Weak Hopf Algebras

Some articles on hopf algebras, algebra:

Hopf Algebras - Related Concepts
... Graded Hopf algebras are often used in algebraic topology they are the natural algebraic structure on the direct sum of all homology or cohomology groups of ... Locally compact quantum groups generalize Hopf algebras and carry a topology ... The algebra of all continuous functions on a Lie group is a locally compact quantum group ...

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