Derivations of Rings of Infinite Matrices

Author: Słowik R.  

Publisher: Taylor & Francis Ltd

E-ISSN: 1532-4125|43|8|3433-3441

ISSN: 0092-7872

Source: Communications in Algebra, Vol.43, Iss.8, 2015-08, pp. : 3433-3441

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Abstract

For any associative unital ring R we investigate two rings – the ring of all infinite upper triangular matrices and the ring of all infinite matrices with the finite number of nonzero entries in each column. We describe derivations of these rings. We prove that every derivation of any of them is a sum of an inner derivation and a derivation which is induced by some derivation of R.