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| Mirrors > Home > MPE Home > Th. List > Mathboxes > cdlemg3a | Structured version Visualization version GIF version | ||
| Description: Part of proof of Lemma G in [Crawley] p. 116, line 19. Show p ∨ q = p ∨ u. TODO: reformat cdleme0cp 41474 to match this, then replace with cdleme0cp 41474. (Contributed by NM, 19-Apr-2013.) |
| Ref | Expression |
|---|---|
| cdlemg3.l | ⊢ ≤ = (le‘𝐾) |
| cdlemg3.j | ⊢ ∨ = (join‘𝐾) |
| cdlemg3.m | ⊢ ∧ = (meet‘𝐾) |
| cdlemg3.a | ⊢ 𝐴 = (Atoms‘𝐾) |
| cdlemg3.h | ⊢ 𝐻 = (LHyp‘𝐾) |
| cdlemg3.u | ⊢ 𝑈 = ((𝑃 ∨ 𝑄) ∧ 𝑊) |
| Ref | Expression |
|---|---|
| cdlemg3a | ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑃 ∈ 𝐴 ∧ ¬ 𝑃 ≤ 𝑊) ∧ 𝑄 ∈ 𝐴) → (𝑃 ∨ 𝑄) = (𝑃 ∨ 𝑈)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | cdlemg3.l | . . 3 ⊢ ≤ = (le‘𝐾) | |
| 2 | cdlemg3.j | . . 3 ⊢ ∨ = (join‘𝐾) | |
| 3 | cdlemg3.m | . . 3 ⊢ ∧ = (meet‘𝐾) | |
| 4 | cdlemg3.a | . . 3 ⊢ 𝐴 = (Atoms‘𝐾) | |
| 5 | cdlemg3.h | . . 3 ⊢ 𝐻 = (LHyp‘𝐾) | |
| 6 | cdlemg3.u | . . 3 ⊢ 𝑈 = ((𝑃 ∨ 𝑄) ∧ 𝑊) | |
| 7 | 1, 2, 3, 4, 5, 6 | cdleme8 41510 | . 2 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑃 ∈ 𝐴 ∧ ¬ 𝑃 ≤ 𝑊) ∧ 𝑄 ∈ 𝐴) → (𝑃 ∨ 𝑈) = (𝑃 ∨ 𝑄)) |
| 8 | 7 | eqcomd 2769 | 1 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑃 ∈ 𝐴 ∧ ¬ 𝑃 ≤ 𝑊) ∧ 𝑄 ∈ 𝐴) → (𝑃 ∨ 𝑄) = (𝑃 ∨ 𝑈)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ¬ wn 3 → wi 4 ∧ wa 401 ∧ w3a 1103 = wceq 1570 ∈ wcel 2147 class class class wbr 5106 ‘cfv 6561 (class class class)co 7446 lecple 17467 joincjn 18517 meetcmee 18518 Atomscatm 40523 HLchlt 40610 LHypclh 41244 |
| 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 1945 ax-6 2002 ax-7 2043 ax-8 2149 ax-9 2157 ax-10 2180 ax-11 2197 ax-12 2216 ax-ext 2735 ax-rep 5236 ax-sep 5253 ax-nul 5264 ax-pow 5332 ax-pr 5396 ax-un 7778 |
| 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-nf 1817 df-sb 2102 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2839 df-nfc 2913 df-ne 2960 df-ral 3081 df-rex 3091 df-rmo 3369 df-reu 3370 df-rab 3417 df-v 3456 df-sbc 3743 df-csb 3852 df-ss 3901 df-dif 4050 df-in 4094 df-un 4154 df-nul 4282 df-if 4486 df-pw 4562 df-sn 4589 df-pr 4591 df-op 4839 df-uni 4871 df-iun 4956 df-iin 4957 df-br 5107 df-opab 5172 df-mpt 5191 df-id 5551 df-xp 5662 df-rel 5663 df-cnv 5664 df-co 5665 df-dm 5666 df-rn 5667 df-res 5668 df-ima 5669 df-iota 6515 df-fun 6563 df-fn 6564 df-f 6565 df-f1 6566 df-fo 6567 df-f1o 6568 df-fv 6569 df-riota 7403 df-ov 7449 df-oprab 7450 df-mpo 7451 df-1st 8028 df-2nd 8029 df-proset 18500 df-poset 18519 df-plt 18534 df-lub 18550 df-glb 18551 df-join 18552 df-meet 18553 df-p0 18629 df-p1 18630 df-lat 18638 df-clat 18705 df-oposet 40436 df-ol 40438 df-oml 40439 df-covers 40526 df-ats 40527 df-atl 40558 df-cvlat 40582 df-hlat 40611 df-psubsp 40763 df-pmap 40764 df-padd 41056 df-lhyp 41248 |
| This theorem is used by: cdlemg9a 41892 cdlemg9b 41893 cdlemg12b 41904 |
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