Deprecated: $wgMWOAuthSharedUserIDs=false is deprecated, set $wgMWOAuthSharedUserIDs=true, $wgMWOAuthSharedUserSource='local' instead [Called from MediaWiki\HookContainer\HookContainer::run in /var/www/html/w/includes/HookContainer/HookContainer.php at line 135] in /var/www/html/w/includes/Debug/MWDebug.php on line 372
The Ramsey number - MaRDI portal

The Ramsey number (Q540088)

From MaRDI portal





scientific article; zbMATH DE number 5903020
Language Label Description Also known as
English
The Ramsey number
scientific article; zbMATH DE number 5903020

    Statements

    The Ramsey number (English)
    0 references
    0 references
    1 June 2011
    0 references
    Summary: For two given graphs \(G_1\) and \(G_2\), the Ramsey number \(r(G_1, G_2)\) is the smallest integer \(n\) such that for any graph \(G\) of order \(n\), either \(G\) contains \(G_1\) or the complement of \(G\) contains \(G_2\). Let \(K_m\) denote a complete graph of order \(m\) and \(K_n - P_3\) a complete graph of order \(n\) without two incident edges. In this paper, we prove that \(r(K_5 - P_3, K_5) = 25\) without help of computer algorithms.
    0 references

    Identifiers