Theorem dalempnes 36268

Description: Lemma for dath 36353. Frequently-used utility lemma. (Contributed by NM, 13-Aug-2012.)

Hypotheses

Ref	Expression
dalema.ph	⊢ (𝜑 ↔ (((𝐾 ∈ HL ∧ 𝐶 ∈ (Base‘𝐾)) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑅 ∈ 𝐴) ∧ (𝑆 ∈ 𝐴 ∧ 𝑇 ∈ 𝐴 ∧ 𝑈 ∈ 𝐴)) ∧ (𝑌 ∈ 𝑂 ∧ 𝑍 ∈ 𝑂) ∧ ((¬ 𝐶 ≤ (𝑃 ∨ 𝑄) ∧ ¬ 𝐶 ≤ (𝑄 ∨ 𝑅) ∧ ¬ 𝐶 ≤ (𝑅 ∨ 𝑃)) ∧ (¬ 𝐶 ≤ (𝑆 ∨ 𝑇) ∧ ¬ 𝐶 ≤ (𝑇 ∨ 𝑈) ∧ ¬ 𝐶 ≤ (𝑈 ∨ 𝑆)) ∧ (𝐶 ≤ (𝑃 ∨ 𝑆) ∧ 𝐶 ≤ (𝑄 ∨ 𝑇) ∧ 𝐶 ≤ (𝑅 ∨ 𝑈)))))
dalemc.l	⊢ ≤ = (le‘𝐾)
dalemc.j	⊢ ∨ = (join‘𝐾)
dalemc.a	⊢ 𝐴 = (Atoms‘𝐾)
dalempnes.o	⊢ 𝑂 = (LPlanes‘𝐾)
dalempnes.y	⊢ 𝑌 = ((𝑃 ∨ 𝑄) ∨ 𝑅)

Assertion

Ref	Expression
dalempnes	⊢ (𝜑 → 𝑃 ≠ 𝑆)

Proof of Theorem dalempnes

Step	Hyp	Ref	Expression
1		dalema.ph	. . . 4 ⊢ (𝜑 ↔ (((𝐾 ∈ HL ∧ 𝐶 ∈ (Base‘𝐾)) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑅 ∈ 𝐴) ∧ (𝑆 ∈ 𝐴 ∧ 𝑇 ∈ 𝐴 ∧ 𝑈 ∈ 𝐴)) ∧ (𝑌 ∈ 𝑂 ∧ 𝑍 ∈ 𝑂) ∧ ((¬ 𝐶 ≤ (𝑃 ∨ 𝑄) ∧ ¬ 𝐶 ≤ (𝑄 ∨ 𝑅) ∧ ¬ 𝐶 ≤ (𝑅 ∨ 𝑃)) ∧ (¬ 𝐶 ≤ (𝑆 ∨ 𝑇) ∧ ¬ 𝐶 ≤ (𝑇 ∨ 𝑈) ∧ ¬ 𝐶 ≤ (𝑈 ∨ 𝑆)) ∧ (𝐶 ≤ (𝑃 ∨ 𝑆) ∧ 𝐶 ≤ (𝑄 ∨ 𝑇) ∧ 𝐶 ≤ (𝑅 ∨ 𝑈)))))
2	1	dalemkelat 36241	. . 3 ⊢ (𝜑 → 𝐾 ∈ Lat)
3		dalemc.a	. . . 4 ⊢ 𝐴 = (Atoms‘𝐾)
4	1, 3	dalemceb 36255	. . 3 ⊢ (𝜑 → 𝐶 ∈ (Base‘𝐾))
5	1, 3	dalemseb 36259	. . 3 ⊢ (𝜑 → 𝑆 ∈ (Base‘𝐾))
6	1, 3	dalemteb 36260	. . 3 ⊢ (𝜑 → 𝑇 ∈ (Base‘𝐾))
7		simp321 1314	. . . 4 ⊢ ((((𝐾 ∈ HL ∧ 𝐶 ∈ (Base‘𝐾)) ∧ (𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴 ∧ 𝑅 ∈ 𝐴) ∧ (𝑆 ∈ 𝐴 ∧ 𝑇 ∈ 𝐴 ∧ 𝑈 ∈ 𝐴)) ∧ (𝑌 ∈ 𝑂 ∧ 𝑍 ∈ 𝑂) ∧ ((¬ 𝐶 ≤ (𝑃 ∨ 𝑄) ∧ ¬ 𝐶 ≤ (𝑄 ∨ 𝑅) ∧ ¬ 𝐶 ≤ (𝑅 ∨ 𝑃)) ∧ (¬ 𝐶 ≤ (𝑆 ∨ 𝑇) ∧ ¬ 𝐶 ≤ (𝑇 ∨ 𝑈) ∧ ¬ 𝐶 ≤ (𝑈 ∨ 𝑆)) ∧ (𝐶 ≤ (𝑃 ∨ 𝑆) ∧ 𝐶 ≤ (𝑄 ∨ 𝑇) ∧ 𝐶 ≤ (𝑅 ∨ 𝑈)))) → ¬ 𝐶 ≤ (𝑆 ∨ 𝑇))
8	1, 7	sylbi 218	. . 3 ⊢ (𝜑 → ¬ 𝐶 ≤ (𝑆 ∨ 𝑇))
9		eqid 2793	. . . 4 ⊢ (Base‘𝐾) = (Base‘𝐾)
10		dalemc.l	. . . 4 ⊢ ≤ = (le‘𝐾)
11		dalemc.j	. . . 4 ⊢ ∨ = (join‘𝐾)
12	9, 10, 11	latnlej2l 17499	. . 3 ⊢ ((𝐾 ∈ Lat ∧ (𝐶 ∈ (Base‘𝐾) ∧ 𝑆 ∈ (Base‘𝐾) ∧ 𝑇 ∈ (Base‘𝐾)) ∧ ¬ 𝐶 ≤ (𝑆 ∨ 𝑇)) → ¬ 𝐶 ≤ 𝑆)
13	2, 4, 5, 6, 8, 12	syl131anc 1374	. 2 ⊢ (𝜑 → ¬ 𝐶 ≤ 𝑆)
14	1	dalemclpjs 36251	. . . . 5 ⊢ (𝜑 → 𝐶 ≤ (𝑃 ∨ 𝑆))
15		oveq1 7014	. . . . . 6 ⊢ (𝑃 = 𝑆 → (𝑃 ∨ 𝑆) = (𝑆 ∨ 𝑆))
16	15	breq2d 4968	. . . . 5 ⊢ (𝑃 = 𝑆 → (𝐶 ≤ (𝑃 ∨ 𝑆) ↔ 𝐶 ≤ (𝑆 ∨ 𝑆)))
17	14, 16	syl5ibcom 246	. . . 4 ⊢ (𝜑 → (𝑃 = 𝑆 → 𝐶 ≤ (𝑆 ∨ 𝑆)))
18	1	dalemkehl 36240	. . . . . 6 ⊢ (𝜑 → 𝐾 ∈ HL)
19	1	dalemsea 36246	. . . . . 6 ⊢ (𝜑 → 𝑆 ∈ 𝐴)
20	11, 3	hlatjidm 35986	. . . . . 6 ⊢ ((𝐾 ∈ HL ∧ 𝑆 ∈ 𝐴) → (𝑆 ∨ 𝑆) = 𝑆)
21	18, 19, 20	syl2anc 584	. . . . 5 ⊢ (𝜑 → (𝑆 ∨ 𝑆) = 𝑆)
22	21	breq2d 4968	. . . 4 ⊢ (𝜑 → (𝐶 ≤ (𝑆 ∨ 𝑆) ↔ 𝐶 ≤ 𝑆))
23	17, 22	sylibd 240	. . 3 ⊢ (𝜑 → (𝑃 = 𝑆 → 𝐶 ≤ 𝑆))
24	23	necon3bd 2996	. 2 ⊢ (𝜑 → (¬ 𝐶 ≤ 𝑆 → 𝑃 ≠ 𝑆))
25	13, 24	mpd 15	1 ⊢ (𝜑 → 𝑃 ≠ 𝑆)

Syntax hints:  ¬ wn 3   → wi 4   ↔ wb 207   ∧ wa 396   ∧ w3a 1078   = wceq 1520   ∈ wcel 2079   ≠ wne 2982   class class class wbr 4956  ‘cfv 6217  (class class class)co 7007  Basecbs 16300  lecple 16389  joincjn 17371  Latclat 17472  Atomscatm 35880  HLchlt 35967  LPlanesclpl 36109

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1775  ax-4 1789  ax-5 1886  ax-6 1945  ax-7 1990  ax-8 2081  ax-9 2089  ax-10 2110  ax-11 2124  ax-12 2139  ax-13 2342  ax-ext 2767  ax-rep 5075  ax-sep 5088  ax-nul 5095  ax-pow 5150  ax-pr 5214  ax-un 7310

This theorem depends on definitions:  df-bi 208  df-an 397  df-or 843  df-3an 1080  df-tru 1523  df-ex 1760  df-nf 1764  df-sb 2041  df-mo 2574  df-eu 2610  df-clab 2774  df-cleq 2786  df-clel 2861  df-nfc 2933  df-ne 2983  df-ral 3108  df-rex 3109  df-reu 3110  df-rab 3112  df-v 3434  df-sbc 3702  df-csb 3807  df-dif 3857  df-un 3859  df-in 3861  df-ss 3869  df-nul 4207  df-if 4376  df-pw 4449  df-sn 4467  df-pr 4469  df-op 4473  df-uni 4740  df-iun 4821  df-br 4957  df-opab 5019  df-mpt 5036  df-id 5340  df-xp 5441  df-rel 5442  df-cnv 5443  df-co 5444  df-dm 5445  df-rn 5446  df-res 5447  df-ima 5448  df-iota 6181  df-fun 6219  df-fn 6220  df-f 6221  df-f1 6222  df-fo 6223  df-f1o 6224  df-fv 6225  df-riota 6968  df-ov 7010  df-oprab 7011  df-proset 17355  df-poset 17373  df-lub 17401  df-glb 17402  df-join 17403  df-meet 17404  df-lat 17473  df-ats 35884  df-atl 35915  df-cvlat 35939  df-hlat 35968

This theorem is referenced by:  dalempjsen  36270  dalem24  36314