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We slightly improve on characterization results already in
the literature for base revision. We show that in order to axiomatically
characterize revision operators in a logic the only conditions this logic
is required to satisfy are: finitarity and monotonicity. A characterization
of limiting cases of revision operators, full meet and maxichoice, is also
offered. In the second part of the paper, as a particular case, we focus
on the class of graded fuzzy logics and distinguish two types of bases,
naturally arising in that context, exhibiting di?erent behavior.

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