EQF_INTRO : (thm -> thm)

SYNOPSIS
Converts negation to equality with F.

DESCRIBE
     A |- ~tm
   -------------  EQF_INTRO
    A |- tm = F

FAILURE
Fails if the argument theorem is not a negation.

SEEALSO  EQF_ELIM,   EQT_ELIM,   EQT_INTRO

HOL  Kananaskis 0