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Mutation of type $D$ friezes (1904.12078v2)
Published 26 Apr 2019 in math.CO and math.RA
Abstract: In this article we study mutation of friezes of type $D$. We provide a combinatorial formula for the entries in a frieze after mutation. The two main ingredients in the proof include a certain transformation of a type $D$ frieze into a sub pattern of a frieze of type $A$ and the mutation formula for type $A$ friezes recently found by Baur et al.