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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 5932 | . . 3 ⊢ (𝐴 = 𝐵 → (𝐴 ↾ 𝐶) = (𝐵 ↾ 𝐶)) | |
| 2 | 1 | rneqd 5887 | . 2 ⊢ (𝐴 = 𝐵 → ran (𝐴 ↾ 𝐶) = ran (𝐵 ↾ 𝐶)) |
| 3 | df-ima 5637 | . 2 ⊢ (𝐴 “ 𝐶) = ran (𝐴 ↾ 𝐶) | |
| 4 | df-ima 5637 | . 2 ⊢ (𝐵 “ 𝐶) = ran (𝐵 ↾ 𝐶) | |
| 5 | 2, 3, 4 | 3eqtr4g 2796 | 1 ⊢ (𝐴 = 𝐵 → (𝐴 “ 𝐶) = (𝐵 “ 𝐶)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1541 ran crn 5625 ↾ cres 5626 “ cima 5627 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-8 2115 ax-9 2123 ax-ext 2708 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-sb 2068 df-clab 2715 df-cleq 2728 df-clel 2811 df-rab 3400 df-v 3442 df-dif 3904 df-un 3906 df-in 3908 df-ss 3918 df-nul 4286 df-if 4480 df-sn 4581 df-pr 4583 df-op 4587 df-br 5099 df-opab 5161 df-cnv 5632 df-dm 5634 df-rn 5635 df-res 5636 df-ima 5637 |
| This theorem is referenced by: imaeq1i 6016 imaeq1d 6018 suppval 8104 naddcllem 8604 eceq2 8676 marypha1lem 9336 marypha1 9337 ackbij2lem2 10149 ackbij2lem3 10150 r1om 10153 limsupval 15397 isacs1i 17580 mreacs 17581 islindf 21767 iscnp 23181 xkoccn 23563 xkohaus 23597 xkoco1cn 23601 xkoco2cn 23602 xkococnlem 23603 xkococn 23604 xkoinjcn 23631 fmval 23887 fmf 23889 utoptop 24178 restutop 24181 restutopopn 24182 ustuqtoplem 24183 ustuqtop1 24185 ustuqtop2 24186 ustuqtop4 24188 ustuqtop5 24189 utopsnneiplem 24191 utopsnnei 24193 neipcfilu 24239 psmetutop 24511 cfilfval 25220 elply2 26157 coeeu 26186 coelem 26187 coeeq 26188 dmarea 26923 negsval 28021 mclsax 35763 tailfval 36566 bj-cleq 37163 bj-funun 37457 poimirlem15 37836 poimirlem24 37845 brtrclfv2 43968 liminfval 46003 ushggricedg 48173 uhgrimisgrgric 48177 |
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