Sven Wiesner

activity

20222026

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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, Röhrle, Stump, and Yoshinaga in 2024 which focused on arrangemen…

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…

On Universal derivations for multiarrangements

Extendability of the B2​-arrangement

Extendability of the $B_{2}$ -arrangement