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Theorem caofref 7724
Description: Transfer a reflexive law to the function relation. (Contributed by Mario Carneiro, 28-Jul-2014.)
Hypotheses
Ref Expression
caofref.1 (𝜑 → 𝐴 ∈ 𝑉)
caofref.2 (𝜑 → 𝐹:𝐴⟶𝑆)
caofref.3 ((𝜑 ∧ 𝑥 ∈ 𝑆) → 𝑥𝑅𝑥)
Assertion
Ref Expression
caofref (𝜑 → 𝐹 ∘r 𝑅𝐹)
Distinct variable groups:   𝑥,𝐹   𝜑,𝑥   𝑥,𝑅   𝑥,𝑆
Allowed substitution hints:   𝐴(𝑥)   𝑉(𝑥)

Proof of Theorem caofref
Dummy variable 𝑤 is distinct from all other variables.
StepHypRef Expression
1 id 23 . . . . 5 (𝑥 = (𝐹‘𝑤) → 𝑥 = (𝐹‘𝑤))
21, 1breq12d 5116 . . . 4 (𝑥 = (𝐹‘𝑤) → (𝑥𝑅𝑥 ↔ (𝐹‘𝑤)𝑅(𝐹‘𝑤)))
3 caofref.3 . . . . . 6 ((𝜑 ∧ 𝑥 ∈ 𝑆) → 𝑥𝑅𝑥)
43ralrimiva 3155 . . . . 5 (𝜑 → ∀𝑥 ∈ 𝑆 𝑥𝑅𝑥)
54adantr 486 . . . 4 ((𝜑 ∧ 𝑤 ∈ 𝐴) → ∀𝑥 ∈ 𝑆 𝑥𝑅𝑥)
6 caofref.2 . . . . 5 (𝜑 → 𝐹:𝐴⟶𝑆)
76ffvelcdmda 7084 . . . 4 ((𝜑 ∧ 𝑤 ∈ 𝐴) → (𝐹‘𝑤) ∈ 𝑆)
82, 5, 7rspcdva 3578 . . 3 ((𝜑 ∧ 𝑤 ∈ 𝐴) → (𝐹‘𝑤)𝑅(𝐹‘𝑤))
98ralrimiva 3155 . 2 (𝜑 → ∀𝑤 ∈ 𝐴 (𝐹‘𝑤)𝑅(𝐹‘𝑤))
106ffnd 6710 . . 3 (𝜑 → 𝐹 Fn 𝐴)
11 caofref.1 . . 3 (𝜑 → 𝐴 ∈ 𝑉)
12 inidm 4172 . . 3 (𝐴 ∩ 𝐴) = 𝐴
13 eqidd 2762 . . 3 ((𝜑 ∧ 𝑤 ∈ 𝐴) → (𝐹‘𝑤) = (𝐹‘𝑤))
1410, 10, 11, 11, 12, 13, 13ofrfval 7703 . 2 (𝜑 → (𝐹 ∘r 𝑅𝐹 ↔ ∀𝑤 ∈ 𝐴 (𝐹‘𝑤)𝑅(𝐹‘𝑤)))
159, 14mpbird 260 1 (𝜑 → 𝐹 ∘r 𝑅𝐹)
Colors of variables:    wff setvar class
This proof depends on syntax axioms:   → wi 4   ∧ wa 401   = wceq 1570   ∈ wcel 2145  ∀wral 3077   class class class wbr 5103  ⟶wf 6534  ‘cfv 6538   ∘r cofr 7692
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1828  ax-4 1842  ax-5 1943  ax-6 2000  ax-7 2041  ax-8 2147  ax-9 2155  ax-10 2178  ax-11 2194  ax-12 2213  ax-ext 2733  ax-rep 5232  ax-sep 5249  ax-nul 5260  ax-pr 5391
This proof depends on definitions:  df-bi 210  df-an 402  df-or 862  df-3an 1105  df-tru 1573  df-fal 1583  df-ex 1813  df-nf 1817  df-sb 2100  df-mo 2565  df-eu 2595  df-clab 2740  df-cleq 2753  df-clel 2836  df-nfc 2910  df-ne 2957  df-ral 3078  df-rex 3088  df-reu 3367  df-rab 3414  df-v 3453  df-sbc 3740  df-csb 3848  df-dif 3902  df-un 3904  df-in 3906  df-ss 3916  df-nul 4280  df-if 4483  df-sn 4585  df-pr 4587  df-op 4591  df-uni 4868  df-iun 4953  df-br 5104  df-opab 5168  df-mpt 5187  df-id 5546  df-xp 5657  df-rel 5658  df-cnv 5659  df-co 5660  df-dm 5661  df-rn 5662  df-res 5663  df-ima 5664  df-iota 6494  df-fun 6540  df-fn 6541  df-f 6542  df-f1 6543  df-fo 6544  df-f1o 6545  df-fv 6546  df-ofr 7694
This theorem is used by:  psrridm  22270  itg2itg1  26057  itg20  26058
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