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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 5930 | . . 3 ⊢ (𝐴 = 𝐵 → (𝐴 ↾ 𝐶) = (𝐵 ↾ 𝐶)) | |
| 2 | 1 | rneqd 5885 | . 2 ⊢ (𝐴 = 𝐵 → ran (𝐴 ↾ 𝐶) = ran (𝐵 ↾ 𝐶)) |
| 3 | df-ima 5635 | . 2 ⊢ (𝐴 “ 𝐶) = ran (𝐴 ↾ 𝐶) | |
| 4 | df-ima 5635 | . 2 ⊢ (𝐵 “ 𝐶) = ran (𝐵 ↾ 𝐶) | |
| 5 | 2, 3, 4 | 3eqtr4g 2794 | 1 ⊢ (𝐴 = 𝐵 → (𝐴 “ 𝐶) = (𝐵 “ 𝐶)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1541 ran crn 5623 ↾ cres 5624 “ cima 5625 |
| 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 2706 |
| 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 2713 df-cleq 2726 df-clel 2809 df-rab 3398 df-v 3440 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-nul 4284 df-if 4478 df-sn 4579 df-pr 4581 df-op 4585 df-br 5097 df-opab 5159 df-cnv 5630 df-dm 5632 df-rn 5633 df-res 5634 df-ima 5635 |
| This theorem is referenced by: imaeq1i 6014 imaeq1d 6016 suppval 8102 naddcllem 8602 eceq2 8674 marypha1lem 9334 marypha1 9335 ackbij2lem2 10147 ackbij2lem3 10148 r1om 10151 limsupval 15395 isacs1i 17578 mreacs 17579 islindf 21765 iscnp 23179 xkoccn 23561 xkohaus 23595 xkoco1cn 23599 xkoco2cn 23600 xkococnlem 23601 xkococn 23602 xkoinjcn 23629 fmval 23885 fmf 23887 utoptop 24176 restutop 24179 restutopopn 24180 ustuqtoplem 24181 ustuqtop1 24183 ustuqtop2 24184 ustuqtop4 24186 ustuqtop5 24187 utopsnneiplem 24189 utopsnnei 24191 neipcfilu 24237 psmetutop 24509 cfilfval 25218 elply2 26155 coeeu 26184 coelem 26185 coeeq 26186 dmarea 26921 negsval 27994 mclsax 35712 tailfval 36515 bj-cleq 37106 bj-funun 37396 poimirlem15 37775 poimirlem24 37784 brtrclfv2 43910 liminfval 45945 ushggricedg 48115 uhgrimisgrgric 48119 |
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