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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 5940 | . . 3 ⊢ (𝐴 = 𝐵 → (𝐴 ↾ 𝐶) = (𝐵 ↾ 𝐶)) | |
| 2 | 1 | rneqd 5895 | . 2 ⊢ (𝐴 = 𝐵 → ran (𝐴 ↾ 𝐶) = ran (𝐵 ↾ 𝐶)) |
| 3 | df-ima 5645 | . 2 ⊢ (𝐴 “ 𝐶) = ran (𝐴 ↾ 𝐶) | |
| 4 | df-ima 5645 | . 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 5633 ↾ cres 5634 “ cima 5635 |
| 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 3402 df-v 3444 df-dif 3906 df-un 3908 df-in 3910 df-ss 3920 df-nul 4288 df-if 4482 df-sn 4583 df-pr 4585 df-op 4589 df-br 5101 df-opab 5163 df-cnv 5640 df-dm 5642 df-rn 5643 df-res 5644 df-ima 5645 |
| This theorem is referenced by: imaeq1i 6024 imaeq1d 6026 suppval 8114 naddcllem 8614 eceq2 8687 marypha1lem 9348 marypha1 9349 ackbij2lem2 10161 ackbij2lem3 10162 r1om 10165 limsupval 15409 isacs1i 17592 mreacs 17593 islindf 21779 iscnp 23193 xkoccn 23575 xkohaus 23609 xkoco1cn 23613 xkoco2cn 23614 xkococnlem 23615 xkococn 23616 xkoinjcn 23643 fmval 23899 fmf 23901 utoptop 24190 restutop 24193 restutopopn 24194 ustuqtoplem 24195 ustuqtop1 24197 ustuqtop2 24198 ustuqtop4 24200 ustuqtop5 24201 utopsnneiplem 24203 utopsnnei 24205 neipcfilu 24251 psmetutop 24523 cfilfval 25232 elply2 26169 coeeu 26198 coelem 26199 coeeq 26200 dmarea 26935 negsval 28033 mclsax 35785 tailfval 36588 bj-cleq 37210 bj-funun 37507 poimirlem15 37886 poimirlem24 37895 brtrclfv2 44083 liminfval 46117 ushggricedg 48287 uhgrimisgrgric 48291 |
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