4. Axiomatics of fuzzy subsets Let's look at the axiomatics corresponding to the valuation of a fuzzy subset (it's best not to use the words fuzzy measure ). v (∅) = 0 , v (E ) = 1 ∀A˜, B˜⊂E : (A˜⊂B˜)⇒(ν(A˜)≤ν(