Theorem elovimad 7455

Description: Elementhood of the image set of an operation value. (Contributed by Thierry Arnoux, 13-Mar-2017.)

Hypotheses

Ref	Expression
elovimad.1	⊢ (𝜑 → 𝐴 ∈ 𝐶)
elovimad.2	⊢ (𝜑 → 𝐵 ∈ 𝐷)
elovimad.3	⊢ (𝜑 → Fun 𝐹)
elovimad.4	⊢ (𝜑 → (𝐶 × 𝐷) ⊆ dom 𝐹)

Assertion

Ref	Expression
elovimad	⊢ (𝜑 → (𝐴𝐹𝐵) ∈ (𝐹 “ (𝐶 × 𝐷)))

Proof of Theorem elovimad

Step	Hyp	Ref	Expression
1		df-ov 7408	. 2 ⊢ (𝐴𝐹𝐵) = (𝐹‘⟨𝐴, 𝐵⟩)
2		elovimad.1	. . . 4 ⊢ (𝜑 → 𝐴 ∈ 𝐶)
3		elovimad.2	. . . 4 ⊢ (𝜑 → 𝐵 ∈ 𝐷)
4	2, 3	opelxpd 5693	. . 3 ⊢ (𝜑 → ⟨𝐴, 𝐵⟩ ∈ (𝐶 × 𝐷))
5		elovimad.3	. . . 4 ⊢ (𝜑 → Fun 𝐹)
6		elovimad.4	. . . . 5 ⊢ (𝜑 → (𝐶 × 𝐷) ⊆ dom 𝐹)
7	6, 4	sseldd 3959	. . . 4 ⊢ (𝜑 → ⟨𝐴, 𝐵⟩ ∈ dom 𝐹)
8		funfvima 7222	. . . 4 ⊢ ((Fun 𝐹 ∧ ⟨𝐴, 𝐵⟩ ∈ dom 𝐹) → (⟨𝐴, 𝐵⟩ ∈ (𝐶 × 𝐷) → (𝐹‘⟨𝐴, 𝐵⟩) ∈ (𝐹 “ (𝐶 × 𝐷))))
9	5, 7, 8	syl2anc 584	. . 3 ⊢ (𝜑 → (⟨𝐴, 𝐵⟩ ∈ (𝐶 × 𝐷) → (𝐹‘⟨𝐴, 𝐵⟩) ∈ (𝐹 “ (𝐶 × 𝐷))))
10	4, 9	mpd 15	. 2 ⊢ (𝜑 → (𝐹‘⟨𝐴, 𝐵⟩) ∈ (𝐹 “ (𝐶 × 𝐷)))
11	1, 10	eqeltrid 2838	1 ⊢ (𝜑 → (𝐴𝐹𝐵) ∈ (𝐹 “ (𝐶 × 𝐷)))

Syntax hints:   → wi 4   ∈ wcel 2108   ⊆ wss 3926  ⟨cop 4607   × cxp 5652  dom cdm 5654   “ cima 5657  Fun wfun 6525  ‘cfv 6531  (class class class)co 7405

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1795  ax-4 1809  ax-5 1910  ax-6 1967  ax-7 2007  ax-8 2110  ax-9 2118  ax-10 2141  ax-12 2177  ax-ext 2707  ax-sep 5266  ax-nul 5276  ax-pr 5402

This theorem depends on definitions:  df-bi 207  df-an 396  df-or 848  df-3an 1088  df-tru 1543  df-fal 1553  df-ex 1780  df-nf 1784  df-sb 2065  df-mo 2539  df-eu 2568  df-clab 2714  df-cleq 2727  df-clel 2809  df-ne 2933  df-ral 3052  df-rex 3061  df-rab 3416  df-v 3461  df-dif 3929  df-un 3931  df-in 3933  df-ss 3943  df-nul 4309  df-if 4501  df-sn 4602  df-pr 4604  df-op 4608  df-uni 4884  df-br 5120  df-opab 5182  df-id 5548  df-xp 5660  df-rel 5661  df-cnv 5662  df-co 5663  df-dm 5664  df-rn 5665  df-res 5666  df-ima 5667  df-iota 6484  df-fun 6533  df-fn 6534  df-fv 6539  df-ov 7408

This theorem is referenced by:  psdmul  22104  ltgov  28576  xrofsup  32744  icoreelrn  37379