Derivations of the Lie algebra of strictly upper triangular matrices over a commutative ring
For an arbitrary commutative ring with identity \(R\), all \(n\times n\) matrices over \(R\), denoted by \(\text{gl}(n,R)\), is a Lie algebra under the usual operations of matrices and it is called the general linear Lie algebra. Let \(N(n, R)\) denotes the subalgebra consisting of all strictly upper triangular matrices, the authors of the paper describe an explicit form of all the derivations of it.
scientific article; zbMATH DE number 5167482