We establish an explicit combinatorial/homological characterization of supports for linear degenerations of flag varieties. For such purpose, we introduce the concept of an excessive multisegment. It provides a new class of combinatorial objects counted by Motzkin numbers.
Motzkin Combinatorics in Linear Degenerations of the Flag Variety / Irelli, G. C.; Esposito, F.; Marietti, M.. - In: INTERNATIONAL MATHEMATICS RESEARCH NOTICES. - ISSN 1073-7928. - STAMPA. - 2023:22(2023), pp. 19184-19204. [10.1093/imrn/rnad063]
Motzkin Combinatorics in Linear Degenerations of the Flag Variety
Marietti M.
2023-01-01
Abstract
We establish an explicit combinatorial/homological characterization of supports for linear degenerations of flag varieties. For such purpose, we introduce the concept of an excessive multisegment. It provides a new class of combinatorial objects counted by Motzkin numbers.File in questo prodotto:
Non ci sono file associati a questo prodotto.
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
