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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 5972 | . . 3 ⊢ (𝐴 = 𝐵 → (𝐴 ↾ 𝐶) = (𝐵 ↾ 𝐶)) | |
| 2 | 1 | rneqd 5928 | . 2 ⊢ (𝐴 = 𝐵 → ran (𝐴 ↾ 𝐶) = ran (𝐵 ↾ 𝐶)) |
| 3 | df-ima 5674 | . 2 ⊢ (𝐴 “ 𝐶) = ran (𝐴 ↾ 𝐶) | |
| 4 | df-ima 5674 | . 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 |
| Syntax hints: → wi 4 = wceq 1570 ran crn 5662 ↾ cres 5663 “ cima 5664 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1825 ax-4 1839 ax-5 1940 ax-6 1997 ax-7 2038 ax-8 2145 ax-9 2153 ax-ext 2735 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1810 df-sb 2097 df-clab 2742 df-cleq 2755 df-clel 2838 df-rab 3417 df-v 3457 df-dif 3908 df-un 3910 df-in 3912 df-ss 3922 df-nul 4287 df-if 4488 df-sn 4590 df-pr 4592 df-op 4596 df-br 5110 df-opab 5174 df-cnv 5669 df-dm 5671 df-rn 5672 df-res 5673 df-ima 5674 |
| This theorem is referenced by: imaeq1i 6059 imaeq1d 6061 suppval 8154 naddcllem 8658 eceq2 8732 marypha1lem 9389 marypha1 9390 ackbij2lem2 10218 ackbij2lem3 10219 r1om 10222 limsupval 15521 isacs1i 17708 mreacs 17709 islindf 21962 iscnp 23394 xkoccn 23776 xkohaus 23810 xkoco1cn 23814 xkoco2cn 23815 xkococnlem 23816 xkococn 23817 xkoinjcn 23844 fmval 24100 fmf 24102 utoptop 24391 restutop 24394 restutopopn 24395 ustuqtoplem 24396 ustuqtop1 24398 ustuqtop2 24399 ustuqtop4 24401 ustuqtop5 24402 utopsnneiplem 24404 utopsnnei 24406 neipcfilu 24452 psmetutop 24724 cfilfval 25423 elply2 26353 coeeu 26382 coelem 26383 coeeq 26384 dmarea 27122 negsval 28218 mclsax 36061 tailfval 36883 bj-cleq 37598 bj-funun 37896 poimirlem15 38286 poimirlem24 38295 brtrclfv2 44453 liminfval 46473 ushggricedg 48692 uhgrimisgrgric 48696 |
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