scholarly journals Universal central extensions of linear groups over rings of non-commutative Laurent polynomials, associated $K_1$-groups and $K_2$-groups

2021 ◽  
Vol 45 (1) ◽  
Author(s):  
Ryusuke Sugawara
1994 ◽  
Vol 06 (02) ◽  
pp. 207-225 ◽  
Author(s):  
M. S. RAGHUNATHAN

The following is an account, self-contained and essentially expository, of the general theory of universal central extensions of groups with applications to some important classes of groups: perfect groups, abelian groups and connected Lie groups. The notation is occasionally different from that in the text — this should not cause any confusion.


2014 ◽  
Vol 34 (2) ◽  
pp. 313-330
Author(s):  
Qingcheng ZHANG ◽  
Zhu WEI ◽  
Yingna CHU ◽  
Yongping ZHANG

2018 ◽  
Vol 17 (07) ◽  
pp. 1850134 ◽  
Author(s):  
J. L. Castiglioni ◽  
X. García-Martínez ◽  
M. Ladra

In this paper, we study the universal central extension of a Lie–Rinehart algebra and we give a description of it. Then we study the lifting of automorphisms and derivations to central extensions. We also give a definition of a non-abelian tensor product in Lie–Rinehart algebras based on the construction of Ellis of non-abelian tensor product of Lie algebras. We relate this non-abelian tensor product to the universal central extension.


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