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math.QA2002
Hopf algebras of dimension 14
M. Beattie, S. Dăscălescu
Let H be a finite dimensional non-semisimple Hopf algebra over an algebraically closed field k of characteristic 0. If H has no nontrivial skew-primitive elements, we find some bou…
math.QA2001
Co-Frobenius Hopf algebras and the coradical filtration
Nicolas Andruskiewitsch, Sorin Dascalescu
We prove that a Hopf algebra with a finite coradical filtration is co-Frobenius, i. e. there is a non-zero integral on it. As a consequence, we show that algebras of functions on q…