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Theorem brimage 36815
Description: Binary relation form of the Image functor. (Contributed by Scott Fenton, 4-Apr-2014.) (Revised by Mario Carneiro, 19-Apr-2014.)
Hypotheses
Ref Expression
brimage.1 𝐴 ∈ V
brimage.2 𝐵 ∈ V
Assertion
Ref Expression
brimage (𝐴Image𝑅𝐵 ↔ 𝐵 = (𝑅 “ 𝐴))

Proof of Theorem brimage
Dummy variables 𝑥 𝑦 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 brimage.1 . 2 𝐴 ∈ V
2 brimage.2 . 2 𝐵 ∈ V
3 df-image 36753 . 2 Image𝑅 = ((V × V) ∖ ran ((V ⊗ E ) △ (( E ∘ ◡𝑅) ⊗ V)))
4 brxp 5703 . . 3 (𝐴(V × V)𝐵 ↔ (𝐴 ∈ V ∧ 𝐵 ∈ V))
51, 2, 4mpbir2an 724 . 2 𝐴(V × V)𝐵
6 vex 3457 . . . . 5 𝑥 ∈ V
7 vex 3457 . . . . 5 𝑦 ∈ V
86, 7brcnv 5864 . . . 4 (𝑥◡𝑅𝑦 ↔ 𝑦𝑅𝑥)
98rexbii 3112 . . 3 (∃𝑦 ∈ 𝐴 𝑥◡𝑅𝑦 ↔ ∃𝑦 ∈ 𝐴 𝑦𝑅𝑥)
106, 1coep 36644 . . 3 (𝑥( E ∘ ◡𝑅)𝐴 ↔ ∃𝑦 ∈ 𝐴 𝑥◡𝑅𝑦)
116elima 6066 . . 3 (𝑥 ∈ (𝑅 “ 𝐴) ↔ ∃𝑦 ∈ 𝐴 𝑦𝑅𝑥)
129, 10, 113bitr4ri 307 . 2 (𝑥 ∈ (𝑅 “ 𝐴) ↔ 𝑥( E ∘ ◡𝑅)𝐴)
131, 2, 3, 5, 12brtxpsd3 36785 1 (𝐴Image𝑅𝐵 ↔ 𝐵 = (𝑅 “ 𝐴))
Colors of variables:    wff setvar class
This proof depends on syntax axioms:   ↔ wb 209   = wceq 1569   ∈ wcel 2146  ∃wrex 3089  Vcvv 3453   class class class wbr 5105   E cep 5553   × cxp 5652  ◡ccnv 5653   “ cima 5657   ∘ ccom 5658  Imagecimage 36729
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1827  ax-4 1841  ax-5 1944  ax-6 2001  ax-7 2042  ax-8 2148  ax-9 2156  ax-10 2179  ax-11 2196  ax-12 2215  ax-ext 2735  ax-sep 5251  ax-nul 5262  ax-pr 5394  ax-un 7758
This proof depends on definitions:  df-bi 210  df-an 402  df-or 862  df-3an 1105  df-tru 1572  df-fal 1582  df-ex 1812  df-nf 1816  df-sb 2101  df-mo 2567  df-eu 2597  df-clab 2742  df-cleq 2755  df-clel 2838  df-nfc 2912  df-ne 2959  df-ral 3080  df-rex 3090  df-rab 3416  df-v 3455  df-ss 3900  df-dif 4049  df-in 4093  df-un 4153  df-symdif 4200  df-nul 4281  df-if 4485  df-sn 4588  df-pr 4590  df-op 4838  df-uni 4870  df-br 5106  df-opab 5170  df-mpt 5189  df-id 5549  df-eprel 5554  df-xp 5660  df-rel 5661  df-cnv 5662  df-co 5663  df-dm 5664  df-rn 5665  df-res 5666  df-ima 5667  df-iota 6500  df-fun 6548  df-fn 6549  df-f 6550  df-fo 6552  df-fv 6554  df-1st 8008  df-2nd 8009  df-txp 36743  df-image 36753
This theorem is used by:  brimageg  36816  funimage  36817  fnimage  36818  imageval  36819  brdomain  36822  brrange  36823  brimg  36826  funpartlem  36833  imagesset  36844
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