Let $A$ be an algebra and $B$ a bialgebra. What is the meaning of "covariantly" in "B is covariantly acting on A"? Thank you very much.
Edit: it is on line 13 of the abstract of the file (page 3).
2026-03-29 03:35:28.1774755328
What is the meaning of "B is a bialgebra covariantly acting on A"?
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