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math.CO2025
Boundedness criteria for real quivers of rank 3
Roger Casals, Kenton Ke
We study the boundedness of a mutation class for quivers with real weights. The main result is a characterization of bounded mutation classes for real quivers of rank 3.
math.CO2023
A binary invariant of matrix mutation
Roger Casals
We construct a binary mutation invariant for skew-symmetric integer matrices. The invariant is not an integer congruence invariant for matrices of odd size: we provide examples of…