93 citations · 159 across the 27 of their papers we have counts for
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math.RT2020
On sheaves in finite group representations
Tengfei Xiong, Fei Xu
Given a general finite group , we consider several categories built on it, their Grothendieck topologies and resulting sheaf categories. For a certain class of transporter categ…
math.NT2020
On indefinite and potentially universal quadratic forms over number fields
Fei Xu, Yang Zhang
A number field admits a binary integral quadratic form which represents all integers locally but not globally if and only if the class number of is bigger than one. In this…