Khadija Larabi

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20242026

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math.RA2026

Conjugacy classes of regular integer matrices

Claus Hertling, Khadija Larabi

This paper is devoted to the theory of $G L_{n} (Z)$ -conjugacy classes of regular integer $n \times n$ matrices. Such a matrix is $G L_{n} (Q)$ -conjugate to the companio…

math.RA2026

Semigroups from full lattices in commutative $Q$ -algebras

Claus Hertling, Khadija Larabi

The full lattices in a finite dimensional commutative $Q$ -algebra form a commutative semigroup. In the case of an algebraic number field the top part of a certain quotien…

Conjugacy classes of regular integer matrices

Semigroups from full lattices in commutative Q-algebras

Semigroups from full lattices in commutative $Q$ -algebras