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On Graded Quasi-Cartan Pairs and Twisted Steinberg Algebras (2505.24180v1)
Published 30 May 2025 in math.RA
Abstract: We generalise recent results about quasi-Cartan, Cartan and diagonal subalgebras by introducing graded versions. We show that there is a correspondence between graded algebraic quasi-Cartan/ Cartan/ diagonal pairs and certain graded twisted Steinberg algebras and that the associated graded discrete twist is unique. Our results include all discrete group algebras, and so are more general than the ungraded version.
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