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Finite presentability of universal central extensions of sln(R)
Journal of Algebra ( IF 0.9 ) Pub Date : 2021-02-01 , DOI: 10.1016/j.jalgebra.2020.09.016
Efim Zelmanov , Zezhou Zhang

Abstract In this paper we discuss finite presentability of the universal central extensions of Lie algebras sl n ( R ) , where n ≥ 3 and R is a unital associative k-algebra. We show that a universal central extension is finitely presented if and only if the algebra R is finitely presented.

中文翻译:

sln(R) 的通用中心扩展的有限可表示性

摘要 在本文中,我们讨论了李代数 sl n ( R ) 的普遍中心扩展的有限可表示性,其中 n ≥ 3 且 R 是单位结合 k-代数。我们表明,当且仅当代数 R 是有限呈现的,通用中心扩展是有限呈现的。
更新日期:2021-02-01
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