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Interplay between $\mathbb{Z}_2$-gradings and automorphisms in the Grassmann algebra: a survey (2508.15628v1)
Published 21 Aug 2025 in math.RA
Abstract: Let $F$ be a field of characteristic different from two, and let $E$ be the Grassmann algebra of an infinite-dimensional $F$-vector space $L$. In this paper, we survey recent results concerning automorphisms of order two of $E$ and the corresponding induced superalgebra structures. We also present concrete examples of non-homogeneous automorphisms of $E$, as discussed in \cite{agpkauto, anagomes}. The paper concludes with a conjecture regarding the classification of the superalgebra structures of $E$.
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