Universal quantum (semi)groups and Hopf envelopes: Erratum
Abstract
In F there is a statement generalizing the results in FG. Unfortunately there is a mistake in a computation that affects the main result. I don't know if the main result in F is true or not, but I propose an alternative statement (Theorem 3.7) that was actually the main motivation in FG. This statement answers in an affirmative way the question whether the localization of the FRT construction with respect to a quantum determinant is a Hopf algebra, in case the Nichols algebra associated to the braiding is finite dimensional.
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