Sven Wiesner

collaborators

4 papers

math.CO2025

On Universal derivations for multiarrangements

Takuro Abe, Shota Maehara, Gerhard Roehrle +1

The study of universal derivations for arbitrary multiarrangements and multiplicity functions was initiated by Abe, RÃ¶hrle, Stump, and Yoshinaga in 2024 which focused on arrangeme…

math.CO2025

Free multiderivations of connected subgraph arrangements

Paul MÃ¼cksch, Gerhard Roehrle, Sven Wiesner

Cuntz and KÃ¼hne introduced the class of connected subgraph arrangements $A_{G}$ , depending on a graph $G$ , and classified all graphs $G$ such that the corresponding arrangement $A_G…

math.CO2025

Extendability of the $B_{2}$ -arrangement

Torsten Hoge, Shota Maehara, Sven Wiesner

Let $(A, m)$ be a free multiarrangement, and let $E$ be an extension of $(A, m)$ . It is well known that if $A$ is the Coxeter arrangement of t…

math.CO2025

Inductive Freeness of Ziegler's Canonical Multiderivations for Restrictions of Reflection Arrangements

Torsten Hoge, Gerhard Roehrle, Sven Wiesner

Let $A$ be a free hyperplane arrangement. In 1989, Ziegler showed that the restriction $A "$ of $A$ to any hyperplane endowed with the natural multiplicit…

On Universal derivations for multiarrangements

Free multiderivations of connected subgraph arrangements

Extendability of the B2​-arrangement

Inductive Freeness of Ziegler's Canonical Multiderivations for Restrictions of Reflection Arrangements

Extendability of the $B_{2}$ -arrangement