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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 5971 | . . 3 ⊢ (𝐴 = 𝐵 → (𝐴 ↾ 𝐶) = (𝐵 ↾ 𝐶)) | |
| 2 | 1 | rneqd 5927 | . 2 ⊢ (𝐴 = 𝐵 → ran (𝐴 ↾ 𝐶) = ran (𝐵 ↾ 𝐶)) |
| 3 | df-ima 5673 | . 2 ⊢ (𝐴 “ 𝐶) = ran (𝐴 ↾ 𝐶) | |
| 4 | df-ima 5673 | . 2 ⊢ (𝐵 “ 𝐶) = ran (𝐵 ↾ 𝐶) | |
| 5 | 2, 3, 4 | 3eqtr4g 2822 | 1 ⊢ (𝐴 = 𝐵 → (𝐴 “ 𝐶) = (𝐵 “ 𝐶)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 = wceq 1569 ran crn 5661 ↾ cres 5662 “ cima 5663 |
| 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-ext 2734 |
| 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-sb 2096 df-clab 2741 df-cleq 2754 df-clel 2837 df-rab 3416 df-v 3456 df-dif 3907 df-un 3909 df-in 3911 df-ss 3921 df-nul 4286 df-if 4487 df-sn 4589 df-pr 4591 df-op 4595 df-br 5109 df-opab 5173 df-cnv 5668 df-dm 5670 df-rn 5671 df-res 5672 df-ima 5673 |
| This theorem is used by: imaeq1i 6058 imaeq1d 6060 suppval 8156 naddcllem 8660 eceq2 8734 marypha1lem 9391 marypha1 9392 ackbij2lem2 10229 ackbij2lem3 10230 r1om 10233 limsupval 15532 isacs1i 17719 mreacs 17720 islindf 21973 iscnp 23405 xkoccn 23787 xkohaus 23821 xkoco1cn 23825 xkoco2cn 23826 xkococnlem 23827 xkococn 23828 xkoinjcn 23855 fmval 24111 fmf 24113 utoptop 24402 restutop 24405 restutopopn 24406 ustuqtoplem 24407 ustuqtop1 24409 ustuqtop2 24410 ustuqtop4 24412 ustuqtop5 24413 utopsnneiplem 24415 utopsnnei 24417 neipcfilu 24463 psmetutop 24735 cfilfval 25434 elply2 26364 coeeu 26393 coelem 26394 coeeq 26395 dmarea 27133 negsval 28229 mclsax 36069 tailfval 36911 bj-cleq 37626 bj-funun 37924 poimirlem15 38314 poimirlem24 38323 brtrclfv2 44481 liminfval 46501 ushggricedg 48720 uhgrimisgrgric 48724 |
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