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math.NT2025
Effective Artin-Schreier-Witt theory for curves
Christophe Levrat, Rubén Muñoz--Bertrand
We present an algorithm which, given a connected smooth projective curve over an algebraically closed field of characteristic and its Hasse--Witt matrix, as well as a pos…
math.NT2020
Pseudovaluations on the De Rham-Witt complex
Rubén Muñoz--Bertrand
For a polynomial ring over a commutative ring of positive characteristic, we define on the associated de Rham-Witt complex a set of functions, and show that they are pseudovaluatio…