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
scientific article - MaRDI portal

scientific article

From MaRDI portal

Publication:3077448

Jump to:navigation, search

zbMATH Open1209.20066MaRDI QIDQ3077448

Abdullahi Umar

Publication date: 22 February 2011

Title: zbMATH Open Web Interface contents unavailable due to conflicting licenses.

zbMATH Keywords

idempotents nilpotents partial one-one transformations heights of transformations fixed points of transformations waists of transformations

Mathematics Subject Classification ID

Exact enumeration problems, generating functions (05A15) Factorials, binomial coefficients, combinatorial functions (05A10) Semigroups of transformations, relations, partitions, etc. (20M20) Inverse semigroups (20M18)

Related Items (2)

Combinatorics of nilpotents in symmetric inverse semigroups ⋮ Combinatorial results for order-preserving partial injective contraction mappings

Uses Software

OEIS

This page was built for publication:

Retrieved from "https://portal.mardi4nfdi.de/w/index.php?title=Publication:3077448&oldid=16138066"