Finite presentability of universal central extensions of sl(n), II

摘要

In this note we connect finite presentability of a Jordan algebra to finite presentability of its Tits-Kantor-Koecher algebra. Through this we complete our discussion of finite presentability of universal central extensions of sl(n)(A), A a k-algebra, initiated in [12], and answer a question raised by Shestakov-Zelmanov [10] in the positive. (C) 2021 Elsevier Inc. All rights reserved.