Atomic decomposition of characters and crystals
Atomic decomposition of characters and crystals
复制标题
角色和晶体的原子分解
DOI:
10.1016/j.aim.2020.107453
复制
发表时间:
2021
影响因子:
1.7
通讯作者:
Lenart, Cristian
中科院分区:
文献类型:
--
作者:
Lecouvey, Cédric;Lenart, Cristian
Lascoux stated that the type A Kostka-Foulkes polynomials K λ, μ (t) expand positively in terms of so-called atomic polynomials. For any semisimple Lie algebra, the former polynomial is a t-analogue of the multiplicity of the dominant weight μ in the irreducible representation of highest weight λ. We formulate the atomic decomposition in arbitrary type, and view it as a strengthening of the monotonicity of K λ, μ (t). We also define a combinatorial version of the atomic decomposition, as a decomposition of a modified crystal graph. We prove that this stronger version holds in type A (which provides a new, conceptual approach to Lascoux's statement), in types B, C, and D in a stable range for t= 1, as well as in some other cases, while we conjecture that it holds more generally. Another conjecture stemming from our work leads to an efficient computation of K λ, μ (t). We also give a geometric interpretation.
登录
查看更多内容
DOI:
--
发表时间:
2018
期刊:
影响因子:
--
作者:
J. Rasmussen
通讯作者:
J. Rasmussen
DOI:
10.1016/0012-365x(73)90094-0
发表时间:
1973
期刊:
Discret. Math.
影响因子:
--
作者:
Tom Brylawski
通讯作者:
Tom Brylawski
影响因子:
0.7
作者:
Seung Jin Lee
通讯作者:
Seung Jin Lee
DOI:
--
发表时间:
1971
期刊:
--
影响因子:
--
作者:
I. G. MacDonald
通讯作者:
I. G. MacDonald
DOI:
--
发表时间:
2012
期刊:
影响因子:
--
作者:
J. Hilgert
通讯作者:
J. Hilgert