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Theorem riotasvd 34560
 Description: Deduction version of riotasv 34563. (Contributed by NM, 4-Mar-2013.) (Revised by Mario Carneiro, 15-Oct-2016.)
Hypotheses
Ref Expression
riotasvd.1 (𝜑𝐷 = (𝑥𝐴𝑦𝐵 (𝜓𝑥 = 𝐶)))
riotasvd.2 (𝜑𝐷𝐴)
Assertion
Ref Expression
riotasvd ((𝜑𝐴𝑉) → ((𝑦𝐵𝜓) → 𝐷 = 𝐶))
Distinct variable groups:   𝑥,𝑦,𝐴   𝑥,𝐵   𝑥,𝐶   𝜓,𝑥
Allowed substitution hints:   𝜑(𝑥,𝑦)   𝜓(𝑦)   𝐵(𝑦)   𝐶(𝑦)   𝐷(𝑥,𝑦)   𝑉(𝑥,𝑦)

Proof of Theorem riotasvd
Dummy variable 𝑧 is distinct from all other variables.
StepHypRef Expression
1 riotasvd.1 . . . . . . . . 9 (𝜑𝐷 = (𝑥𝐴𝑦𝐵 (𝜓𝑥 = 𝐶)))
21adantr 480 . . . . . . . 8 ((𝜑𝐴𝑉) → 𝐷 = (𝑥𝐴𝑦𝐵 (𝜓𝑥 = 𝐶)))
3 riotasvd.2 . . . . . . . . 9 (𝜑𝐷𝐴)
43adantr 480 . . . . . . . 8 ((𝜑𝐴𝑉) → 𝐷𝐴)
52, 4eqeltrrd 2731 . . . . . . 7 ((𝜑𝐴𝑉) → (𝑥𝐴𝑦𝐵 (𝜓𝑥 = 𝐶)) ∈ 𝐴)
6 riotaclbgBAD 34558 . . . . . . . 8 (𝐴𝑉 → (∃!𝑥𝐴𝑦𝐵 (𝜓𝑥 = 𝐶) ↔ (𝑥𝐴𝑦𝐵 (𝜓𝑥 = 𝐶)) ∈ 𝐴))
76adantl 481 . . . . . . 7 ((𝜑𝐴𝑉) → (∃!𝑥𝐴𝑦𝐵 (𝜓𝑥 = 𝐶) ↔ (𝑥𝐴𝑦𝐵 (𝜓𝑥 = 𝐶)) ∈ 𝐴))
85, 7mpbird 247 . . . . . 6 ((𝜑𝐴𝑉) → ∃!𝑥𝐴𝑦𝐵 (𝜓𝑥 = 𝐶))
9 riotasbc 6666 . . . . . 6 (∃!𝑥𝐴𝑦𝐵 (𝜓𝑥 = 𝐶) → [(𝑥𝐴𝑦𝐵 (𝜓𝑥 = 𝐶)) / 𝑥]𝑦𝐵 (𝜓𝑥 = 𝐶))
108, 9syl 17 . . . . 5 ((𝜑𝐴𝑉) → [(𝑥𝐴𝑦𝐵 (𝜓𝑥 = 𝐶)) / 𝑥]𝑦𝐵 (𝜓𝑥 = 𝐶))
11 eqeq1 2655 . . . . . . . . 9 (𝑥 = 𝑧 → (𝑥 = 𝐶𝑧 = 𝐶))
1211imbi2d 329 . . . . . . . 8 (𝑥 = 𝑧 → ((𝜓𝑥 = 𝐶) ↔ (𝜓𝑧 = 𝐶)))
1312ralbidv 3015 . . . . . . 7 (𝑥 = 𝑧 → (∀𝑦𝐵 (𝜓𝑥 = 𝐶) ↔ ∀𝑦𝐵 (𝜓𝑧 = 𝐶)))
14 nfra1 2970 . . . . . . . . . 10 𝑦𝑦𝐵 (𝜓𝑥 = 𝐶)
15 nfcv 2793 . . . . . . . . . 10 𝑦𝐴
1614, 15nfriota 6660 . . . . . . . . 9 𝑦(𝑥𝐴𝑦𝐵 (𝜓𝑥 = 𝐶))
1716nfeq2 2809 . . . . . . . 8 𝑦 𝑧 = (𝑥𝐴𝑦𝐵 (𝜓𝑥 = 𝐶))
18 eqeq1 2655 . . . . . . . . 9 (𝑧 = (𝑥𝐴𝑦𝐵 (𝜓𝑥 = 𝐶)) → (𝑧 = 𝐶 ↔ (𝑥𝐴𝑦𝐵 (𝜓𝑥 = 𝐶)) = 𝐶))
1918imbi2d 329 . . . . . . . 8 (𝑧 = (𝑥𝐴𝑦𝐵 (𝜓𝑥 = 𝐶)) → ((𝜓𝑧 = 𝐶) ↔ (𝜓 → (𝑥𝐴𝑦𝐵 (𝜓𝑥 = 𝐶)) = 𝐶)))
2017, 19ralbid 3012 . . . . . . 7 (𝑧 = (𝑥𝐴𝑦𝐵 (𝜓𝑥 = 𝐶)) → (∀𝑦𝐵 (𝜓𝑧 = 𝐶) ↔ ∀𝑦𝐵 (𝜓 → (𝑥𝐴𝑦𝐵 (𝜓𝑥 = 𝐶)) = 𝐶)))
2113, 20sbcie2g 3502 . . . . . 6 ((𝑥𝐴𝑦𝐵 (𝜓𝑥 = 𝐶)) ∈ 𝐴 → ([(𝑥𝐴𝑦𝐵 (𝜓𝑥 = 𝐶)) / 𝑥]𝑦𝐵 (𝜓𝑥 = 𝐶) ↔ ∀𝑦𝐵 (𝜓 → (𝑥𝐴𝑦𝐵 (𝜓𝑥 = 𝐶)) = 𝐶)))
225, 21syl 17 . . . . 5 ((𝜑𝐴𝑉) → ([(𝑥𝐴𝑦𝐵 (𝜓𝑥 = 𝐶)) / 𝑥]𝑦𝐵 (𝜓𝑥 = 𝐶) ↔ ∀𝑦𝐵 (𝜓 → (𝑥𝐴𝑦𝐵 (𝜓𝑥 = 𝐶)) = 𝐶)))
2310, 22mpbid 222 . . . 4 ((𝜑𝐴𝑉) → ∀𝑦𝐵 (𝜓 → (𝑥𝐴𝑦𝐵 (𝜓𝑥 = 𝐶)) = 𝐶))
24 rsp 2958 . . . 4 (∀𝑦𝐵 (𝜓 → (𝑥𝐴𝑦𝐵 (𝜓𝑥 = 𝐶)) = 𝐶) → (𝑦𝐵 → (𝜓 → (𝑥𝐴𝑦𝐵 (𝜓𝑥 = 𝐶)) = 𝐶)))
2523, 24syl 17 . . 3 ((𝜑𝐴𝑉) → (𝑦𝐵 → (𝜓 → (𝑥𝐴𝑦𝐵 (𝜓𝑥 = 𝐶)) = 𝐶)))
2625impd 446 . 2 ((𝜑𝐴𝑉) → ((𝑦𝐵𝜓) → (𝑥𝐴𝑦𝐵 (𝜓𝑥 = 𝐶)) = 𝐶))
272eqeq1d 2653 . 2 ((𝜑𝐴𝑉) → (𝐷 = 𝐶 ↔ (𝑥𝐴𝑦𝐵 (𝜓𝑥 = 𝐶)) = 𝐶))
2826, 27sylibrd 249 1 ((𝜑𝐴𝑉) → ((𝑦𝐵𝜓) → 𝐷 = 𝐶))
 Colors of variables: wff setvar class Syntax hints:   → wi 4   ↔ wb 196   ∧ wa 383   = wceq 1523   ∈ wcel 2030  ∀wral 2941  ∃!wreu 2943  [wsbc 3468  ℩crio 6650 This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1762  ax-4 1777  ax-5 1879  ax-6 1945  ax-7 1981  ax-8 2032  ax-9 2039  ax-10 2059  ax-11 2074  ax-12 2087  ax-13 2282  ax-ext 2631  ax-sep 4814  ax-nul 4822  ax-pow 4873  ax-pr 4936  ax-un 6991  ax-riotaBAD 34557 This theorem depends on definitions:  df-bi 197  df-or 384  df-an 385  df-3an 1056  df-tru 1526  df-ex 1745  df-nf 1750  df-sb 1938  df-eu 2502  df-mo 2503  df-clab 2638  df-cleq 2644  df-clel 2647  df-nfc 2782  df-nel 2927  df-ral 2946  df-rex 2947  df-reu 2948  df-rab 2950  df-v 3233  df-sbc 3469  df-dif 3610  df-un 3612  df-in 3614  df-ss 3621  df-nul 3949  df-if 4120  df-pw 4193  df-sn 4211  df-pr 4213  df-op 4217  df-uni 4469  df-br 4686  df-opab 4746  df-mpt 4763  df-id 5053  df-xp 5149  df-rel 5150  df-cnv 5151  df-co 5152  df-dm 5153  df-iota 5889  df-fun 5928  df-fv 5934  df-riota 6651  df-undef 7444 This theorem is referenced by:  riotasv2d  34561  riotasv  34563  riotasv3d  34564  cdleme32a  36046
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