Lie automorphisms of incidence algebras
Abstract
Let X be a finite connected poset and K a field. We give a full description of the Lie automorphisms of the incidence algebra I(X,K). In particular, we show that they are in general not proper.
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Let X be a finite connected poset and K a field. We give a full description of the Lie automorphisms of the incidence algebra I(X,K). In particular, we show that they are in general not proper.