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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 5964 | . . 3 ⊢ (𝐴 = 𝐵 → (𝐴 ↾ 𝐶) = (𝐵 ↾ 𝐶)) | |
| 2 | 1 | rneqd 5920 | . 2 ⊢ (𝐴 = 𝐵 → ran (𝐴 ↾ 𝐶) = ran (𝐵 ↾ 𝐶)) |
| 3 | df-ima 5663 | . 2 ⊢ (𝐴 “ 𝐶) = ran (𝐴 ↾ 𝐶) | |
| 4 | df-ima 5663 | . 2 ⊢ (𝐵 “ 𝐶) = ran (𝐵 ↾ 𝐶) | |
| 5 | 2, 3, 4 | 3eqtr4g 2820 | 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 5651 ↾ cres 5652 “ cima 5653 |
| 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 1942 ax-6 1999 ax-7 2040 ax-8 2146 ax-9 2154 ax-ext 2732 |
| 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 2099 df-clab 2739 df-cleq 2752 df-clel 2835 df-rab 3413 df-v 3452 df-ss 3897 df-dif 4046 df-in 4090 df-un 4150 df-nul 4278 df-if 4482 df-sn 4585 df-pr 4587 df-op 4835 df-br 5103 df-opab 5167 df-cnv 5658 df-dm 5660 df-rn 5661 df-res 5662 df-ima 5663 |
| This theorem is used by: imaeq1i 6050 imaeq1d 6052 suppval 8183 naddcllem 8690 eceq2 8764 marypha1lem 9430 marypha1 9431 ackbij2lem2 10322 ackbij2lem3 10323 hfom 10326 limsupval 15648 isacs1i 17838 mreacs 17839 islindf 22125 iscnp 23562 xkoccn 23945 xkohaus 23979 xkoco1cn 23983 xkoco2cn 23984 xkococnlem 23985 xkococn 23986 xkoinjcn 24013 fmval 24269 fmf 24271 utoptop 24560 restutop 24563 restutopopn 24564 ustuqtoplem 24565 ustuqtop1 24567 ustuqtop2 24568 ustuqtop4 24570 ustuqtop5 24571 utopsnneiplem 24573 utopsnnei 24575 neipcfilu 24621 psmetutop 24893 cfilfval 25592 elply2 26521 coeeu 26551 coelem 26552 coeeq 26553 dmarea 27292 negsval 28418 mclsax 36422 tailfval 37254 bj-cleq 37969 bj-funun 38280 poimirlem15 38660 poimirlem24 38669 brtrclfv2 44834 liminfval 46876 ushggricedg 49132 uhgrimisgrgric 49136 |
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