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Let A be a Hopf algebra and H a coalgebra. We shall describe and classify up to an isomorphism all Hopf algebras E that factorize through A and H: that is E is a Hopf algebra such that A is a Hopf su...
Extending Structures I: Unifying Crossed and Bicrossed Products
Extending Structures I Unifying Crossed Bicrossed Products
2010/11/12
Let H be a group. We define the concept of an extending structure of the group H which consists of a new algebraic structure (S, *) called H-group, two actions and a generalized cocycle satisfying so...