Let G be a simple graph. The achromatic number Ο(G) is the largest number of colors possible in a proper vertex coloring of G in which each pair of colors is adjacent somewhere in G. For any positive integer m, let q(m) be the largest integer k such that ( k 2 ) β€ m. We show that the problem of dete
On the Achromatic Number of Hypercubes
β Scribed by Yuval Roichman
- Publisher
- Elsevier Science
- Year
- 2000
- Tongue
- English
- Weight
- 96 KB
- Volume
- 79
- Category
- Article
- ISSN
- 0095-8956
No coin nor oath required. For personal study only.
β¦ Synopsis
The achromatic number of a finite graph G, (G), is the maximum number of independent sets into which the vertex set may be partitioned, so that between any two parts there is at least one edge. For an m-dimensional hypercube P m 2 we prove that there exist constants 0<c 1 <c 2 , independent of m, such that c 1 (m2 m&1 ) 1Γ2
(P m 2 ) c 2 (m2 m&1 ) 1Γ2 .
π SIMILAR VOLUMES
## Abstract A __complete coloring__ of a simple graph __G__ is a proper vertex coloring such that each pair of colors appears together on at least one edge. The __achromatic number__ Ο(__G__) is the greatest number of colors in such a coloring. We say a class of graphs is fragmentable if for any po
The achromatic number for a graph G = V E is the largest integer m such that there is a partition of V into disjoint independent sets V 1 V m such that for each pair of distinct sets V i , V j , V i βͺ V j is not an independent set in G. Yannakakis and Gavril (1980, SIAM J. Appl. Math. 38, 364-372) p
## Abstract We draw the __n__βdimensional hypercube in the plane with ${5\over 32}4^{n}-\lfloor{{{{n}^{2}+1}\over 2}}\rfloor {2}^{n-2}$ crossings, which improves the previous best estimation and coincides with the long conjectured upper bound of ErdΓΆs and Guy. Β© 2008 Wiley Periodicals, Inc. J Graph
In this paper, we present randomized algorithms for selection on the hypercube. We identify two variants of the hypercube, namely, the sequential model and the parallel model. In the sequential model, any node at any time can handle only communication along a single incident edge, whereas in the par