Theorem oveq2 101

Description: Equality theorem for binary operation. (Contributed by Mario Carneiro, 7-Oct-2014.)

Hypotheses

Ref	Expression
oveq.1	⊢ F:(α → (β → γ))
oveq.2	⊢ A:α
oveq.3	⊢ B:β
oveq2.4	⊢ R⊧[B = T]

Assertion

Ref	Expression
oveq2	⊢ R⊧[[AFB] = [AFT]]

Proof of Theorem oveq2

Step	Hyp	Ref	Expression
1		oveq.1	. 2 ⊢ F:(α → (β → γ))
2		oveq.2	. 2 ⊢ A:α
3		oveq.3	. 2 ⊢ B:β
4		oveq2.4	. . . 4 ⊢ R⊧[B = T]
5	4	ax-cb1 29	. . 3 ⊢ R:∗
6	5, 2	eqid 83	. 2 ⊢ R⊧[A = A]
7	1, 2, 3, 6, 4	oveq12 100	1 ⊢ R⊧[[AFB] = [AFT]]

Syntax hints:   → ht 2   = ke 7  [kbr 9  ⊧wffMMJ2 11  wffMMJ2t 12

This theorem was proved from axioms:  ax-syl 15  ax-jca 17  ax-trud 26  ax-cb1 29  ax-cb2 30  ax-weq 40  ax-refl 42  ax-eqmp 45  ax-wc 49  ax-ceq 51  ax-wov 71  ax-eqtypi 77  ax-eqtypri 80

This theorem depends on definitions:  df-ov 73

This theorem is referenced by:  imval  146  orval  147  anval  148  ecase  163  exlimdv2  166  exlimd  183  axpow  221  axun  222