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
Coloring perfect \((K_ 4\)-e)-free graphs - MaRDI portal

Coloring perfect \((K_ 4\)-e)-free graphs (Q1071025)

From MaRDI portal





scientific article; zbMATH DE number 3937192
Language Label Description Also known as
English
Coloring perfect \((K_ 4\)-e)-free graphs
scientific article; zbMATH DE number 3937192

    Statements

    Coloring perfect \((K_ 4\)-e)-free graphs (English)
    0 references
    1987
    0 references
    This note proves the Strong Perfect Graph Conjecture for (K\({}_ 4-e)\)- free graphs from first principles. The proof directly yields an \(O(pn^ 2)\) algorithm for p-coloring perfect \((K_ 4-e)\)-free graphs. (Note: a previously published proof of this result by Parthasarathy and Ravindra is incorrect.)
    0 references
    strong perfect graph conjecture
    0 references
    algorithm
    0 references
    coloring
    0 references
    (K4-e)-free graphs
    0 references
    0 references

    Identifiers