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Syntax Definition wdisj 3736
Description: Extend wff notation to include the statement that a family of classes B(x), for x A, is a disjoint family.
Ref Expression
vx setvar x
cA class A
cB class B
Ref Expression
wdisj wff Disj x A B

See definition df-disj 3737 for more information.

Colors of variables: wff set class
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