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arXiv · 2108.13135

Derived deformation rings allowing congruences]{Derived deformation rings allowing congruences

Yichang Cai
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Abstract

We generalize a result of Galatius and Venkatesh which relates the graded module of cohomology of locally symmetric spaces to the graded homotopy ring of the derived Galois deformation rings, by removing certain assumptions, and in particular by allowing congruences inside the localized Hecke algebra.

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Yichang Cai. 2021-08-30. Derived deformation rings allowing congruences]{Derived deformation rings allowing congruences. https://arxiv.org/abs/2108.13135

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