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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 5812 | . . 3 ⊢ (𝐴 = 𝐵 → (𝐴 ↾ 𝐶) = (𝐵 ↾ 𝐶)) | |
2 | 1 | rneqd 5772 | . 2 ⊢ (𝐴 = 𝐵 → ran (𝐴 ↾ 𝐶) = ran (𝐵 ↾ 𝐶)) |
3 | df-ima 5532 | . 2 ⊢ (𝐴 “ 𝐶) = ran (𝐴 ↾ 𝐶) | |
4 | df-ima 5532 | . 2 ⊢ (𝐵 “ 𝐶) = ran (𝐵 ↾ 𝐶) | |
5 | 2, 3, 4 | 3eqtr4g 2858 | 1 ⊢ (𝐴 = 𝐵 → (𝐴 “ 𝐶) = (𝐵 “ 𝐶)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 = wceq 1538 ran crn 5520 ↾ cres 5521 “ cima 5522 |
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 1911 ax-6 1970 ax-7 2015 ax-8 2113 ax-9 2121 ax-10 2142 ax-11 2158 ax-12 2175 ax-ext 2770 |
This theorem depends on definitions: df-bi 210 df-an 400 df-or 845 df-3an 1086 df-tru 1541 df-ex 1782 df-nf 1786 df-sb 2070 df-clab 2777 df-cleq 2791 df-clel 2870 df-nfc 2938 df-rab 3115 df-v 3443 df-un 3886 df-in 3888 df-ss 3898 df-sn 4526 df-pr 4528 df-op 4532 df-br 5031 df-opab 5093 df-cnv 5527 df-dm 5529 df-rn 5530 df-res 5531 df-ima 5532 |
This theorem is referenced by: imaeq1i 5893 imaeq1d 5895 suppval 7815 eceq2 8312 marypha1lem 8881 marypha1 8882 ackbij2lem2 9651 ackbij2lem3 9652 r1om 9655 limsupval 14823 isacs1i 16920 mreacs 16921 islindf 20501 iscnp 21842 xkoccn 22224 xkohaus 22258 xkoco1cn 22262 xkoco2cn 22263 xkococnlem 22264 xkococn 22265 xkoinjcn 22292 fmval 22548 fmf 22550 utoptop 22840 restutop 22843 restutopopn 22844 ustuqtoplem 22845 ustuqtop1 22847 ustuqtop2 22848 ustuqtop4 22850 ustuqtop5 22851 utopsnneiplem 22853 utopsnnei 22855 neipcfilu 22902 psmetutop 23174 cfilfval 23868 elply2 24793 coeeu 24822 coelem 24823 coeeq 24824 dmarea 25543 mclsax 32929 tailfval 33833 bj-cleq 34398 bj-funun 34667 poimirlem15 35072 poimirlem24 35081 brtrclfv2 40428 liminfval 42401 isomgreqve 44343 isomgrsym 44354 isomgrtr 44357 ushrisomgr 44359 |
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