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
Note on the regular digraphs - MaRDI portal

Note on the regular digraphs (Q1063622)

From MaRDI portal





scientific article; zbMATH DE number 3918398
Language Label Description Also known as
English
Note on the regular digraphs
scientific article; zbMATH DE number 3918398

    Statements

    Note on the regular digraphs (English)
    0 references
    0 references
    1985
    0 references
    If g(r,n) is the minimum number of vertices in an r-regular digraph having girth n, we have the conjecture: \(r\geq 1\), \(n\geq 2\), \(g(r,n)=r(n- 1)+1\). The author gives two sufficient conditions in which this conjecture is true. One of them is: \(r)\lfloor n/2\rfloor -1)<n.\)
    0 references
    regular digraph
    0 references
    girth
    0 references
    0 references

    Identifiers