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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 36362 | . 2 ⊢ Image𝑅 = ((V × V) ∖ ran ((V ⊗ E ) △ (( E ∘ ◡𝑅) ⊗ V))) | |
| 4 | brxp 5709 | . . 3 ⊢ (𝐴(V × V)𝐵 ↔ (𝐴 ∈ V ∧ 𝐵 ∈ V)) | |
| 5 | 1, 2, 4 | mpbir2an 723 | . 2 ⊢ 𝐴(V × V)𝐵 |
| 6 | vex 3458 | . . . . 5 ⊢ 𝑥 ∈ V | |
| 7 | vex 3458 | . . . . 5 ⊢ 𝑦 ∈ V | |
| 8 | 6, 7 | brcnv 5867 | . . . 4 ⊢ (𝑥◡𝑅𝑦 ↔ 𝑦𝑅𝑥) |
| 9 | 8 | rexbii 3111 | . . 3 ⊢ (∃𝑦 ∈ 𝐴 𝑥◡𝑅𝑦 ↔ ∃𝑦 ∈ 𝐴 𝑦𝑅𝑥) |
| 10 | 6, 1 | coep 36252 | . . 3 ⊢ (𝑥( E ∘ ◡𝑅)𝐴 ↔ ∃𝑦 ∈ 𝐴 𝑥◡𝑅𝑦) |
| 11 | 6 | elima 6066 | . . 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 36394 | 1 ⊢ (𝐴Image𝑅𝐵 ↔ 𝐵 = (𝑅 “ 𝐴)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ↔ wb 209 = wceq 1569 ∈ wcel 2142 ∃wrex 3088 Vcvv 3454 class class class wbr 5108 E cep 5559 × cxp 5658 ◡ccnv 5659 “ cima 5663 ∘ ccom 5664 Imagecimage 36338 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1824 ax-4 1838 ax-5 1939 ax-6 1996 ax-7 2037 ax-8 2144 ax-9 2152 ax-10 2175 ax-11 2191 ax-12 2212 ax-ext 2734 ax-sep 5256 ax-nul 5268 ax-pr 5403 ax-un 7734 |
| This proof depends on definitions: df-bi 210 df-an 401 df-or 861 df-3an 1104 df-tru 1572 df-fal 1582 df-ex 1809 df-nf 1813 df-sb 2096 df-mo 2566 df-eu 2596 df-clab 2741 df-cleq 2754 df-clel 2837 df-nfc 2911 df-ne 2958 df-ral 3079 df-rex 3089 df-rab 3416 df-v 3456 df-dif 3907 df-un 3909 df-in 3911 df-ss 3921 df-symdif 4205 df-nul 4286 df-if 4487 df-sn 4589 df-pr 4591 df-op 4595 df-uni 4872 df-br 5109 df-opab 5173 df-mpt 5192 df-id 5555 df-eprel 5560 df-xp 5666 df-rel 5667 df-cnv 5668 df-co 5669 df-dm 5670 df-rn 5671 df-res 5672 df-ima 5673 df-iota 6492 df-fun 6538 df-fn 6539 df-f 6540 df-fo 6542 df-fv 6544 df-1st 7984 df-2nd 7985 df-txp 36352 df-image 36362 |
| This theorem is used by: brimageg 36425 funimage 36426 fnimage 36427 imageval 36428 brdomain 36431 brrange 36432 brimg 36435 funpartlem 36442 imagesset 36453 |
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