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math.RA2006
Radford's formula for biFrobenius algebras and applications
Walter Ferrer Santos, Mariana Haim
In a biFrobenius algebra H, in particular in the case that H is a finite dimensional Hopf algebra, the antipode S can be decomposed as S= cf where c and f are the Frobenius and coF…
math.QA2006
Group-Like algebras and Hadamard matrices
Mariana Haim
We give a description in terms of square matrices of the family of group-like algebras with . In the case that and is not 2 and does not divide the…