Quasi-Lie structure of twisted derivations of Laurent polynomials
Richard, Lionel · Silvestrov, Sergei
Original · EN
Hartwig, Larsson and the second author in [J. Algebra, 2005] defined a bracket on sigma-derivations of a commutative algebra. We show that this bracket preserves inner derivations, and based on this obtain some structural results on sigma-derivations on Laurent polynomials in one variable.
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