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math.RT2026
On a question by G. Navarro on the character field generation of odd-degree characters
Ulrich Thiel
In [Publ. Mat. 67 (2023), no. 1, 173-198], G. Navarro asked whether the character field of an odd-degree character of a finite group is generated by a single character value. We sh…
math.RT2025
Computing the center of a fusion category
Fabian Mäurer, Ulrich Thiel
We present an algorithm for explicitly computing the categorical (Drinfeld) center of a pivotal fusion category. Our approach is based on decomposing the images of simple objects u…