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Syntax Definition wrmo 2303
Description: Extend wff notation to include restricted "at most one."
Hypotheses
Ref Expression
wph wff φ
vx setvar x
cA class A
Assertion
Ref Expression
wrmo wff ∃*x ∈ A φ
See definition df-rmo 2308 for more information.
Colors of variables: wff set class
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