AP_THM_TAC : tactic

SYNOPSIS

Strips identical operands from functions on both sides of an equation.

DESCRIPTION

When applied to a goal of the form A ?- f x = g x, the tactic AP_THM_TAC strips away the operands of the function application:

    A ?- f x = g x
   ================  AP_THM_TAC
      A ?- f = g

FAILURE CONDITIONS

Fails unless the goal has the above form, namely an equation both sides of which consist of function applications to the same argument.