ILE Home Intuitionistic Logic Explorer < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  ILE Home  >  Th. List  >  weu Unicode version

Syntax Definition weu 2014
Description: Extend wff definition to include existential uniqueness ("there exists a unique  x such that  ph").
Hypotheses
Ref Expression
wph  wff  ph
vx  setvar  x
Assertion
Ref Expression
weu  wff  E! x ph

See definition df-eu 2017 for more information.

Colors of variables: wff set class
  Copyright terms: Public domain W3C validator