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New Upper and Lower Bounds for Ramsey Numbers

โœ Scribed by Huang Yi Ru; Yang Jian Sheng


Publisher
Elsevier Science
Year
2001
Tongue
English
Weight
76 KB
Volume
22
Category
Article
ISSN
0195-6698

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๐Ÿ“œ SIMILAR VOLUMES


New Upper Bounds for Ramsey Numbers
โœ Y.R Huang; K.M Zhang ๐Ÿ“‚ Article ๐Ÿ“… 1998 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 79 KB

The Ramsey number R(G 1 , G 2 ) is the smallest integer p such that for any graph Some new upper bound formulas are obtained for R(G 1 , G 2 ) and R(m, n), and we derive some new upper bounds for Ramsey numbers here.

Lower bounds for lower Ramsey numbers
โœ Ralph Faudree; Ronald J. Gould; Michael S. Jacobson; Linda Lesniak ๐Ÿ“‚ Article ๐Ÿ“… 1990 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 310 KB ๐Ÿ‘ 1 views

## Abstract For any graph __G__, let __i__(__G__) and ฮผ;(__G__) denote the smallest number of vertices in a maximal independent set and maximal clique, respectively. For positive integers __m__ and __n__, the lower Ramsey number __s__(__m, n__) is the largest integer __p__ so that every graph of or

New Lower Bounds for Ramsey Numbers of G
โœ Felix Lazebnik; Dhruv Mubayi ๐Ÿ“‚ Article ๐Ÿ“… 2002 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 146 KB ๐Ÿ‘ 1 views

## dedicated to the memory of rodica simion Let G be an r-uniform hypergraph. The multicolor Ramsey number r k G is the minimum n such that every k-coloring of the edges of the complete r-uniform hypergraph K r n yields a monochromatic copy of G. Improving slightly upon results from M. Axenovich,

New lower bounds of some diagonal Ramsey
โœ Filip Guldan; Pavel Tomasta ๐Ÿ“‚ Article ๐Ÿ“… 1983 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 122 KB ๐Ÿ‘ 1 views

A new construction of self-complementary graphs containing no Klo or K , is described. This construction gives the Ramsey number lower bounds r(10,lO) 2 458 and r(1 1,l 1 ) 2 542. The problem of determining the Ramsey numbers is known to be very difficult and so we are often satisfied with partial

An upper bound for some ramsey numbers
โœ Andrew Thomason ๐Ÿ“‚ Article ๐Ÿ“… 1988 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 307 KB ๐Ÿ‘ 1 views

New upper bounds for the ramsey numbers r ( k , I ) are obtained. In particular it is shown there is a constant A such that The ramsey number r(k, l ) is the smallest integer n, such that any coloring with red and blue of the edges of the complete graph K , of order n yields either a red K , subgra

Upper bounds for ramsey numbers R(3, 3,
โœ Wan, Honghui ๐Ÿ“‚ Article ๐Ÿ“… 1997 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 81 KB ๐Ÿ‘ 2 views

In this paper we show that for n โ‰ฅ 4, R(3, 3, . . . , 3) < n!( e-e -1 + 3 2 ) + 1. Consequently, a new bound for Schur numbers is also given. Also, for even n โ‰ฅ 6, the Schur number S n is bounded by S n < n!( e-e -1 + 3 2 ) -n + 2.