The most familiar construction of graphs whose clique number is much smaller than their chromatic number is due to Mycielski, who constructed a sequence G, of triangle-free graphs with ,y(G,) = n. In this article, w e calculate the fractional chromatic number of G, and show that this sequence of num
Circular chromatic number and Mycielski construction
β Scribed by Hossein Hajiabolhassan; Xuding Zhu
- Publisher
- John Wiley and Sons
- Year
- 2003
- Tongue
- English
- Weight
- 94 KB
- Volume
- 44
- Category
- Article
- ISSN
- 0364-9024
No coin nor oath required. For personal study only.
β¦ Synopsis
Abstract
This paper gives a sufficient condition for a graph G to have its circular chromatic number equal to its chromatic number. By using this result, we prove that for any integer tββ₯β1, there exists an integer n such that for all $k \ge n, \chi _c (M^t(K_k)),= \chi(M^t(K_k))$. Β© 2003 Wiley Periodicals, Inc. J Graph Theory 44: 106β115, 2003
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