Mathematical  Culture and Thought

Mathematical Culture and Thought

Cohomology theories and changing the weight of Galios representations

Document Type : Original

Authors
1 IPM,Tehran,Iran
2 IPM, Tehran, Iran
10.30504/mct.2025.1539.2080
Abstract
In this paper, we first introduce various cohomology theories and their relationship with Galois group representations. Then, we present a method that naturally associates certain Galois group representations with Hodge-Tate weights greater than one to representations with lower weights, and under certain conditions, to representations with weights zero and one. More precisely, we prove the existence of a fully faithful functor from the category of graded sparse regular representations with good prismatic reduction of the Galois group to the category of graded representations with good prismatic reduction and weights zero and one.
Keywords
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Articles in Press, Accepted Manuscript
Available Online from 03 December 2025

  • Receive Date 15 March 2025
  • Revise Date 10 October 2025
  • Accept Date 11 October 2025
  • Publish Date 03 December 2025