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 Description: Transfer a relation subset law to the function relation. (Contributed by Mario Carneiro, 28-Jul-2014.)
Hypotheses
Ref Expression
caofref.1 (𝜑𝐴𝑉)
caofref.2 (𝜑𝐹:𝐴𝑆)
caofcom.3 (𝜑𝐺:𝐴𝑆)
caofrss.4 ((𝜑 ∧ (𝑥𝑆𝑦𝑆)) → (𝑥𝑅𝑦𝑥𝑇𝑦))
Assertion
Ref Expression
caofrss (𝜑 → (𝐹𝑟 𝑅𝐺𝐹𝑟 𝑇𝐺))
Distinct variable groups:   𝑥,𝑦,𝐹   𝑥,𝐺,𝑦   𝜑,𝑥,𝑦   𝑥,𝑅,𝑦   𝑥,𝑆,𝑦   𝑥,𝑇,𝑦
Allowed substitution hints:   𝐴(𝑥,𝑦)   𝑉(𝑥,𝑦)

Proof of Theorem caofrss
Dummy variable 𝑤 is distinct from all other variables.
StepHypRef Expression
1 caofref.2 . . . . 5 (𝜑𝐹:𝐴𝑆)
21ffvelrnda 6267 . . . 4 ((𝜑𝑤𝐴) → (𝐹𝑤) ∈ 𝑆)
3 caofcom.3 . . . . 5 (𝜑𝐺:𝐴𝑆)
43ffvelrnda 6267 . . . 4 ((𝜑𝑤𝐴) → (𝐺𝑤) ∈ 𝑆)
5 caofrss.4 . . . . . 6 ((𝜑 ∧ (𝑥𝑆𝑦𝑆)) → (𝑥𝑅𝑦𝑥𝑇𝑦))
65ralrimivva 2954 . . . . 5 (𝜑 → ∀𝑥𝑆𝑦𝑆 (𝑥𝑅𝑦𝑥𝑇𝑦))
76adantr 480 . . . 4 ((𝜑𝑤𝐴) → ∀𝑥𝑆𝑦𝑆 (𝑥𝑅𝑦𝑥𝑇𝑦))
8 breq1 4586 . . . . . 6 (𝑥 = (𝐹𝑤) → (𝑥𝑅𝑦 ↔ (𝐹𝑤)𝑅𝑦))
9 breq1 4586 . . . . . 6 (𝑥 = (𝐹𝑤) → (𝑥𝑇𝑦 ↔ (𝐹𝑤)𝑇𝑦))
108, 9imbi12d 333 . . . . 5 (𝑥 = (𝐹𝑤) → ((𝑥𝑅𝑦𝑥𝑇𝑦) ↔ ((𝐹𝑤)𝑅𝑦 → (𝐹𝑤)𝑇𝑦)))
11 breq2 4587 . . . . . 6 (𝑦 = (𝐺𝑤) → ((𝐹𝑤)𝑅𝑦 ↔ (𝐹𝑤)𝑅(𝐺𝑤)))
12 breq2 4587 . . . . . 6 (𝑦 = (𝐺𝑤) → ((𝐹𝑤)𝑇𝑦 ↔ (𝐹𝑤)𝑇(𝐺𝑤)))
1311, 12imbi12d 333 . . . . 5 (𝑦 = (𝐺𝑤) → (((𝐹𝑤)𝑅𝑦 → (𝐹𝑤)𝑇𝑦) ↔ ((𝐹𝑤)𝑅(𝐺𝑤) → (𝐹𝑤)𝑇(𝐺𝑤))))
1410, 13rspc2va 3294 . . . 4 ((((𝐹𝑤) ∈ 𝑆 ∧ (𝐺𝑤) ∈ 𝑆) ∧ ∀𝑥𝑆𝑦𝑆 (𝑥𝑅𝑦𝑥𝑇𝑦)) → ((𝐹𝑤)𝑅(𝐺𝑤) → (𝐹𝑤)𝑇(𝐺𝑤)))
152, 4, 7, 14syl21anc 1317 . . 3 ((𝜑𝑤𝐴) → ((𝐹𝑤)𝑅(𝐺𝑤) → (𝐹𝑤)𝑇(𝐺𝑤)))
1615ralimdva 2945 . 2 (𝜑 → (∀𝑤𝐴 (𝐹𝑤)𝑅(𝐺𝑤) → ∀𝑤𝐴 (𝐹𝑤)𝑇(𝐺𝑤)))
17 ffn 5958 . . . 4 (𝐹:𝐴𝑆𝐹 Fn 𝐴)
181, 17syl 17 . . 3 (𝜑𝐹 Fn 𝐴)
19 ffn 5958 . . . 4 (𝐺:𝐴𝑆𝐺 Fn 𝐴)
203, 19syl 17 . . 3 (𝜑𝐺 Fn 𝐴)
21 caofref.1 . . 3 (𝜑𝐴𝑉)
22 inidm 3784 . . 3 (𝐴𝐴) = 𝐴
23 eqidd 2611 . . 3 ((𝜑𝑤𝐴) → (𝐹𝑤) = (𝐹𝑤))
24 eqidd 2611 . . 3 ((𝜑𝑤𝐴) → (𝐺𝑤) = (𝐺𝑤))
2518, 20, 21, 21, 22, 23, 24ofrfval 6803 . 2 (𝜑 → (𝐹𝑟 𝑅𝐺 ↔ ∀𝑤𝐴 (𝐹𝑤)𝑅(𝐺𝑤)))
2618, 20, 21, 21, 22, 23, 24ofrfval 6803 . 2 (𝜑 → (𝐹𝑟 𝑇𝐺 ↔ ∀𝑤𝐴 (𝐹𝑤)𝑇(𝐺𝑤)))
2716, 25, 263imtr4d 282 1 (𝜑 → (𝐹𝑟 𝑅𝐺𝐹𝑟 𝑇𝐺))
 Colors of variables: wff setvar class Syntax hints:   → wi 4   ∧ wa 383   = wceq 1475   ∈ wcel 1977  ∀wral 2896   class class class wbr 4583   Fn wfn 5799  ⟶wf 5800  ‘cfv 5804   ∘𝑟 cofr 6794 This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1713  ax-4 1728  ax-5 1827  ax-6 1875  ax-7 1922  ax-9 1986  ax-10 2006  ax-11 2021  ax-12 2034  ax-13 2234  ax-ext 2590  ax-rep 4699  ax-sep 4709  ax-nul 4717  ax-pr 4833 This theorem depends on definitions:  df-bi 196  df-or 384  df-an 385  df-3an 1033  df-tru 1478  df-ex 1696  df-nf 1701  df-sb 1868  df-eu 2462  df-mo 2463  df-clab 2597  df-cleq 2603  df-clel 2606  df-nfc 2740  df-ne 2782  df-ral 2901  df-rex 2902  df-reu 2903  df-rab 2905  df-v 3175  df-sbc 3403  df-csb 3500  df-dif 3543  df-un 3545  df-in 3547  df-ss 3554  df-nul 3875  df-if 4037  df-sn 4126  df-pr 4128  df-op 4132  df-uni 4373  df-iun 4457  df-br 4584  df-opab 4644  df-mpt 4645  df-id 4953  df-xp 5044  df-rel 5045  df-cnv 5046  df-co 5047  df-dm 5048  df-rn 5049  df-res 5050  df-ima 5051  df-iota 5768  df-fun 5806  df-fn 5807  df-f 5808  df-f1 5809  df-fo 5810  df-f1o 5811  df-fv 5812  df-ofr 6796 This theorem is referenced by: (None)
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