The index of a Lie algebra is an important algebraic invariant. In 2000, Vladimir Dergachev and Alexandre Kirillov defined seaweed subalgebras of $\mathfrak{gl}_n$ (or $\mathfrak{sl}_n$) and provided a formula for the index of a seaweed algebra using a certain graph, a so called meander. In a recent paper, Vincent Coll, Andrew Mayers, and Nick Mayers defined a new statistic for partitions, namely the index of a partition, which arises from seaweed Lie algebras of type A. At the end of their paper, they presented an interesting conjecture, which involves integer partitions into odd parts. Motivated by their work, in this paper, we exploit various index statistics and the index weight generating functions for partitions. In particular, we examine their conjecture by considering the generating function for partitions into odd parts. We will also reprove another result from their paper using generating functions.
@article{10_37236_9054,
author = {Seunghyun Seo and Ae Ja Yee},
title = {Index of seaweed algebras and integer partitions},
journal = {The electronic journal of combinatorics},
year = {2020},
volume = {27},
number = {1},
doi = {10.37236/9054},
zbl = {1435.05026},
url = {http://geodesic.mathdoc.fr/articles/10.37236/9054/}
}
TY - JOUR
AU - Seunghyun Seo
AU - Ae Ja Yee
TI - Index of seaweed algebras and integer partitions
JO - The electronic journal of combinatorics
PY - 2020
VL - 27
IS - 1
UR - http://geodesic.mathdoc.fr/articles/10.37236/9054/
DO - 10.37236/9054
ID - 10_37236_9054
ER -
%0 Journal Article
%A Seunghyun Seo
%A Ae Ja Yee
%T Index of seaweed algebras and integer partitions
%J The electronic journal of combinatorics
%D 2020
%V 27
%N 1
%U http://geodesic.mathdoc.fr/articles/10.37236/9054/
%R 10.37236/9054
%F 10_37236_9054
Seunghyun Seo; Ae Ja Yee. Index of seaweed algebras and integer partitions. The electronic journal of combinatorics, Tome 27 (2020) no. 1. doi: 10.37236/9054
