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| Mirrors > Home > MPE Home > Th. List > imaeq1 | Structured version Visualization version GIF version | ||
| Description: Equality theorem for image. (Contributed by NM, 14-Aug-1994.) |
| Ref | Expression |
|---|---|
| imaeq1 | ⊢ (𝐴 = 𝐵 → (𝐴 “ 𝐶) = (𝐵 “ 𝐶)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | reseq1 5980 | . . 3 ⊢ (𝐴 = 𝐵 → (𝐴 ↾ 𝐶) = (𝐵 ↾ 𝐶)) | |
| 2 | 1 | rneqd 5932 | . 2 ⊢ (𝐴 = 𝐵 → ran (𝐴 ↾ 𝐶) = ran (𝐵 ↾ 𝐶)) |
| 3 | df-ima 5671 | . 2 ⊢ (𝐴 “ 𝐶) = ran (𝐴 ↾ 𝐶) | |
| 4 | df-ima 5671 | . 2 ⊢ (𝐵 “ 𝐶) = ran (𝐵 ↾ 𝐶) | |
| 5 | 2, 3, 4 | 3eqtr4g 2823 | 1 ⊢ (𝐴 = 𝐵 → (𝐴 “ 𝐶) = (𝐵 “ 𝐶)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 = wceq 1570 ran crn 5659 ↾ cres 5660 “ cima 5661 |
| 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 |
| 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-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-cnv 5666 df-dm 5668 df-rn 5669 df-res 5670 df-ima 5671 |
| This theorem is used by: imaeq1i 6067 imaeq1d 6069 suppval 8216 naddcllem 8723 eceq2 8797 marypha1lem 9462 marypha1 9463 ackbij2lem2 10356 ackbij2lem3 10357 hfom 10360 limsupval 15685 isacs1i 17881 mreacs 17882 islindf 22173 iscnp 23610 xkoccn 23993 xkohaus 24027 xkoco1cn 24031 xkoco2cn 24032 xkococnlem 24033 xkococn 24034 xkoinjcn 24061 fmval 24317 fmf 24319 utoptop 24608 restutop 24611 restutopopn 24612 ustuqtoplem 24613 ustuqtop1 24615 ustuqtop2 24616 ustuqtop4 24618 ustuqtop5 24619 utopsnneiplem 24621 utopsnnei 24623 neipcfilu 24669 psmetutop 24941 cfilfval 25640 elply2 26569 coeeu 26599 coelem 26600 coeeq 26601 dmarea 27342 negsval 28468 mclsax 36542 tailfval 37375 bj-cleq 38090 bj-funun 38441 poimirlem15 38821 poimirlem24 38830 brtrclfv2 44988 ackbij3 46289 liminfval 47042 ushggricedg 49298 uhgrimisgrgric 49302 |
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