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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 5974 | . . 3 ⊢ (𝐴 = 𝐵 → (𝐴 ↾ 𝐶) = (𝐵 ↾ 𝐶)) | |
| 2 | 1 | rneqd 5930 | . 2 ⊢ (𝐴 = 𝐵 → ran (𝐴 ↾ 𝐶) = ran (𝐵 ↾ 𝐶)) |
| 3 | df-ima 5676 | . 2 ⊢ (𝐴 “ 𝐶) = ran (𝐴 ↾ 𝐶) | |
| 4 | df-ima 5676 | . 2 ⊢ (𝐵 “ 𝐶) = ran (𝐵 ↾ 𝐶) | |
| 5 | 2, 3, 4 | 3eqtr4g 2825 | 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 5664 ↾ cres 5665 “ cima 5666 |
| 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 2148 ax-9 2156 ax-ext 2737 |
| 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 2744 df-cleq 2757 df-clel 2840 df-rab 3419 df-v 3459 df-dif 3909 df-un 3911 df-in 3913 df-ss 3923 df-nul 4287 df-if 4490 df-sn 4592 df-pr 4594 df-op 4598 df-br 5112 df-opab 5176 df-cnv 5671 df-dm 5673 df-rn 5674 df-res 5675 df-ima 5676 |
| This theorem is used by: imaeq1i 6061 imaeq1d 6063 suppval 8164 naddcllem 8668 eceq2 8742 marypha1lem 9400 marypha1 9401 ackbij2lem2 10238 ackbij2lem3 10239 r1om 10242 limsupval 15549 isacs1i 17735 mreacs 17736 islindf 22012 iscnp 23444 xkoccn 23827 xkohaus 23861 xkoco1cn 23865 xkoco2cn 23866 xkococnlem 23867 xkococn 23868 xkoinjcn 23895 fmval 24151 fmf 24153 utoptop 24442 restutop 24445 restutopopn 24446 ustuqtoplem 24447 ustuqtop1 24449 ustuqtop2 24450 ustuqtop4 24452 ustuqtop5 24453 utopsnneiplem 24455 utopsnnei 24457 neipcfilu 24503 psmetutop 24775 cfilfval 25474 elply2 26404 coeeu 26433 coelem 26434 coeeq 26435 dmarea 27173 negsval 28269 mclsax 36098 tailfval 36940 bj-cleq 37655 bj-funun 37953 poimirlem15 38343 poimirlem24 38352 brtrclfv2 44511 liminfval 46531 ushggricedg 48750 uhgrimisgrgric 48754 |
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