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| Mirrors > Home > MPE Home > Th. List > Mathboxes > brimage | Structured version Visualization version GIF version | ||
| Description: Binary relation form of the Image functor. (Contributed by Scott Fenton, 4-Apr-2014.) (Revised by Mario Carneiro, 19-Apr-2014.) |
| Ref | Expression |
|---|---|
| brimage.1 | ⊢ 𝐴 ∈ V |
| brimage.2 | ⊢ 𝐵 ∈ V |
| Ref | Expression |
|---|---|
| brimage | ⊢ (𝐴Image𝑅𝐵 ↔ 𝐵 = (𝑅 “ 𝐴)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | brimage.1 | . 2 ⊢ 𝐴 ∈ V | |
| 2 | brimage.2 | . 2 ⊢ 𝐵 ∈ V | |
| 3 | df-image 36444 | . 2 ⊢ Image𝑅 = ((V × V) ∖ ran ((V ⊗ E ) △ (( E ∘ ◡𝑅) ⊗ V))) | |
| 4 | brxp 5704 | . . 3 ⊢ (𝐴(V × V)𝐵 ↔ (𝐴 ∈ V ∧ 𝐵 ∈ V)) | |
| 5 | 1, 2, 4 | mpbir2an 724 | . 2 ⊢ 𝐴(V × V)𝐵 |
| 6 | vex 3454 | . . . . 5 ⊢ 𝑥 ∈ V | |
| 7 | vex 3454 | . . . . 5 ⊢ 𝑦 ∈ V | |
| 8 | 6, 7 | brcnv 5862 | . . . 4 ⊢ (𝑥◡𝑅𝑦 ↔ 𝑦𝑅𝑥) |
| 9 | 8 | rexbii 3109 | . . 3 ⊢ (∃𝑦 ∈ 𝐴 𝑥◡𝑅𝑦 ↔ ∃𝑦 ∈ 𝐴 𝑦𝑅𝑥) |
| 10 | 6, 1 | coep 36334 | . . 3 ⊢ (𝑥( E ∘ ◡𝑅)𝐴 ↔ ∃𝑦 ∈ 𝐴 𝑥◡𝑅𝑦) |
| 11 | 6 | elima 6061 | . . 3 ⊢ (𝑥 ∈ (𝑅 “ 𝐴) ↔ ∃𝑦 ∈ 𝐴 𝑦𝑅𝑥) |
| 12 | 9, 10, 11 | 3bitr4ri 307 | . 2 ⊢ (𝑥 ∈ (𝑅 “ 𝐴) ↔ 𝑥( E ∘ ◡𝑅)𝐴) |
| 13 | 1, 2, 3, 5, 12 | brtxpsd3 36476 | 1 ⊢ (𝐴Image𝑅𝐵 ↔ 𝐵 = (𝑅 “ 𝐴)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ↔ wb 209 = wceq 1570 ∈ wcel 2145 ∃wrex 3086 Vcvv 3450 class class class wbr 5103 E cep 5554 × cxp 5653 ◡ccnv 5654 “ cima 5658 ∘ ccom 5659 Imagecimage 36420 |
| 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-sep 5251 ax-nul 5263 ax-pr 5398 ax-un 7737 |
| 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-rab 3413 df-v 3452 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-symdif 4199 df-nul 4280 df-if 4483 df-sn 4585 df-pr 4587 df-op 4591 df-uni 4868 df-br 5104 df-opab 5168 df-mpt 5187 df-id 5550 df-eprel 5555 df-xp 5661 df-rel 5662 df-cnv 5663 df-co 5664 df-dm 5665 df-rn 5666 df-res 5667 df-ima 5668 df-iota 6489 df-fun 6535 df-fn 6536 df-f 6537 df-fo 6539 df-fv 6541 df-1st 7987 df-2nd 7988 df-txp 36434 df-image 36444 |
| This theorem is used by: brimageg 36507 funimage 36508 fnimage 36509 imageval 36510 brdomain 36513 brrange 36514 brimg 36517 funpartlem 36524 imagesset 36535 |
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