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Correction to “Irreducible modules of modular Lie superalgebras and super version of the first Kac-Weisfeiler conjecture”

Published online by Cambridge University Press:  27 October 2025

Bin Shu*
Affiliation:
School of Mathematical Sciences, Ministry of Education Key Laboratory of Mathematics and Engineering Applications & Shanghai Key Laboratory of PMMP, East China Normal University , NO. 500 Dongchuan Road, Shanghai 200241, China
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Abstract

In the article “Irreducible modules of modular Lie superalgebras and super version of the first Kac-Weisfeiler conjecture, Canad. Math. Bull. 67 (2024), no. 3, 554–573.” The statement in Theorem 4.7 is improper, which is fixed here. Theorem 4.7 is an isolated result in the article. This correction does not influence any arguments and any main results after that in the original article.

Information

Type
Corrigendum
Copyright
© The Author(s), 2025. Published by Cambridge University Press on behalf of Canadian Mathematical Society

Theorem 4.7 in [Reference Shu1] should be corrected as follows. All notations and assumptions are the same as in [Reference Shu1]. Especially, all Lie superalgebras are assumed to be finite-dimensional.

Theorem 0.1 Let ${\mathfrak {g}}$ be a solvable Lie superalgebra. Any irreducible module V of ${\mathfrak {g}}$ is associated with some $\chi \in {\mathfrak {g}}_{\bar {0}}^*$ , which has dimension where ${\mathfrak {h}}$ is a subalgebra with $\chi ({\mathfrak {h}}^{(1)})=0$ for its derived subalgebra ${\mathfrak {h}}^{(1)}:=[{\mathfrak {h}},{\mathfrak {h}}]$ , and V contains a one-dimensional ${\mathfrak {h}}$ -module, and n depends on ${\mathfrak {h}}$ .

Proof For any given irreducible ${\mathfrak {g}}$ -module $(V,\rho )$ , V becomes an irreducible ${\mathfrak {g}}_p$ -modules associated with $\Upsilon \in ({\mathfrak {g}}_{\bar {0}})_p^*$ where ${\mathfrak {g}}_p$ is a minimal finite-dimensional p-envelope of ${\mathfrak {g}}$ with ${\mathfrak {g}}_p=({\mathfrak {g}}_{\bar {0}})_p+{\mathfrak {g}}_{\bar {1}}$ such that $({\mathfrak {g}}_{\bar {0}})_p$ is a p-envelope of ${\mathfrak {g}}_{\bar {0}}$ (see [Reference Shu1, Lemma A.3]). Moreover, V is associated with $\chi :=\Upsilon |_{{\mathfrak {g}}_{\bar {0}}}\in {\mathfrak {g}}^*_{\bar {0}}$ . By [Reference Shu1, Corollary 4.6], there exists a restricted subalgebra $\frak {H}$ of ${\mathfrak {g}}_p$ with $\Upsilon (\frak {H}^{(1)})=0$ such that ${V\cong U_\chi ({\mathfrak {g}}_p)\otimes _{U_\chi (\frak {H})}S}$ where $S\subset V$ is a one-dimensional $\frak {H}$ -module. Correspondingly, .

Take ${\mathfrak {h}}=\frak {H}\cap {\mathfrak {g}}$ . By definition, ${\mathfrak {h}}_{\bar {0}}=\frak {H}_{\bar {0}}\cap {\mathfrak {g}}_{\bar {0}}$ , and ${\mathfrak {h}}_{\bar {1}}=\frak {H}_{\bar {1}}\cap {\mathfrak {g}}_{\bar {1}}=\frak {H}_{\bar {1}}$ . Then ${\chi ({\mathfrak {h}}^{(1)})=0}$ , and ${\mathfrak {h}}$ has one-dimensional module S. Set . Then we have

The proof is completed.

Remark 0.2 When ${\mathfrak {g}}$ is a restricted solvable Lie superalgebra, n coincides with . In this case, the above theorem is actually a strengthened version of [Reference Shu1, Corollary 4.6] on the irreducible modules and their dimensions. So in this special case, the theorem implies [Reference Shu1, Proposition 5.4(1)] which states:

  • Each irreducible $U_\chi ({\mathfrak {g}})$ -module V for a restricted solvable Lie superalgebra ${\mathfrak {g}}$ is associated with certain restricted subalgebra ${\mathfrak {h}}$ with $\chi ({\mathfrak {h}}^{(1)})=0$ , such that V has dimension

    and there is a one-dimensional ${\mathfrak {h}}$ -submodule in V.

Footnotes

This work is partially supported by the National Natural Science Foundation of China (Grant Nos. 12071136, 12271345), supported in part by the Science and Technology Commission of Shanghai Municipality (No. 22DZ2229014).

References

Shu, B., Irreducible modules of modular Lie superalgebras and super version of the first Kac-Weisfeiler conjecture . Canadian Mathematical Bulletin 67(2024), 554573.10.4153/S0008439523000966CrossRefGoogle Scholar