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Theorem fmucndlem 22089
Description: Lemma for fmucnd 22090. (Contributed by Thierry Arnoux, 19-Nov-2017.)
Assertion
Ref Expression
fmucndlem ((𝐹 Fn 𝑋𝐴𝑋) → ((𝑥𝑋, 𝑦𝑋 ↦ ⟨(𝐹𝑥), (𝐹𝑦)⟩) “ (𝐴 × 𝐴)) = ((𝐹𝐴) × (𝐹𝐴)))
Distinct variable groups:   𝑥,𝑦,𝐴   𝑥,𝐹,𝑦   𝑥,𝑋,𝑦

Proof of Theorem fmucndlem
Dummy variable 𝑝 is distinct from all other variables.
StepHypRef Expression
1 df-ima 5125 . . 3 ((𝑥𝑋, 𝑦𝑋 ↦ ⟨(𝐹𝑥), (𝐹𝑦)⟩) “ (𝐴 × 𝐴)) = ran ((𝑥𝑋, 𝑦𝑋 ↦ ⟨(𝐹𝑥), (𝐹𝑦)⟩) ↾ (𝐴 × 𝐴))
2 simpr 477 . . . . 5 ((𝐹 Fn 𝑋𝐴𝑋) → 𝐴𝑋)
3 resmpt2 6755 . . . . 5 ((𝐴𝑋𝐴𝑋) → ((𝑥𝑋, 𝑦𝑋 ↦ ⟨(𝐹𝑥), (𝐹𝑦)⟩) ↾ (𝐴 × 𝐴)) = (𝑥𝐴, 𝑦𝐴 ↦ ⟨(𝐹𝑥), (𝐹𝑦)⟩))
42, 3sylancom 701 . . . 4 ((𝐹 Fn 𝑋𝐴𝑋) → ((𝑥𝑋, 𝑦𝑋 ↦ ⟨(𝐹𝑥), (𝐹𝑦)⟩) ↾ (𝐴 × 𝐴)) = (𝑥𝐴, 𝑦𝐴 ↦ ⟨(𝐹𝑥), (𝐹𝑦)⟩))
54rneqd 5351 . . 3 ((𝐹 Fn 𝑋𝐴𝑋) → ran ((𝑥𝑋, 𝑦𝑋 ↦ ⟨(𝐹𝑥), (𝐹𝑦)⟩) ↾ (𝐴 × 𝐴)) = ran (𝑥𝐴, 𝑦𝐴 ↦ ⟨(𝐹𝑥), (𝐹𝑦)⟩))
61, 5syl5eq 2667 . 2 ((𝐹 Fn 𝑋𝐴𝑋) → ((𝑥𝑋, 𝑦𝑋 ↦ ⟨(𝐹𝑥), (𝐹𝑦)⟩) “ (𝐴 × 𝐴)) = ran (𝑥𝐴, 𝑦𝐴 ↦ ⟨(𝐹𝑥), (𝐹𝑦)⟩))
7 vex 3201 . . . . . . . . . . . . 13 𝑥 ∈ V
8 vex 3201 . . . . . . . . . . . . 13 𝑦 ∈ V
97, 8op1std 7175 . . . . . . . . . . . 12 (𝑝 = ⟨𝑥, 𝑦⟩ → (1st𝑝) = 𝑥)
109fveq2d 6193 . . . . . . . . . . 11 (𝑝 = ⟨𝑥, 𝑦⟩ → (𝐹‘(1st𝑝)) = (𝐹𝑥))
117, 8op2ndd 7176 . . . . . . . . . . . 12 (𝑝 = ⟨𝑥, 𝑦⟩ → (2nd𝑝) = 𝑦)
1211fveq2d 6193 . . . . . . . . . . 11 (𝑝 = ⟨𝑥, 𝑦⟩ → (𝐹‘(2nd𝑝)) = (𝐹𝑦))
1310, 12opeq12d 4408 . . . . . . . . . 10 (𝑝 = ⟨𝑥, 𝑦⟩ → ⟨(𝐹‘(1st𝑝)), (𝐹‘(2nd𝑝))⟩ = ⟨(𝐹𝑥), (𝐹𝑦)⟩)
1413mpt2mpt 6749 . . . . . . . . 9 (𝑝 ∈ (𝐴 × 𝐴) ↦ ⟨(𝐹‘(1st𝑝)), (𝐹‘(2nd𝑝))⟩) = (𝑥𝐴, 𝑦𝐴 ↦ ⟨(𝐹𝑥), (𝐹𝑦)⟩)
1514eqcomi 2630 . . . . . . . 8 (𝑥𝐴, 𝑦𝐴 ↦ ⟨(𝐹𝑥), (𝐹𝑦)⟩) = (𝑝 ∈ (𝐴 × 𝐴) ↦ ⟨(𝐹‘(1st𝑝)), (𝐹‘(2nd𝑝))⟩)
1615rneqi 5350 . . . . . . 7 ran (𝑥𝐴, 𝑦𝐴 ↦ ⟨(𝐹𝑥), (𝐹𝑦)⟩) = ran (𝑝 ∈ (𝐴 × 𝐴) ↦ ⟨(𝐹‘(1st𝑝)), (𝐹‘(2nd𝑝))⟩)
17 fvexd 6201 . . . . . . 7 ((⊤ ∧ 𝑝 ∈ (𝐴 × 𝐴)) → (𝐹‘(1st𝑝)) ∈ V)
18 fvexd 6201 . . . . . . 7 ((⊤ ∧ 𝑝 ∈ (𝐴 × 𝐴)) → (𝐹‘(2nd𝑝)) ∈ V)
1916, 17, 18fliftrel 6555 . . . . . 6 (⊤ → ran (𝑥𝐴, 𝑦𝐴 ↦ ⟨(𝐹𝑥), (𝐹𝑦)⟩) ⊆ (V × V))
2019trud 1492 . . . . 5 ran (𝑥𝐴, 𝑦𝐴 ↦ ⟨(𝐹𝑥), (𝐹𝑦)⟩) ⊆ (V × V)
2120sseli 3597 . . . 4 (𝑝 ∈ ran (𝑥𝐴, 𝑦𝐴 ↦ ⟨(𝐹𝑥), (𝐹𝑦)⟩) → 𝑝 ∈ (V × V))
2221adantl 482 . . 3 (((𝐹 Fn 𝑋𝐴𝑋) ∧ 𝑝 ∈ ran (𝑥𝐴, 𝑦𝐴 ↦ ⟨(𝐹𝑥), (𝐹𝑦)⟩)) → 𝑝 ∈ (V × V))
23 xpss 5224 . . . . 5 ((𝐹𝐴) × (𝐹𝐴)) ⊆ (V × V)
2423sseli 3597 . . . 4 (𝑝 ∈ ((𝐹𝐴) × (𝐹𝐴)) → 𝑝 ∈ (V × V))
2524adantl 482 . . 3 (((𝐹 Fn 𝑋𝐴𝑋) ∧ 𝑝 ∈ ((𝐹𝐴) × (𝐹𝐴))) → 𝑝 ∈ (V × V))
26 fvelimab 6251 . . . . . . . 8 ((𝐹 Fn 𝑋𝐴𝑋) → ((1st𝑝) ∈ (𝐹𝐴) ↔ ∃𝑥𝐴 (𝐹𝑥) = (1st𝑝)))
27 fvelimab 6251 . . . . . . . 8 ((𝐹 Fn 𝑋𝐴𝑋) → ((2nd𝑝) ∈ (𝐹𝐴) ↔ ∃𝑦𝐴 (𝐹𝑦) = (2nd𝑝)))
2826, 27anbi12d 747 . . . . . . 7 ((𝐹 Fn 𝑋𝐴𝑋) → (((1st𝑝) ∈ (𝐹𝐴) ∧ (2nd𝑝) ∈ (𝐹𝐴)) ↔ (∃𝑥𝐴 (𝐹𝑥) = (1st𝑝) ∧ ∃𝑦𝐴 (𝐹𝑦) = (2nd𝑝))))
29 eqid 2621 . . . . . . . . 9 (𝑥𝐴, 𝑦𝐴 ↦ ⟨(𝐹𝑥), (𝐹𝑦)⟩) = (𝑥𝐴, 𝑦𝐴 ↦ ⟨(𝐹𝑥), (𝐹𝑦)⟩)
30 opex 4930 . . . . . . . . 9 ⟨(𝐹𝑥), (𝐹𝑦)⟩ ∈ V
3129, 30elrnmpt2 6770 . . . . . . . 8 (⟨(1st𝑝), (2nd𝑝)⟩ ∈ ran (𝑥𝐴, 𝑦𝐴 ↦ ⟨(𝐹𝑥), (𝐹𝑦)⟩) ↔ ∃𝑥𝐴𝑦𝐴 ⟨(1st𝑝), (2nd𝑝)⟩ = ⟨(𝐹𝑥), (𝐹𝑦)⟩)
32 eqcom 2628 . . . . . . . . . 10 (⟨(1st𝑝), (2nd𝑝)⟩ = ⟨(𝐹𝑥), (𝐹𝑦)⟩ ↔ ⟨(𝐹𝑥), (𝐹𝑦)⟩ = ⟨(1st𝑝), (2nd𝑝)⟩)
33 fvex 6199 . . . . . . . . . . 11 (1st𝑝) ∈ V
34 fvex 6199 . . . . . . . . . . 11 (2nd𝑝) ∈ V
3533, 34opth2 4947 . . . . . . . . . 10 (⟨(𝐹𝑥), (𝐹𝑦)⟩ = ⟨(1st𝑝), (2nd𝑝)⟩ ↔ ((𝐹𝑥) = (1st𝑝) ∧ (𝐹𝑦) = (2nd𝑝)))
3632, 35bitri 264 . . . . . . . . 9 (⟨(1st𝑝), (2nd𝑝)⟩ = ⟨(𝐹𝑥), (𝐹𝑦)⟩ ↔ ((𝐹𝑥) = (1st𝑝) ∧ (𝐹𝑦) = (2nd𝑝)))
37362rexbii 3040 . . . . . . . 8 (∃𝑥𝐴𝑦𝐴 ⟨(1st𝑝), (2nd𝑝)⟩ = ⟨(𝐹𝑥), (𝐹𝑦)⟩ ↔ ∃𝑥𝐴𝑦𝐴 ((𝐹𝑥) = (1st𝑝) ∧ (𝐹𝑦) = (2nd𝑝)))
38 reeanv 3105 . . . . . . . 8 (∃𝑥𝐴𝑦𝐴 ((𝐹𝑥) = (1st𝑝) ∧ (𝐹𝑦) = (2nd𝑝)) ↔ (∃𝑥𝐴 (𝐹𝑥) = (1st𝑝) ∧ ∃𝑦𝐴 (𝐹𝑦) = (2nd𝑝)))
3931, 37, 383bitri 286 . . . . . . 7 (⟨(1st𝑝), (2nd𝑝)⟩ ∈ ran (𝑥𝐴, 𝑦𝐴 ↦ ⟨(𝐹𝑥), (𝐹𝑦)⟩) ↔ (∃𝑥𝐴 (𝐹𝑥) = (1st𝑝) ∧ ∃𝑦𝐴 (𝐹𝑦) = (2nd𝑝)))
4028, 39syl6rbbr 279 . . . . . 6 ((𝐹 Fn 𝑋𝐴𝑋) → (⟨(1st𝑝), (2nd𝑝)⟩ ∈ ran (𝑥𝐴, 𝑦𝐴 ↦ ⟨(𝐹𝑥), (𝐹𝑦)⟩) ↔ ((1st𝑝) ∈ (𝐹𝐴) ∧ (2nd𝑝) ∈ (𝐹𝐴))))
41 opelxp 5144 . . . . . 6 (⟨(1st𝑝), (2nd𝑝)⟩ ∈ ((𝐹𝐴) × (𝐹𝐴)) ↔ ((1st𝑝) ∈ (𝐹𝐴) ∧ (2nd𝑝) ∈ (𝐹𝐴)))
4240, 41syl6bbr 278 . . . . 5 ((𝐹 Fn 𝑋𝐴𝑋) → (⟨(1st𝑝), (2nd𝑝)⟩ ∈ ran (𝑥𝐴, 𝑦𝐴 ↦ ⟨(𝐹𝑥), (𝐹𝑦)⟩) ↔ ⟨(1st𝑝), (2nd𝑝)⟩ ∈ ((𝐹𝐴) × (𝐹𝐴))))
4342adantr 481 . . . 4 (((𝐹 Fn 𝑋𝐴𝑋) ∧ 𝑝 ∈ (V × V)) → (⟨(1st𝑝), (2nd𝑝)⟩ ∈ ran (𝑥𝐴, 𝑦𝐴 ↦ ⟨(𝐹𝑥), (𝐹𝑦)⟩) ↔ ⟨(1st𝑝), (2nd𝑝)⟩ ∈ ((𝐹𝐴) × (𝐹𝐴))))
44 1st2nd2 7202 . . . . . 6 (𝑝 ∈ (V × V) → 𝑝 = ⟨(1st𝑝), (2nd𝑝)⟩)
4544adantl 482 . . . . 5 (((𝐹 Fn 𝑋𝐴𝑋) ∧ 𝑝 ∈ (V × V)) → 𝑝 = ⟨(1st𝑝), (2nd𝑝)⟩)
4645eleq1d 2685 . . . 4 (((𝐹 Fn 𝑋𝐴𝑋) ∧ 𝑝 ∈ (V × V)) → (𝑝 ∈ ran (𝑥𝐴, 𝑦𝐴 ↦ ⟨(𝐹𝑥), (𝐹𝑦)⟩) ↔ ⟨(1st𝑝), (2nd𝑝)⟩ ∈ ran (𝑥𝐴, 𝑦𝐴 ↦ ⟨(𝐹𝑥), (𝐹𝑦)⟩)))
4745eleq1d 2685 . . . 4 (((𝐹 Fn 𝑋𝐴𝑋) ∧ 𝑝 ∈ (V × V)) → (𝑝 ∈ ((𝐹𝐴) × (𝐹𝐴)) ↔ ⟨(1st𝑝), (2nd𝑝)⟩ ∈ ((𝐹𝐴) × (𝐹𝐴))))
4843, 46, 473bitr4d 300 . . 3 (((𝐹 Fn 𝑋𝐴𝑋) ∧ 𝑝 ∈ (V × V)) → (𝑝 ∈ ran (𝑥𝐴, 𝑦𝐴 ↦ ⟨(𝐹𝑥), (𝐹𝑦)⟩) ↔ 𝑝 ∈ ((𝐹𝐴) × (𝐹𝐴))))
4922, 25, 48eqrdav 2620 . 2 ((𝐹 Fn 𝑋𝐴𝑋) → ran (𝑥𝐴, 𝑦𝐴 ↦ ⟨(𝐹𝑥), (𝐹𝑦)⟩) = ((𝐹𝐴) × (𝐹𝐴)))
506, 49eqtrd 2655 1 ((𝐹 Fn 𝑋𝐴𝑋) → ((𝑥𝑋, 𝑦𝑋 ↦ ⟨(𝐹𝑥), (𝐹𝑦)⟩) “ (𝐴 × 𝐴)) = ((𝐹𝐴) × (𝐹𝐴)))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wb 196  wa 384   = wceq 1482  wtru 1483  wcel 1989  wrex 2912  Vcvv 3198  wss 3572  cop 4181  cmpt 4727   × cxp 5110  ran crn 5113  cres 5114  cima 5115   Fn wfn 5881  cfv 5886  cmpt2 6649  1st c1st 7163  2nd c2nd 7164
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1721  ax-4 1736  ax-5 1838  ax-6 1887  ax-7 1934  ax-8 1991  ax-9 1998  ax-10 2018  ax-11 2033  ax-12 2046  ax-13 2245  ax-ext 2601  ax-sep 4779  ax-nul 4787  ax-pow 4841  ax-pr 4904  ax-un 6946
This theorem depends on definitions:  df-bi 197  df-or 385  df-an 386  df-3an 1039  df-tru 1485  df-ex 1704  df-nf 1709  df-sb 1880  df-eu 2473  df-mo 2474  df-clab 2608  df-cleq 2614  df-clel 2617  df-nfc 2752  df-ne 2794  df-ral 2916  df-rex 2917  df-rab 2920  df-v 3200  df-sbc 3434  df-csb 3532  df-dif 3575  df-un 3577  df-in 3579  df-ss 3586  df-nul 3914  df-if 4085  df-sn 4176  df-pr 4178  df-op 4182  df-uni 4435  df-iun 4520  df-br 4652  df-opab 4711  df-mpt 4728  df-id 5022  df-xp 5118  df-rel 5119  df-cnv 5120  df-co 5121  df-dm 5122  df-rn 5123  df-res 5124  df-ima 5125  df-iota 5849  df-fun 5888  df-fn 5889  df-f 5890  df-fv 5894  df-oprab 6651  df-mpt2 6652  df-1st 7165  df-2nd 7166
This theorem is referenced by:  fmucnd  22090
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