Results 141 to 150 of about 55,778 (257)

Curious cyclic sieving on increasing tableaux [PDF]

open access: yesEnumerative Combinatorics and Applications, 2022
Christian Gaetz   +3 more
doaj   +1 more source

Block-transitive Steiner t-designs and sporadic simple groups(区传递Steiner t-设计与散在单群)

open access: yesZhejiang Daxue xuebao. Lixue ban
The study of t-designs with certain highly symmetric properties and the classification of their automorphism groups is one of the important topics of algebraic combinatorics.
庞璇(PANG Xuan)   +1 more
doaj   +1 more source

Combinatoric of syzygies for semigroup algebras

open access: yesCollectanea Mathematica, 1998
We describe how the graded minimal resolution of certain semigroup algebras is related to the combinatorics of some simplicial complexes. More precisely, we make explicit the isomorphism between the Tor groups of the resolution and the Koszul homology. We obtain characterizations of the Cohen-Macaulay and Gorenstein conditions.
Campillo, Antonio   +3 more
openaire   +2 more sources

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