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| Mirrors > Home > MPE Home > Th. List > s3eqd | Structured version Visualization version GIF version | ||
| Description: Equality theorem for a length 3 word. (Contributed by Mario Carneiro, 27-Feb-2016.) |
| Ref | Expression |
|---|---|
| s2eqd.1 | ⊢ (𝜑 → 𝐴 = 𝑁) |
| s2eqd.2 | ⊢ (𝜑 → 𝐵 = 𝑂) |
| s3eqd.3 | ⊢ (𝜑 → 𝐶 = 𝑃) |
| Ref | Expression |
|---|---|
| s3eqd | ⊢ (𝜑 → 〈“𝐴𝐵𝐶”〉 = 〈“𝑁𝑂𝑃”〉) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | s2eqd.1 | . . . 4 ⊢ (𝜑 → 𝐴 = 𝑁) | |
| 2 | s2eqd.2 | . . . 4 ⊢ (𝜑 → 𝐵 = 𝑂) | |
| 3 | 1, 2 | s2eqd 14994 | . . 3 ⊢ (𝜑 → 〈“𝐴𝐵”〉 = 〈“𝑁𝑂”〉) |
| 4 | s3eqd.3 | . . . 4 ⊢ (𝜑 → 𝐶 = 𝑃) | |
| 5 | 4 | s1eqd 14728 | . . 3 ⊢ (𝜑 → 〈“𝐶”〉 = 〈“𝑃”〉) |
| 6 | 3, 5 | oveq12d 7430 | . 2 ⊢ (𝜑 → (〈“𝐴𝐵”〉 ++ 〈“𝐶”〉) = (〈“𝑁𝑂”〉 ++ 〈“𝑃”〉)) |
| 7 | df-s3 14980 | . 2 ⊢ 〈“𝐴𝐵𝐶”〉 = (〈“𝐴𝐵”〉 ++ 〈“𝐶”〉) | |
| 8 | df-s3 14980 | . 2 ⊢ 〈“𝑁𝑂𝑃”〉 = (〈“𝑁𝑂”〉 ++ 〈“𝑃”〉) | |
| 9 | 6, 7, 8 | 3eqtr4g 2821 | 1 ⊢ (𝜑 → 〈“𝐴𝐵𝐶”〉 = 〈“𝑁𝑂𝑃”〉) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 = wceq 1570 (class class class)co 7412 ++ cconcat 14695 〈“cs1 14722 〈“cs2 14972 〈“cs3 14973 |
| 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-ss 3916 df-nul 4280 df-if 4483 df-sn 4585 df-pr 4587 df-op 4591 df-uni 4868 df-br 5104 df-iota 6487 df-fv 6539 df-ov 7415 df-s1 14723 df-s2 14979 df-s3 14980 |
| This theorem is used by: s4eqd 14996 s3eq2 15001 s3rex 15081 s3sndisj 15100 s3iunsndisj 15101 ragcgr 29164 perpneq 29171 isperp2 29172 isperp2d 29173 footexALT 29175 footexlem2 29177 foot 29179 perprag 29184 perpdragALT 29185 colperpexlem1 29188 lmiisolem 29283 hypcgrlem1 29287 hypcgrlem2 29288 trgcopyeu 29295 iscgra 29298 iscgra1 29299 iscgrad 29300 sacgr 29321 isleag 29348 isleagd 29349 elcgrabasi 29357 angmgmaddov1 29370 angmgmaddov2 29371 angmgmaddcl 29373 angmgmval 29376 iseqlg 29394 prlngmid2 29421 |
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