2 papers
math.QA1999
Quasi-triangular structures on Hopf algebras with positive bases
J. H. Lu, M. Yan, Y. C. Zhu
A basis B of a finite dimensional Hopf algebra H is said to be positive if all the structure constants of H relative to B are non-negative. A quasi-triangular structure $R\in H\oti…
math.QA1999
On Hopf algebras with positive bases
J. H. Lu, M. Yan, Y. C. Zhu
We show that if a finite dimensional Hopf algebra over has a basis such that all the structure constants are non-negative, then the Hopf algebra must be given by a finite…