Title
A minimaj-preserving crystal on ordered multiset partitions
Abstract
We provide a crystal structure on the set of ordered multiset partitions, which recently arose in the pursuit of the Delta Conjecture. This conjecture was stated by Haglund, Remmel and Wilson as a generalization of the Shuffle Conjecture. Various statistics on ordered multiset partitions arise in the combinatorial analysis of the Delta Conjecture, one of them being the minimaj statistic, which is a variant of the major index statistic on words. Our crystal has the property that the minimaj statistic is constant on connected components of the crystal. In particular, this yields another proof of the Schur positivity of the graded Frobenius series of the generalization Rn,k due to Haglund, Rhoades and Shimozono of the coinvariant algebra Rn. The crystal structure also enables us to demonstrate the equidistributivity of the minimaj statistic with the major index statistic on ordered multiset partitions.
Year
DOI
Venue
2018
10.1016/j.aam.2017.11.006
Advances in Applied Mathematics
Keywords
Field
DocType
primary,secondary
Discrete mathematics,Combinatorics,Statistic,Multiset,Mathematical analysis,Connected component,Major index,Combinatorial analysis,Conjecture,Mathematics
Journal
Volume
ISSN
Citations 
95
0196-8858
1
PageRank 
References 
Authors
0.45
2
7
Name
Order
Citations
PageRank
Georgia Benkart110.45
Laura Colmenarejo210.45
Pamela E. Harris321.17
Rosa C. Orellana411.46
Greta Panova5336.67
Anne Schilling6176.74
Martha Yip710.79