Power-integral matrices over number fields: the Drazin inverse, pseudo-determinant, and numerical semigroups

Published 29 Jun 2026 in math.NT and math.CO | (2606.30876v1)

Abstract: We investigate matrices with entries in a number field such that some positive power has all its entries in the corresponding ring of integers. Our work generalizes previous results in several directions and we find applications to numerical semigroups.

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