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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 5966 | . . 3 ⊢ (𝐴 = 𝐵 → (𝐴 ↾ 𝐶) = (𝐵 ↾ 𝐶)) | |
| 2 | 1 | rneqd 5922 | . 2 ⊢ (𝐴 = 𝐵 → ran (𝐴 ↾ 𝐶) = ran (𝐵 ↾ 𝐶)) |
| 3 | df-ima 5668 | . 2 ⊢ (𝐴 “ 𝐶) = ran (𝐴 ↾ 𝐶) | |
| 4 | df-ima 5668 | . 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 1570 ran crn 5656 ↾ cres 5657 “ cima 5658 |
| 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 1943 ax-6 2000 ax-7 2041 ax-8 2147 ax-9 2155 ax-ext 2732 |
| 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 2100 df-clab 2739 df-cleq 2752 df-clel 2835 df-rab 3413 df-v 3452 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-nul 4280 df-if 4483 df-sn 4585 df-pr 4587 df-op 4591 df-br 5104 df-opab 5168 df-cnv 5663 df-dm 5665 df-rn 5666 df-res 5667 df-ima 5668 |
| This theorem is used by: imaeq1i 6053 imaeq1d 6055 suppval 8160 naddcllem 8664 eceq2 8738 marypha1lem 9403 marypha1 9404 ackbij2lem2 10241 ackbij2lem3 10242 r1om 10245 limsupval 15561 isacs1i 17745 mreacs 17746 islindf 22025 iscnp 23462 xkoccn 23845 xkohaus 23879 xkoco1cn 23883 xkoco2cn 23884 xkococnlem 23885 xkococn 23886 xkoinjcn 23913 fmval 24169 fmf 24171 utoptop 24460 restutop 24463 restutopopn 24464 ustuqtoplem 24465 ustuqtop1 24467 ustuqtop2 24468 ustuqtop4 24470 ustuqtop5 24471 utopsnneiplem 24473 utopsnnei 24475 neipcfilu 24521 psmetutop 24793 cfilfval 25492 elply2 26421 coeeu 26451 coelem 26452 coeeq 26453 dmarea 27194 negsval 28290 mclsax 36148 tailfval 36991 bj-cleq 37706 bj-funun 38004 poimirlem15 38384 poimirlem24 38393 brtrclfv2 44567 liminfval 46587 ushggricedg 48843 uhgrimisgrgric 48847 |
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