可提升群、可略上同调与海森堡表示
数论
2020-12-15 v3
摘要
我们考虑模 p 表示提升为模 p^2 表示的问题，涉及以下情形的表示：（i）有限群；（ii）抽象域的绝对伽罗瓦群；以及（iii）局部与整体域的绝对伽罗瓦群。
引用
@article{arxiv.2009.01301,
title = {Liftable groups, negligible cohomology and Heisenberg representations},
author = {Chandrashekhar B. Khare and Michael Larsen},
journal= {arXiv preprint arXiv:2009.01301},
year = {2020}
}
备注
submitted for proceedings of the International Colloquium on Arithmetic Geometry held at TIFR, Mumbai in January 2020. In this version the results on liftable finite groups are improved due to a remark of Ali Cheraghi