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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 5955 | . . 3 ⊢ (𝐴 = 𝐵 → (𝐴 ↾ 𝐶) = (𝐵 ↾ 𝐶)) | |
| 2 | 1 | rneqd 5910 | . 2 ⊢ (𝐴 = 𝐵 → ran (𝐴 ↾ 𝐶) = ran (𝐵 ↾ 𝐶)) |
| 3 | df-ima 5656 | . 2 ⊢ (𝐴 “ 𝐶) = ran (𝐴 ↾ 𝐶) | |
| 4 | df-ima 5656 | . 2 ⊢ (𝐵 “ 𝐶) = ran (𝐵 ↾ 𝐶) | |
| 5 | 2, 3, 4 | 3eqtr4g 2821 | 1 ⊢ (𝐴 = 𝐵 → (𝐴 “ 𝐶) = (𝐵 “ 𝐶)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1559 ran crn 5644 ↾ cres 5645 “ cima 5646 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1814 ax-4 1828 ax-5 1929 ax-6 1986 ax-7 2027 ax-8 2143 ax-9 2151 ax-ext 2733 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-3an 1099 df-tru 1562 df-fal 1572 df-ex 1799 df-sb 2090 df-clab 2740 df-cleq 2753 df-clel 2836 df-rab 3414 df-v 3455 df-dif 3905 df-un 3907 df-in 3909 df-ss 3919 df-nul 4284 df-if 4478 df-sn 4580 df-pr 4582 df-op 4586 df-br 5098 df-opab 5160 df-cnv 5651 df-dm 5653 df-rn 5654 df-res 5655 df-ima 5656 |
| This theorem is referenced by: imaeq1i 6042 imaeq1d 6044 suppval 8136 naddcllem 8640 eceq2 8714 marypha1lem 9373 marypha1 9374 ackbij2lem2 10189 ackbij2lem3 10190 r1om 10193 limsupval 15492 isacs1i 17680 mreacs 17681 islindf 21852 iscnp 23285 xkoccn 23667 xkohaus 23701 xkoco1cn 23705 xkoco2cn 23706 xkococnlem 23707 xkococn 23708 xkoinjcn 23735 fmval 23991 fmf 23993 utoptop 24282 restutop 24285 restutopopn 24286 ustuqtoplem 24287 ustuqtop1 24289 ustuqtop2 24290 ustuqtop4 24292 ustuqtop5 24293 utopsnneiplem 24295 utopsnnei 24297 neipcfilu 24343 psmetutop 24615 cfilfval 25314 elply2 26244 coeeu 26273 coelem 26274 coeeq 26275 dmarea 27010 negsval 28106 mclsax 35880 tailfval 36693 bj-cleq 37408 bj-funun 37705 poimirlem15 38095 poimirlem24 38104 brtrclfv2 44264 liminfval 46294 ushggricedg 48510 uhgrimisgrgric 48514 |
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