Proposition 2.8 Let H be a Hopf algebra and U a subHopfalgebra of H0 such that both H and U have bijective antipodes, and assume that U satisfies the RL-condition with respect to H. Let A be a U-comodule algebra, so that A is an H-module algebra as above.

 
  • 命題2.;8 H是一個(gè)Hopf代數,U是H~0的一個(gè)子Hopf代數使得H和U有雙射的對極,假定U關(guān)于H滿(mǎn)足RL-條件。 如上所述,A是一個(gè)U-余模代數,使得A是一個(gè)H-模代數。
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