Liftable groups, negligible cohomology and Heisenberg representations

Chandrashekhar B. Khare; Michael Larsen

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arXiv · 2009.01301

Liftable groups, negligible cohomology and Heisenberg representations

Chandrashekhar B. Khare·Michael Larsen

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Abstract

We consider lifting of mod p representations to mod p^2 representations in the setting of representations of (i) finite groups; (ii) absolute Galois groups of abstract fields; and (iii) absolute Galois groups of local and global fields.

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Chandrashekhar B. Khare, Michael Larsen. 2020-12-13. Liftable groups, negligible cohomology and Heisenberg representations. https://arxiv.org/abs/2009.01301

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