Metamath Proof Explorer


Syntax definition wl-rmo

Description: Redefine the restricted "at most one" quantifier context to avoid overloading and syntax check errors in mmj2. This operator is to be distinguished from E* x e. A ph with a similiar semantics, but using x as a formal parameter rather than assuming true elementhood.

Ref Expression
Assertion wl-rmo wff * x : A φ