AP_THM_TAC

Tactic.AP_THM_TAC : tactic

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

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

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

See also

Thm.AP_TERM, Tactic.AP_TERM_TAC, Thm.AP_THM, Tactic.MK_COMB_TAC, Tactic.ABS_TAC, Drule.EXT