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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 5964 | . . 3 ⊢ (𝐴 = 𝐵 → (𝐴 ↾ 𝐶) = (𝐵 ↾ 𝐶)) | |
| 2 | 1 | rneqd 5920 | . 2 ⊢ (𝐴 = 𝐵 → ran (𝐴 ↾ 𝐶) = ran (𝐵 ↾ 𝐶)) |
| 3 | df-ima 5664 | . 2 ⊢ (𝐴 “ 𝐶) = ran (𝐴 ↾ 𝐶) | |
| 4 | df-ima 5664 | . 2 ⊢ (𝐵 “ 𝐶) = ran (𝐵 ↾ 𝐶) | |
| 5 | 2, 3, 4 | 3eqtr4g 2821 | 1 ⊢ (𝐴 = 𝐵 → (𝐴 “ 𝐶) = (𝐵 “ 𝐶)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 = wceq 1570 ran crn 5652 ↾ cres 5653 “ cima 5654 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2147 ax-9 2155 ax-ext 2733 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-sb 2100 df-clab 2740 df-cleq 2753 df-clel 2836 df-rab 3414 df-v 3453 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-nul 4280 df-if 4483 df-sn 4585 df-pr 4587 df-op 4591 df-br 5104 df-opab 5168 df-cnv 5659 df-dm 5661 df-rn 5662 df-res 5663 df-ima 5664 |
| This theorem is used by: imaeq1i 6049 imaeq1d 6051 suppval 8172 naddcllem 8678 eceq2 8752 marypha1lem 9418 marypha1 9419 ackbij2lem2 10310 ackbij2lem3 10311 hfom 10314 limsupval 15634 isacs1i 17824 mreacs 17825 islindf 22111 iscnp 23548 xkoccn 23931 xkohaus 23965 xkoco1cn 23969 xkoco2cn 23970 xkococnlem 23971 xkococn 23972 xkoinjcn 23999 fmval 24255 fmf 24257 utoptop 24546 restutop 24549 restutopopn 24550 ustuqtoplem 24551 ustuqtop1 24553 ustuqtop2 24554 ustuqtop4 24556 ustuqtop5 24557 utopsnneiplem 24559 utopsnnei 24561 neipcfilu 24607 psmetutop 24879 cfilfval 25578 elply2 26507 coeeu 26537 coelem 26538 coeeq 26539 dmarea 27278 negsval 28404 mclsax 36313 tailfval 37140 bj-cleq 37855 bj-funun 38153 poimirlem15 38533 poimirlem24 38542 brtrclfv2 44712 liminfval 46738 ushggricedg 48994 uhgrimisgrgric 48998 |
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