Resumen
In this paper we study the theory of cleft extensions for a weak bialgebra H. Among other results, we determine when two unitary crossed products of an algebra A by H are equivalent and we prove that if H is a weak Hopf algebra, then the categories of H-cleft extensions of an algebra A, and of unitary crossed products of A by H, are equivalent.
| Idioma original | Español |
|---|---|
| Páginas (desde-hasta) | 668-710 |
| Número de páginas | 43 |
| Publicación | Journal of Algebra |
| Volumen | 547 |
| Estado | Publicada - 1 abr. 2020 |