M. Kreuzer

collaborators

3 papers

math.GR2026

Trace Minimization and Roots in $PSL (2, R)$

Martin Kreuzer, Anja Moldenhauer, Gerhard Rosenberger

Suppose that $A, B \in PSL (2, R)$ generate a non-elementary Fuchsian group. Let $m, n \in N_{+}$ , and let $R, S \in PSL (2, R)$ such that $R^{m} = A$ and $S…

math.GR2026

Subgroups of Cyclically Amalgamated Free Products

Martin Kreuzer, Anja Moldenhauer, Gerhard Rosenberger

Given a group $G = H_{1} *_{A} H_{2}$ which is the free product of two finitely generated groups $H_{1}$ and $H_{2}$ with amalgamation over a cyclic subgroup $A$ which is malnormal in $G$ …

cs.IT2026

Code Equivalence, Point Set Equivalence, and Polynomial Isomorphism

Martin Kreuzer

The linear code equivalence (LCE) problem is shown to be equivalent to the point set equivalence (PSE) problem, i.e., the problem to check whether two sets of points in a projectiv…

Trace Minimization and Roots in PSL(2,R)

Subgroups of Cyclically Amalgamated Free Products

Code Equivalence, Point Set Equivalence, and Polynomial Isomorphism

Trace Minimization and Roots in $PSL (2, R)$