Abstract
Let us defineG(n) to be the maximum numberm such that every graph onn vertices contains at leastm homogeneous (i.e. complete or independent) subgraphs. Our main result is exp (0.7214 log2 n) ≧G(n) ≧ exp (0.2275 log2 n), the main tool is a Ramsey—Turán type theorem.
We formulate a conjecture what supports Thomason’s conjecture\(\mathop {\lim }\limits_{k \to \infty } \) R(k, k)1/k = 2.
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References
P. Erdős, On the combinatorial problems which I would most like to see solved,Combinatorica 1 (1981), 25–42.
P. Erdős, On the number of complete subgraphs contained in certain graphs,Magyar Tud. Akad. Mat. Kut. Int. Közl. VII.series A, (3) (1962), 459–464.
P. Erdős, Some remarks on the theory of graphs,Bull. Amer. Math. Soc. 53 (1947), 292–294.
P. Erdős andG. Szekeres, A combinatorial problem in geometry,Compositio Math. 2 (1935), 463–470.
P. Erdős andE. Szemerédi, On a Ramsey type theorem,Period. Math. Hung. 2 (1972), 295–299.
A. W. Goodman, On sets of acquintances and strangers at any party,Amer. Math. Monthly 66 (1959), 778–783.
A. Thomason, On finite Ramsey numbers,Europ. J. Combinatorics 3 (1982), 263–273.