Theorem cdlemb2 40626

Description: Given two atoms not under the fiducial (reference) co-atom 𝑊, there is a third. Lemma B in [Crawley] p. 112. (Contributed by NM, 30-May-2012.)

Hypotheses

Ref	Expression
cdlemb2.l	⊢ ≤ = (le‘𝐾)
cdlemb2.j	⊢ ∨ = (join‘𝐾)
cdlemb2.a	⊢ 𝐴 = (Atoms‘𝐾)
cdlemb2.h	⊢ 𝐻 = (LHyp‘𝐾)

Assertion

Ref	Expression
cdlemb2	⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ ((𝑃 ∈ 𝐴 ∧ ¬ 𝑃 ≤ 𝑊) ∧ (𝑄 ∈ 𝐴 ∧ ¬ 𝑄 ≤ 𝑊)) ∧ 𝑃 ≠ 𝑄) → ∃𝑟 ∈ 𝐴 (¬ 𝑟 ≤ 𝑊 ∧ ¬ 𝑟 ≤ (𝑃 ∨ 𝑄)))

Distinct variable groups:   𝐴,𝑟   ∨ ,𝑟   𝐾,𝑟   ≤ ,𝑟   𝑃,𝑟   𝑄,𝑟   𝑊,𝑟

Allowed substitution hint:   𝐻(𝑟)

Proof of Theorem cdlemb2

Step	Hyp	Ref	Expression
1		simp1l 1210	. 2 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ ((𝑃 ∈ 𝐴 ∧ ¬ 𝑃 ≤ 𝑊) ∧ (𝑄 ∈ 𝐴 ∧ ¬ 𝑄 ≤ 𝑊)) ∧ 𝑃 ≠ 𝑄) → 𝐾 ∈ HL)
2		simp2ll 1253	. 2 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ ((𝑃 ∈ 𝐴 ∧ ¬ 𝑃 ≤ 𝑊) ∧ (𝑄 ∈ 𝐴 ∧ ¬ 𝑄 ≤ 𝑊)) ∧ 𝑃 ≠ 𝑄) → 𝑃 ∈ 𝐴)
3		simp2rl 1255	. 2 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ ((𝑃 ∈ 𝐴 ∧ ¬ 𝑃 ≤ 𝑊) ∧ (𝑄 ∈ 𝐴 ∧ ¬ 𝑄 ≤ 𝑊)) ∧ 𝑃 ≠ 𝑄) → 𝑄 ∈ 𝐴)
4		simp1r 1211	. . 3 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ ((𝑃 ∈ 𝐴 ∧ ¬ 𝑃 ≤ 𝑊) ∧ (𝑄 ∈ 𝐴 ∧ ¬ 𝑄 ≤ 𝑊)) ∧ 𝑃 ≠ 𝑄) → 𝑊 ∈ 𝐻)
5		eqid 2761	. . . 4 ⊢ (Base‘𝐾) = (Base‘𝐾)
6		cdlemb2.h	. . . 4 ⊢ 𝐻 = (LHyp‘𝐾)
7	5, 6	lhpbase 40583	. . 3 ⊢ (𝑊 ∈ 𝐻 → 𝑊 ∈ (Base‘𝐾))
8	4, 7	syl 17	. 2 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ ((𝑃 ∈ 𝐴 ∧ ¬ 𝑃 ≤ 𝑊) ∧ (𝑄 ∈ 𝐴 ∧ ¬ 𝑄 ≤ 𝑊)) ∧ 𝑃 ≠ 𝑄) → 𝑊 ∈ (Base‘𝐾))
9		simp3 1150	. 2 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ ((𝑃 ∈ 𝐴 ∧ ¬ 𝑃 ≤ 𝑊) ∧ (𝑄 ∈ 𝐴 ∧ ¬ 𝑄 ≤ 𝑊)) ∧ 𝑃 ≠ 𝑄) → 𝑃 ≠ 𝑄)
10		eqid 2761	. . . 4 ⊢ (1.‘𝐾) = (1.‘𝐾)
11		eqid 2761	. . . 4 ⊢ ( ⋖ ‘𝐾) = ( ⋖ ‘𝐾)
12	10, 11, 6	lhp1cvr 40584	. . 3 ⊢ ((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) → 𝑊( ⋖ ‘𝐾)(1.‘𝐾))
13	12	3ad2ant1 1145	. 2 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ ((𝑃 ∈ 𝐴 ∧ ¬ 𝑃 ≤ 𝑊) ∧ (𝑄 ∈ 𝐴 ∧ ¬ 𝑄 ≤ 𝑊)) ∧ 𝑃 ≠ 𝑄) → 𝑊( ⋖ ‘𝐾)(1.‘𝐾))
14		simp2lr 1254	. 2 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ ((𝑃 ∈ 𝐴 ∧ ¬ 𝑃 ≤ 𝑊) ∧ (𝑄 ∈ 𝐴 ∧ ¬ 𝑄 ≤ 𝑊)) ∧ 𝑃 ≠ 𝑄) → ¬ 𝑃 ≤ 𝑊)
15		simp2rr 1256	. 2 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ ((𝑃 ∈ 𝐴 ∧ ¬ 𝑃 ≤ 𝑊) ∧ (𝑄 ∈ 𝐴 ∧ ¬ 𝑄 ≤ 𝑊)) ∧ 𝑃 ≠ 𝑄) → ¬ 𝑄 ≤ 𝑊)
16		cdlemb2.l	. . 3 ⊢ ≤ = (le‘𝐾)
17		cdlemb2.j	. . 3 ⊢ ∨ = (join‘𝐾)
18		cdlemb2.a	. . 3 ⊢ 𝐴 = (Atoms‘𝐾)
19	5, 16, 17, 10, 11, 18	cdlemb 40379	. 2 ⊢ (((𝐾 ∈ HL ∧ 𝑃 ∈ 𝐴 ∧ 𝑄 ∈ 𝐴) ∧ (𝑊 ∈ (Base‘𝐾) ∧ 𝑃 ≠ 𝑄) ∧ (𝑊( ⋖ ‘𝐾)(1.‘𝐾) ∧ ¬ 𝑃 ≤ 𝑊 ∧ ¬ 𝑄 ≤ 𝑊)) → ∃𝑟 ∈ 𝐴 (¬ 𝑟 ≤ 𝑊 ∧ ¬ 𝑟 ≤ (𝑃 ∨ 𝑄)))
20	1, 2, 3, 8, 9, 13, 14, 15, 19	syl323anc 1418	1 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ ((𝑃 ∈ 𝐴 ∧ ¬ 𝑃 ≤ 𝑊) ∧ (𝑄 ∈ 𝐴 ∧ ¬ 𝑄 ≤ 𝑊)) ∧ 𝑃 ≠ 𝑄) → ∃𝑟 ∈ 𝐴 (¬ 𝑟 ≤ 𝑊 ∧ ¬ 𝑟 ≤ (𝑃 ∨ 𝑄)))

Syntax hints:  ¬ wn 3   → wi 4   ∧ wa 399   ∧ w3a 1097   = wceq 1559   ∈ wcel 2141   ≠ wne 2956  ∃wrex 3085   class class class wbr 5097  ‘cfv 6516  (class class class)co 7391  Basecbs 17236  lecple 17284  joincjn 18334  1.cp1 18445   ⋖ ccvr 39847  Atomscatm 39848  HLchlt 39935  LHypclh 40569

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1814  ax-4 1828  ax-5 1929  ax-6 1986  ax-7 2027  ax-8 2143  ax-9 2151  ax-10 2174  ax-11 2190  ax-12 2211  ax-ext 2733  ax-rep 5224  ax-sep 5243  ax-nul 5253  ax-pow 5319  ax-pr 5387  ax-un 7713

This theorem depends on definitions:  df-bi 209  df-an 400  df-or 859  df-3an 1099  df-tru 1562  df-fal 1572  df-ex 1799  df-nf 1803  df-sb 2090  df-mo 2565  df-eu 2595  df-clab 2740  df-cleq 2753  df-clel 2836  df-nfc 2910  df-ne 2957  df-ral 3076  df-rex 3086  df-rmo 3366  df-reu 3367  df-rab 3414  df-v 3455  df-sbc 3743  df-csb 3851  df-dif 3905  df-un 3907  df-in 3909  df-ss 3919  df-nul 4284  df-if 4478  df-pw 4554  df-sn 4580  df-pr 4582  df-op 4586  df-uni 4863  df-iun 4948  df-br 5098  df-opab 5160  df-mpt 5179  df-id 5538  df-xp 5649  df-rel 5650  df-cnv 5651  df-co 5652  df-dm 5653  df-rn 5654  df-res 5655  df-ima 5656  df-iota 6472  df-fun 6518  df-fn 6519  df-f 6520  df-f1 6521  df-fo 6522  df-f1o 6523  df-fv 6524  df-riota 7348  df-ov 7394  df-oprab 7395  df-proset 18317  df-poset 18336  df-plt 18351  df-lub 18367  df-glb 18368  df-join 18369  df-meet 18370  df-p0 18446  df-p1 18447  df-lat 18455  df-clat 18522  df-oposet 39761  df-ol 39763  df-oml 39764  df-covers 39851  df-ats 39852  df-atl 39883  df-cvlat 39907  df-hlat 39936  df-lhyp 40573

This theorem is referenced by:  cdlemd4  40786  cdlemd9  40791  cdleme25a  40938  cdleme25c  40940  cdleme25dN  40941  cdleme26ee  40945  cdlemefs32sn1aw  40999  cdleme43fsv1snlem  41005  cdleme41sn3a  41018  cdleme40m  41052  cdleme40n  41053  cdleme17d3  41081  cdlemeg46gfre  41117  cdleme50trn2  41136  cdlemb3  41191