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| Mirrors > Home > MPE Home > Th. List > f1ores | Structured version Visualization version GIF version | ||
| Description: The restriction of a one-to-one function maps one-to-one onto the image. (Contributed by NM, 25-Mar-1998.) |
| Ref | Expression |
|---|---|
| f1ores | ⊢ ((𝐹:𝐴–1-1→𝐵 ∧ 𝐶 ⊆ 𝐴) → (𝐹 ↾ 𝐶):𝐶–1-1-onto→(𝐹 “ 𝐶)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | f1ssres 6795 | . . 3 ⊢ ((𝐹:𝐴–1-1→𝐵 ∧ 𝐶 ⊆ 𝐴) → (𝐹 ↾ 𝐶):𝐶–1-1→𝐵) | |
| 2 | f1f1orn 6844 | . . 3 ⊢ ((𝐹 ↾ 𝐶):𝐶–1-1→𝐵 → (𝐹 ↾ 𝐶):𝐶–1-1-onto→ran (𝐹 ↾ 𝐶)) | |
| 3 | 1, 2 | syl 18 | . 2 ⊢ ((𝐹:𝐴–1-1→𝐵 ∧ 𝐶 ⊆ 𝐴) → (𝐹 ↾ 𝐶):𝐶–1-1-onto→ran (𝐹 ↾ 𝐶)) |
| 4 | df-ima 5667 | . . 3 ⊢ (𝐹 “ 𝐶) = ran (𝐹 ↾ 𝐶) | |
| 5 | f1oeq3 6822 | . . 3 ⊢ ((𝐹 “ 𝐶) = ran (𝐹 ↾ 𝐶) → ((𝐹 ↾ 𝐶):𝐶–1-1-onto→(𝐹 “ 𝐶) ↔ (𝐹 ↾ 𝐶):𝐶–1-1-onto→ran (𝐹 ↾ 𝐶))) | |
| 6 | 4, 5 | ax-mp 5 | . 2 ⊢ ((𝐹 ↾ 𝐶):𝐶–1-1-onto→(𝐹 “ 𝐶) ↔ (𝐹 ↾ 𝐶):𝐶–1-1-onto→ran (𝐹 ↾ 𝐶)) |
| 7 | 3, 6 | sylibr 237 | 1 ⊢ ((𝐹:𝐴–1-1→𝐵 ∧ 𝐶 ⊆ 𝐴) → (𝐹 ↾ 𝐶):𝐶–1-1-onto→(𝐹 “ 𝐶)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ↔ wb 209 ∧ wa 401 = wceq 1569 ⊆ wss 3899 ran crn 5655 ↾ cres 5656 “ cima 5657 –1-1→wf1 6543 –1-1-onto→wf1o 6545 |
| 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-ext 2735 ax-sep 5251 ax-pr 5394 |
| 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-sb 2101 df-clab 2742 df-cleq 2755 df-clel 2838 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-nul 4281 df-if 4485 df-sn 4588 df-pr 4590 df-op 4838 df-br 5106 df-opab 5170 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-fun 6548 df-fn 6549 df-f 6550 df-f1 6551 df-fo 6552 df-f1o 6553 |
| This theorem is used by: f1imacnv 6849 f1oresrab 7136 f1ocoima 7318 isores3 7350 isoini2 7354 f1imaeng 9052 f1imaen2g 9053 f1imaen3g 9054 domunsncan 9107 ssfiALT 9200 f1imaenfi 9221 php3 9235 infdifsn 9668 infxpenlem 10102 ackbij2lem2 10327 fin1a2lem6 10493 grothomex 10924 fsumss 15903 ackbijnn 16009 fprodss 16127 unbenlem 17098 eqgen 19405 symgfixelsi 19661 gsumval3lem1 20131 gsumval3lem2 20132 gsumzaddlem 20147 lindsmm 22146 coe1mul2lem2 22599 tsmsf1o 24476 ovoliunlem1 25835 dvcnvrelem2 26350 logf1o2 26990 dvlog 26991 ushgredgedg 29822 ushgredgedgloop 29824 trlreslem 30294 adjbd1o 32699 rinvf1o 33278 padct 33364 hashimaf1 33455 indf1ofs 33486 eulerpartgbij 35057 eulerpartlemgh 35063 ballotlemfrc 35212 reprpmtf1o 35308 vonf1onprcf1ac 35998 erdsze2lem2 36090 poimirlem4 38682 poimirlem9 38687 ismtyres 38882 pwfi2f1o 44238 sge0f1o 47531 3f1oss1 48284 f1oresf1o 48499 uhgrimisgrgric 49168 |
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