} V(D~i,j~(n)) of the volumes of the polyhedra D~i,j~(n). WEISSBACH gave the answer for one of them, namely \documentclass{article}\pagestyle{empty}\begin{document}$\mathop {\lim }\limits_{n \to \infty } $\end{document} V(D~1,2~(n)). A more general result used Banachβspace methods of Schechtman and ZINN contains the solution for the limits \documentclass{article}\pagestyle{empty}\begin{document}$\mathop {\lim }\limits_{n \to \infty } $\end{document} V(D~i,j~(n)). The main result of this paper is the determination of both limits \documentclass{article}\pagestyle{empty}\begin{document}$\mathop {\lim }\limits_{n \to \infty } $\end{document} V(D~1,3~(n)) and \documentclass{article}\pagestyle{empty}\begin{document}$\mathop {\lim }\limits_{n \to \infty } $\end{document} V(D~2,3~(n)) with geometrical methods.
π SIMILAR VOLUMES
A problem of J. Csima on the factorization of regular bipartite graphs is settled. Let G be a k-regular bipartite graph with bipartition (X, Y). We say that G is a k-spread if IN(S)] 3 ]SI + k -1 for every S c X satisfying 1 s IS] s 1x1k + 1, where N(S) denotes the neighborhood of S. Note that a co