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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 5925 | . . 3 ⊢ (𝐴 = 𝐵 → (𝐴 ↾ 𝐶) = (𝐵 ↾ 𝐶)) | |
| 2 | 1 | rneqd 5880 | . 2 ⊢ (𝐴 = 𝐵 → ran (𝐴 ↾ 𝐶) = ran (𝐵 ↾ 𝐶)) |
| 3 | df-ima 5631 | . 2 ⊢ (𝐴 “ 𝐶) = ran (𝐴 ↾ 𝐶) | |
| 4 | df-ima 5631 | . 2 ⊢ (𝐵 “ 𝐶) = ran (𝐵 ↾ 𝐶) | |
| 5 | 2, 3, 4 | 3eqtr4g 2799 | 1 ⊢ (𝐴 = 𝐵 → (𝐴 “ 𝐶) = (𝐵 “ 𝐶)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1547 ran crn 5619 ↾ cres 5620 “ cima 5621 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1802 ax-4 1816 ax-5 1917 ax-6 1974 ax-7 2015 ax-8 2121 ax-9 2129 ax-ext 2711 |
| This theorem depends on definitions: df-bi 208 df-an 397 df-or 854 df-3an 1094 df-tru 1550 df-fal 1560 df-ex 1787 df-sb 2074 df-clab 2718 df-cleq 2731 df-clel 2814 df-rab 3392 df-v 3433 df-dif 3886 df-un 3888 df-in 3890 df-ss 3900 df-nul 4262 df-if 4455 df-sn 4556 df-pr 4558 df-op 4562 df-br 5073 df-opab 5135 df-cnv 5626 df-dm 5628 df-rn 5629 df-res 5630 df-ima 5631 |
| This theorem is referenced by: imaeq1i 6009 imaeq1d 6011 suppval 8102 naddcllem 8602 eceq2 8675 marypha1lem 9336 marypha1 9337 ackbij2lem2 10152 ackbij2lem3 10153 r1om 10156 limsupval 15427 isacs1i 17614 mreacs 17615 islindf 21787 iscnp 23220 xkoccn 23602 xkohaus 23636 xkoco1cn 23640 xkoco2cn 23641 xkococnlem 23642 xkococn 23643 xkoinjcn 23670 fmval 23926 fmf 23928 utoptop 24217 restutop 24220 restutopopn 24221 ustuqtoplem 24222 ustuqtop1 24224 ustuqtop2 24225 ustuqtop4 24227 ustuqtop5 24228 utopsnneiplem 24230 utopsnnei 24232 neipcfilu 24278 psmetutop 24550 cfilfval 25249 elply2 26179 coeeu 26208 coelem 26209 coeeq 26210 dmarea 26939 negsval 28035 mclsax 35797 tailfval 36600 bj-cleq 37315 bj-funun 37612 poimirlem15 38002 poimirlem24 38011 brtrclfv2 44171 liminfval 46202 ushggricedg 48418 uhgrimisgrgric 48422 |
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