## Abstract We extend the notion of a framed net, introduced by D. Jungnickel, V. C. Mavron, and T. P. McDonough, J Combinatorial Theory A, 96 (2001), 376β387, to that of a __d__βframed net of type β, where __d__ββ₯β2 and 1ββ€ββββ€β__d__β1, and we establish a correspondence between __d__βframed nets o
A note on orthogonal sets of hypercubes
β Scribed by Anthony B. Evans
- Publisher
- John Wiley and Sons
- Year
- 1997
- Tongue
- English
- Weight
- 105 KB
- Volume
- 5
- Category
- Article
- ISSN
- 1063-8539
No coin nor oath required. For personal study only.
β¦ Synopsis
Mutually orthogonal sets of hypercubes are higher dimensional generalizations of mutually orthogonal sets of Latin squares. For Latin squares, it is well known that the Cayley table of a group of order n is a Latin square, which has no orthogonal mate if n is congruent to 2 modulo 4. We will prove an analogous result for hypercubes.
π SIMILAR VOLUMES
Let D be a (v, k, \*)-difference set in a group G. Assume that G has a normal subgroup N such that GΓN is cyclic or nearly cyclic. Under the self-conjugacy assumption on exp(GΓN), we shall give bounds on |N| and \*. The theorem is applicable to a wider variety of parameters for groups, not necessari
For integers m, n β₯ 2, let f (m, n) be the minimum order of a graph where every vertex belongs to both a clique of cardinality m and an independent set of cardinality n. We show that f (m, n) = ( β m -1 + β n -1) 2 .
Zeros of orthogonal polynomials defined with respect to general measures are studied. It is shown that a certain estimate for the minimal distance between zeros holds if and only if the support \(F\) of the measure satisfies a homogeneity condition and Markov's inequality holds on \(F\). C 1994 Acad
Large sets of Steiner systems s ( t , k , n ) exist for all finite t and k with t < k and all infinite n. The vector space analogues exist over a field F for all finite t and k with f < R provided that either v or F is infinite, and n 1 2k -t + 1. This inequality is best possible. o 1995 John Wiley