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math.QA2026
Fusion Quivers
Gregor Schaumann
We develop a categorical approach to quivers and their modules. Naturally this leads to a notion of an action of a monoidal category on quivers. Using this, we construct for a larg…
math.QA2024
Gray categories with duals and their diagrams
John W. Barrett, Catherine Meusburger, Gregor Schaumann
The geometric and algebraic properties of Gray categories with duals are investigated by means of a diagrammatic calculus. The diagrams are three-dimensional stratifications of a c…