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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⟶1-1𝐵 ∧ 𝐶 ⊆ 𝐴) → (𝐹 ↾ 𝐶):𝐶⟶1-1onto(𝐹 “ 𝐶)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | f1ssres 6817 | . . 3 ⊢ ((𝐹:𝐴⟶1-1𝐵 ∧ 𝐶 ⊆ 𝐴) → (𝐹 ↾ 𝐶):𝐶⟶1-1𝐵) | |
| 2 | f1f1orn 6866 | . . 3 ⊢ ((𝐹 ↾ 𝐶):𝐶⟶1-1𝐵 → (𝐹 ↾ 𝐶):𝐶⟶1-1ontoran (𝐹 ↾ 𝐶)) | |
| 3 | 1, 2 | syl 18 | . 2 ⊢ ((𝐹:𝐴⟶1-1𝐵 ∧ 𝐶 ⊆ 𝐴) → (𝐹 ↾ 𝐶):𝐶⟶1-1ontoran (𝐹 ↾ 𝐶)) |
| 4 | df-ima 5671 | . . 3 ⊢ (𝐹 “ 𝐶) = ran (𝐹 ↾ 𝐶) | |
| 5 | f1oeq3 6844 | . . 3 ⊢ ((𝐹 “ 𝐶) = ran (𝐹 ↾ 𝐶) → ((𝐹 ↾ 𝐶):𝐶⟶1-1onto(𝐹 “ 𝐶) ↔ (𝐹 ↾ 𝐶):𝐶⟶1-1ontoran (𝐹 ↾ 𝐶))) | |
| 6 | 4, 5 | ax-mp 5 | . 2 ⊢ ((𝐹 ↾ 𝐶):𝐶⟶1-1onto(𝐹 “ 𝐶) ↔ (𝐹 ↾ 𝐶):𝐶⟶1-1ontoran (𝐹 ↾ 𝐶)) |
| 7 | 3, 6 | sylibr 237 | 1 ⊢ ((𝐹:𝐴⟶1-1𝐵 ∧ 𝐶 ⊆ 𝐴) → (𝐹 ↾ 𝐶):𝐶⟶1-1onto(𝐹 “ 𝐶)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ↔ wb 209 ∧ wa 401 = wceq 1570 ⊆ wss 3900 ran crn 5659 ↾ cres 5660 “ cima 5661 ⟶1-1wf1 6563 ⟶1-1ontowf1o 6565 |
| 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 1945 ax-6 2002 ax-7 2043 ax-8 2149 ax-9 2157 ax-ext 2735 ax-sep 5255 ax-pr 5398 |
| 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-sb 2102 df-clab 2742 df-cleq 2755 df-clel 2839 df-ral 3081 df-rex 3091 df-rab 3417 df-v 3456 df-ss 3901 df-dif 4050 df-in 4094 df-un 4154 df-nul 4282 df-if 4486 df-sn 4589 df-pr 4591 df-op 4841 df-br 5109 df-opab 5174 df-xp 5664 df-rel 5665 df-cnv 5666 df-co 5667 df-dm 5668 df-rn 5669 df-res 5670 df-ima 5671 df-fun 6568 df-fn 6569 df-f 6570 df-f1 6571 df-fo 6572 df-f1o 6573 |
| This theorem is used by: f1imacnv 6871 f1oresrab 7160 f1ocoima 7342 isores3 7374 isoini2 7378 f1imaeng 9079 f1imaen2g 9080 f1imaen3g 9081 domunsncan 9134 ssfiALT 9227 f1imaenfi 9248 php3 9262 infdifsn 9695 infxpenlem 10131 ackbij2lem2 10356 fin1a2lem6 10522 grothomex 10953 fsumss 15935 ackbijnn 16041 fprodss 16159 unbenlem 17130 eqgen 19443 symgfixelsi 19700 gsumval3lem1 20170 gsumval3lem2 20171 gsumzaddlem 20186 lindsmm 22189 coe1mul2lem2 22642 tsmsf1o 24519 ovoliunlem1 25878 dvcnvrelem2 26393 logf1o2 27035 dvlog 27036 ushgredgedg 29867 ushgredgedgloop 29869 trlreslem 30339 adjbd1o 32744 rinvf1o 33322 padct 33407 hashimaf1 33498 indf1ofs 33529 eulerpartgbij 35115 eulerpartlemgh 35121 ballotlemfrc 35270 reprpmtf1o 35366 vonf1onprcf1ac 36085 erdsze2lem2 36177 poimirlem4 38810 poimirlem9 38815 ismtyres 39008 pwfi2f1o 44364 sge0f1o 47665 3f1oss1 48418 f1oresf1o 48633 uhgrimisgrgric 49302 |
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