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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 2797 | 1 ⊢ (𝐴 = 𝐵 → (𝐴 “ 𝐶) = (𝐵 “ 𝐶)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1542 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 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-ext 2709 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-sb 2069 df-clab 2716 df-cleq 2729 df-clel 2812 df-rab 3391 df-v 3432 df-dif 3893 df-un 3895 df-in 3897 df-ss 3907 df-nul 4275 df-if 4468 df-sn 4569 df-pr 4571 df-op 4575 df-br 5087 df-opab 5149 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 8105 naddcllem 8605 eceq2 8678 marypha1lem 9339 marypha1 9340 ackbij2lem2 10152 ackbij2lem3 10153 r1om 10156 limsupval 15427 isacs1i 17614 mreacs 17615 islindf 21802 iscnp 23212 xkoccn 23594 xkohaus 23628 xkoco1cn 23632 xkoco2cn 23633 xkococnlem 23634 xkococn 23635 xkoinjcn 23662 fmval 23918 fmf 23920 utoptop 24209 restutop 24212 restutopopn 24213 ustuqtoplem 24214 ustuqtop1 24216 ustuqtop2 24217 ustuqtop4 24219 ustuqtop5 24220 utopsnneiplem 24222 utopsnnei 24224 neipcfilu 24270 psmetutop 24542 cfilfval 25241 elply2 26171 coeeu 26200 coelem 26201 coeeq 26202 dmarea 26934 negsval 28031 mclsax 35767 tailfval 36570 bj-cleq 37285 bj-funun 37582 poimirlem15 37970 poimirlem24 37979 brtrclfv2 44172 liminfval 46205 ushggricedg 48415 uhgrimisgrgric 48419 |
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