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Theorem caofref 7707
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 5115 . . . 4 (𝑥 = (𝐹‘𝑤) → (𝑥𝑅𝑥 ↔ (𝐹‘𝑤)𝑅(𝐹‘𝑤)))
3 caofref.3 . . . . . 6 ((𝜑 ∧ 𝑥 ∈ 𝑆) → 𝑥𝑅𝑥)
43ralrimiva 3154 . . . . 5 (𝜑 → ∀𝑥 ∈ 𝑆 𝑥𝑅𝑥)
54adantr 486 . . . 4 ((𝜑 ∧ 𝑤 ∈ 𝐴) → ∀𝑥 ∈ 𝑆 𝑥𝑅𝑥)
6 caofref.2 . . . . 5 (𝜑 → 𝐹:𝐴⟶𝑆)
76ffvelcdmda 7072 . . . 4 ((𝜑 ∧ 𝑤 ∈ 𝐴) → (𝐹‘𝑤) ∈ 𝑆)
82, 5, 7rspcdva 3577 . . 3 ((𝜑 ∧ 𝑤 ∈ 𝐴) → (𝐹‘𝑤)𝑅(𝐹‘𝑤))
98ralrimiva 3154 . 2 (𝜑 → ∀𝑤 ∈ 𝐴 (𝐹‘𝑤)𝑅(𝐹‘𝑤))
106ffnd 6698 . . 3 (𝜑 → 𝐹 Fn 𝐴)
11 caofref.1 . . 3 (𝜑 → 𝐴 ∈ 𝑉)
12 inidm 4171 . . 3 (𝐴 ∩ 𝐴) = 𝐴
13 eqidd 2761 . . 3 ((𝜑 ∧ 𝑤 ∈ 𝐴) → (𝐹‘𝑤) = (𝐹‘𝑤))
1410, 10, 11, 11, 12, 13, 13ofrfval 7686 . 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 3076   class class class wbr 5102  ⟶wf 6523  ‘cfv 6527   ∘r cofr 7675
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 2732  ax-rep 5231  ax-sep 5248  ax-nul 5259  ax-pr 5390
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 2564  df-eu 2594  df-clab 2739  df-cleq 2752  df-clel 2835  df-nfc 2909  df-ne 2956  df-ral 3077  df-rex 3087  df-reu 3366  df-rab 3413  df-v 3452  df-sbc 3739  df-csb 3847  df-dif 3901  df-un 3903  df-in 3905  df-ss 3915  df-nul 4279  df-if 4482  df-sn 4584  df-pr 4586  df-op 4590  df-uni 4867  df-iun 4952  df-br 5103  df-opab 5167  df-mpt 5186  df-id 5542  df-xp 5653  df-rel 5654  df-cnv 5655  df-co 5656  df-dm 5657  df-rn 5658  df-res 5659  df-ima 5660  df-iota 6483  df-fun 6529  df-fn 6530  df-f 6531  df-f1 6532  df-fo 6533  df-f1o 6534  df-fv 6535  df-ofr 7677
This theorem is used by:  psrridm  22231  itg2itg1  26018  itg20  26019
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