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math.AG2025
A Class of Incomplete Character Sums
Lei Fu, Daqing Wan
Using -adic cohomology of tensor inductions of lisse -sheaves, we study a class of incomplete character sums.
math.AG2024
Revisiting Dwork cohomology: Visibility and divisibility of Frobenius eigenvalues in rigid cohomology
Daqing Wan, Dingxin Zhang
We study Frobenius eigenvalues of the compactly supported rigid cohomology of a variety defined over a finite field of elements via Dwork's method. A couple of arithmetic conse…