existential instantiation

/EH0 G Z IH0 S T EH1 N CH AH0 L IH0 N S T AE0 N SH IY0 EY0 SH AH0 N/
noun
  1. 1

    (logic) In predicate logic, an inference rule of the form ∃x P(x) ⊢ P(c), where c is a new symbol (not part of the original domain of discourse, but which can stand for an element of it (as in Skolemization)).

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