Hopf Algebras
Mostrando 13-13 de 13 artigos, teses e dissertações.
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13. Bialgebra cohomology, deformations, and quantum groups.
We introduce cohomology and deformation theories for a bialgebra A (over a commutative unital ring k) such that the second cohomology group is the space of infinitesimal deformations. Our theory gives a natural identification between the underlying k-modules of the original and the deformed bialgebra. Certain explicit deformation formulas are given for the c