A Result on Ext over Kac-Moody Algebras

被引：0

作者：

Neidhardt W. ^{[1
]}

机构：

[1] Department of Mathematics, Edmonds Community College, 20000 68th Avenue West, Lynnwood

来源：

Algebras and Representation | 1998年 / 1卷 / 2期

关键词：

Kac-Moody; Lie algebras; Verma modules;

D O I：

10.1023/A:1009933409824

中图分类号：

学科分类号：

摘要：

We prove the following result for a not necessarily symmetrizable Kac-Moody algebra: Let x, y ∈ W with x ≥ y, and let λ ∈ P+. If n = l(x)-l(y), then dim ExtnC(λ)(M(x·λ), L(y·λ)) = 1.

引用

页码：161 / 168

页数：7

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