Abstract
We consider the factorization problem for bialgebras. Let L and H be algebras and coalgebras (but not necessarily bialgebras) and consider two maps R : H ⊗ L → L ⊗ H and W : L ⊗ H → H ⊗ L. We introduce a product K = L W ⋈ R H and we give necessary and sufficient conditions for K to be a bialgebra. Our construction generalizes products introduced by Majid and Radford. Also, some of the pointed Hopf algebras that were recently constructed by Beattie, Dăscălescu and Grünenfelder appear as special cases.
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Caenepeel, S., Ion, B., Militaru, G. et al. The Factorization Problem and the Smash Biproduct of Algebras and Coalgebras. Algebras and Representation Theory 3, 19–42 (2000). https://doi.org/10.1023/A:1009917210863
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DOI: https://doi.org/10.1023/A:1009917210863