Theorem dalemqnet 40022

Description: Lemma for dath 40106. 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
dalemqnet	⊢ (𝜑 → 𝑄 ≠ 𝑇)

Proof of Theorem dalemqnet

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 39994	. . 3 ⊢ (𝜑 → 𝐾 ∈ Lat)
3		dalemc.a	. . . 4 ⊢ 𝐴 = (Atoms‘𝐾)
4	1, 3	dalemceb 40008	. . 3 ⊢ (𝜑 → 𝐶 ∈ (Base‘𝐾))
5	1, 3	dalemteb 40013	. . 3 ⊢ (𝜑 → 𝑇 ∈ (Base‘𝐾))
6	1, 3	dalemueb 40014	. . 3 ⊢ (𝜑 → 𝑈 ∈ (Base‘𝐾))
7		simp322 1326	. . . 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 ≤ (𝑇 ∨ 𝑈))
8	1, 7	sylbi 217	. . 3 ⊢ (𝜑 → ¬ 𝐶 ≤ (𝑇 ∨ 𝑈))
9		eqid 2737	. . . 4 ⊢ (Base‘𝐾) = (Base‘𝐾)
10		dalemc.l	. . . 4 ⊢ ≤ = (le‘𝐾)
11		dalemc.j	. . . 4 ⊢ ∨ = (join‘𝐾)
12	9, 10, 11	latnlej2l 18395	. . 3 ⊢ ((𝐾 ∈ Lat ∧ (𝐶 ∈ (Base‘𝐾) ∧ 𝑇 ∈ (Base‘𝐾) ∧ 𝑈 ∈ (Base‘𝐾)) ∧ ¬ 𝐶 ≤ (𝑇 ∨ 𝑈)) → ¬ 𝐶 ≤ 𝑇)
13	2, 4, 5, 6, 8, 12	syl131anc 1386	. 2 ⊢ (𝜑 → ¬ 𝐶 ≤ 𝑇)
14	1	dalemclqjt 40005	. . . . 5 ⊢ (𝜑 → 𝐶 ≤ (𝑄 ∨ 𝑇))
15		oveq1 7375	. . . . . 6 ⊢ (𝑄 = 𝑇 → (𝑄 ∨ 𝑇) = (𝑇 ∨ 𝑇))
16	15	breq2d 5112	. . . . 5 ⊢ (𝑄 = 𝑇 → (𝐶 ≤ (𝑄 ∨ 𝑇) ↔ 𝐶 ≤ (𝑇 ∨ 𝑇)))
17	14, 16	syl5ibcom 245	. . . 4 ⊢ (𝜑 → (𝑄 = 𝑇 → 𝐶 ≤ (𝑇 ∨ 𝑇)))
18	1	dalemkehl 39993	. . . . . 6 ⊢ (𝜑 → 𝐾 ∈ HL)
19	1	dalemtea 40000	. . . . . 6 ⊢ (𝜑 → 𝑇 ∈ 𝐴)
20	11, 3	hlatjidm 39739	. . . . . 6 ⊢ ((𝐾 ∈ HL ∧ 𝑇 ∈ 𝐴) → (𝑇 ∨ 𝑇) = 𝑇)
21	18, 19, 20	syl2anc 585	. . . . 5 ⊢ (𝜑 → (𝑇 ∨ 𝑇) = 𝑇)
22	21	breq2d 5112	. . . 4 ⊢ (𝜑 → (𝐶 ≤ (𝑇 ∨ 𝑇) ↔ 𝐶 ≤ 𝑇))
23	17, 22	sylibd 239	. . 3 ⊢ (𝜑 → (𝑄 = 𝑇 → 𝐶 ≤ 𝑇))
24	23	necon3bd 2947	. 2 ⊢ (𝜑 → (¬ 𝐶 ≤ 𝑇 → 𝑄 ≠ 𝑇))
25	13, 24	mpd 15	1 ⊢ (𝜑 → 𝑄 ≠ 𝑇)

Syntax hints:  ¬ wn 3   → wi 4   ↔ wb 206   ∧ wa 395   ∧ w3a 1087   = wceq 1542   ∈ wcel 2114   ≠ wne 2933   class class class wbr 5100  ‘cfv 6500  (class class class)co 7368  Basecbs 17148  lecple 17196  joincjn 18246  Latclat 18366  Atomscatm 39633  HLchlt 39720  LPlanesclpl 39862

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-10 2147  ax-11 2163  ax-12 2185  ax-ext 2709  ax-rep 5226  ax-sep 5243  ax-nul 5253  ax-pow 5312  ax-pr 5379  ax-un 7690

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-nf 1786  df-sb 2069  df-mo 2540  df-eu 2570  df-clab 2716  df-cleq 2729  df-clel 2812  df-nfc 2886  df-ne 2934  df-ral 3053  df-rex 3063  df-rmo 3352  df-reu 3353  df-rab 3402  df-v 3444  df-sbc 3743  df-csb 3852  df-dif 3906  df-un 3908  df-in 3910  df-ss 3920  df-nul 4288  df-if 4482  df-pw 4558  df-sn 4583  df-pr 4585  df-op 4589  df-uni 4866  df-iun 4950  df-br 5101  df-opab 5163  df-mpt 5182  df-id 5527  df-xp 5638  df-rel 5639  df-cnv 5640  df-co 5641  df-dm 5642  df-rn 5643  df-res 5644  df-ima 5645  df-iota 6456  df-fun 6502  df-fn 6503  df-f 6504  df-f1 6505  df-fo 6506  df-f1o 6507  df-fv 6508  df-riota 7325  df-ov 7371  df-oprab 7372  df-proset 18229  df-poset 18248  df-lub 18279  df-glb 18280  df-join 18281  df-meet 18282  df-lat 18367  df-ats 39637  df-atl 39668  df-cvlat 39692  df-hlat 39721

This theorem is referenced by:  dalemcea  40030  dalem2  40031  dalemdnee  40036