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BiHom-four-angle Hopf modules and BiHom-Yetter-Drinfel'd modules

2026/08/05 by Dongdong Yan, Xiaoqian Liu
Mathematics · #math.QA #msc:16T05 #msc:18M15 #msc:17A30

paper · pdf

24pages

arxiv created 2026/08/05 · arxiv updated 2026/08/06

Abstract

In this paper, we introduce the notion of four-angle Hopf modules over a BiHom-Hopf algebra H. We show that the category HH\mathfrakMHH of BiHom-four-angle Hopf modules admits a strict monoidal category structure with respect to either the BiHom-tensor product ⊗H or the BiHom-cotensor product \squareH as its monoidal product. We prove that the category YDHH(m,n,p,q) of BiHom-(m,n,p,q)-Yetter-Drinfel'd modules with parameters m,n,p,q∈ℤ forms a strict braided monoidal category equipped with a new monoidal product. Furthermore, we establish monoidal equivalences between the monoidal categories YDHH(m,n,p,q) and HH\mathfrakMHH, where HH\mathfrakMHH carries either ⊗H or \squareH as its monoidal product. Finally, we construct braiding structures for the monoidal categories (HH\mathfrakMHH,⊗H) and (HH\mathfrakMHH,\squareH).

Citations