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# Graded Hopf algebras

`sage.categories.graded_hopf_algebras.``GradedHopfAlgebras`(base_ring)

  The category of graded Hopf algebras.

  EXAMPLES:

      sage: C = GradedHopfAlgebras(QQ); C
      Join of Category of hopf algebras over Rational Field
          and Category of graded algebras over Rational Field
      sage: C is HopfAlgebras(QQ).Graded()
      True

  TESTS:

      sage: TestSuite(C).run()

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