Abstract
We finish off the classification of the endo-trivial modules of finite groups with Sylow 2-subgroups isomorphic to a semi-dihedral 2-group started by Carlson, Mazza and Thévenaz in their article Endotrivial modules over groups with quaternion or semi-dihedral Sylow 2-subgroup published in 2013.
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Acknowledgements
The authors would like to thank Jesper Grodal, Burkhard Külshammer, Gunter Malle, Nadia Mazza, Benjamin Sambale, Mandi Schaeffer Fry, Gernot Stroth, Jacques Thévenaz, and Rebecca Waldecker for helpful hints and discussions related to the content of this article. They are grateful to the referee for detailed comments and suggestions.
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Dedicated to Jon Carlson on the occasion of his 80th Birthday and to Jacques Thévenaz on the occasion of his 70th Birthday.
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The first author was partially supported by the Japan Society for Promotion of Science (JSPS), Grant-in-Aid for Scientific Research (C) 19K03416, 2019–2021. The second author acknowledges financial support by DFG SFB/TRR 195. This piece of work is part of Project A18 thereof.
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Koshitani, S., Lassueur, C. Trivial source endo-trivial modules for finite groups with semi-dihedral Sylow 2-subgroups. Beitr Algebra Geom 63, 233–246 (2022). https://doi.org/10.1007/s13366-021-00581-4
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DOI: https://doi.org/10.1007/s13366-021-00581-4
Keywords
- Endo-trivial modules
- Semi-dihedral 2-groups
- Schur multiplier
- Trivial source modules
- p-permutation modules
- Special linear and unitary groups