Is the projective cover of the trivial module in characteristic 11 for the sporadic simple Janko group J4 a permutation module?

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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Publication Details

Journal
Journal of Algebra
Published
2025-10-30
DOI
https://doi.org/10.1016/j.jalgebra.2025.10.018
Primary Topic
Algebraic Geometry and Number Theory
Type
article
Field-Weighted Citation Impact
0.00
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article

Is the projective cover of the trivial module in characteristic 11 for the sporadic simple Janko group J4 a permutation module?

Jürgen Müller
Journal of Algebra
Algebraic Geometry and Number Theory
article

Is the projective cover of the trivial module in characteristic 11 for the sporadic simple Janko group J4 a permutation module?

Jürgen Müller
article en

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.

Journal of AlgebraVol. 689
RWTH Aachen University (DE)
Openalex Percentile: Top 63%
Algebraic Geometry and Number Theory
DOIOpen Access PDFOpenAlex
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Is the projective cover of the trivial module in characteristic 11 for the sporadic simple Janko group J4 a permutation module? — Jürgen Müller · Journal of Algebra (2025) | TGRS Research Map | TGRS