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20242026
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math.QA2026

On Split Forms of Fusion Categories

César Galindo

We formulate split Galois descent for fusion categories through framed equivalences, reducing the existence of a split form to a group-theoretic splitting problem. The associated d…

math.QA2026

Fiber Functors of Equivariantizations of Finite Tensor Categories

César Galindo, Claudia Gallego, Yiby Morales

Let be a finite group acting on a finite tensor category . We classify fiber functors on the equivariantization in terms of equivariant exact modul…

math.QA2026

A Complexity Dichotomy for Quantum Invariants of 3-Manifolds

César Galindo

We determine the complexity of exact evaluation of the Reshetikhin--Turaev and Turaev--Viro invariants of closed connected oriented 3-manifolds, with the underlying tensor category…

math.QA2025

Categorical Fermionic Actions and Minimal Modular Extensions

César Galindo, César F. Venegas-Ramírez

We define fermionic actions of finite super-groups on fermionic fusion categories and establish necessary and sufficient conditions for their existence. Our main result characteriz…

math.QA2025

Braided zesting and its applications

Colleen Delaney, César Galindo, Julia Plavnik +2

We give a rigorous development of the construction of new braided fusion categories from a given category known as zesting. This method has been used in the past to provide categor…

math.QA2024

On braided and ribbon unitary fusion categories

César Galindo

We prove that every braiding on a unitary fusion category is automatically unitary, and that every unitary braided fusion category admits a unique unitary ribbon structure.