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arXiv · 2509.05805

Is the projective cover of the trivial module in characteristic $11$ for the sporadic simple Janko group $J_4$ a permutation module?

Jürgen Müller
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Abstract

We determine the ordinary character of the projective cover of the trivial module in characteristic $11$ for the sporadic simple Janko group $J_4$, and answer the question posed in the title.

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BibTeXRIS

Jürgen Müller. 2025-09-06. Is the projective cover of the trivial module in characteristic $11$ for the sporadic simple Janko group $J_4$ a permutation module?. https://doi.org/10.1016/j.jalgebra.2025.10.018

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