pexmidlem7N - Mathbox for Norm Megill

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Theorem pexmidlem7N 39444

Description: Lemma for pexmidN 39437. Contradict pexmidlem6N 39443. (Contributed by NM, 3-Feb-2012.) (New usage is discouraged.)

**Hypotheses**
Ref	Expression
pexmidlem.l	⊢ ≤ = (le‘𝐾)
pexmidlem.j	⊢ ∨ = (join‘𝐾)
pexmidlem.a	⊢ 𝐴 = (Atoms‘𝐾)
pexmidlem.p	⊢ + = (+_𝑃‘𝐾)
pexmidlem.o	⊢ ⊥ = (⊥_𝑃‘𝐾)
pexmidlem.m	⊢ 𝑀 = (𝑋 + {𝑝})

**Assertion**
Ref	Expression
pexmidlem7N	⊢ (((𝐾 ∈ HL ∧ 𝑋 ⊆ 𝐴 ∧ 𝑝 ∈ 𝐴) ∧ (( ⊥ ‘( ⊥ ‘𝑋)) = 𝑋 ∧ 𝑋 ≠ ∅ ∧ ¬ 𝑝 ∈ (𝑋 + ( ⊥ ‘𝑋)))) → 𝑀 ≠ 𝑋)

**Proof of Theorem pexmidlem7N**
Step	Hyp	Ref	Expression
1		simpl1 1189	. . . . 5 ⊢ (((𝐾 ∈ HL ∧ 𝑋 ⊆ 𝐴 ∧ 𝑝 ∈ 𝐴) ∧ (( ⊥ ‘( ⊥ ‘𝑋)) = 𝑋 ∧ 𝑋 ≠ ∅ ∧ ¬ 𝑝 ∈ (𝑋 + ( ⊥ ‘𝑋)))) → 𝐾 ∈ HL)
2		simpl3 1191	. . . . . 6 ⊢ (((𝐾 ∈ HL ∧ 𝑋 ⊆ 𝐴 ∧ 𝑝 ∈ 𝐴) ∧ (( ⊥ ‘( ⊥ ‘𝑋)) = 𝑋 ∧ 𝑋 ≠ ∅ ∧ ¬ 𝑝 ∈ (𝑋 + ( ⊥ ‘𝑋)))) → 𝑝 ∈ 𝐴)
3	2	snssd 4809	. . . . 5 ⊢ (((𝐾 ∈ HL ∧ 𝑋 ⊆ 𝐴 ∧ 𝑝 ∈ 𝐴) ∧ (( ⊥ ‘( ⊥ ‘𝑋)) = 𝑋 ∧ 𝑋 ≠ ∅ ∧ ¬ 𝑝 ∈ (𝑋 + ( ⊥ ‘𝑋)))) → {𝑝} ⊆ 𝐴)
4		simpl2 1190	. . . . 5 ⊢ (((𝐾 ∈ HL ∧ 𝑋 ⊆ 𝐴 ∧ 𝑝 ∈ 𝐴) ∧ (( ⊥ ‘( ⊥ ‘𝑋)) = 𝑋 ∧ 𝑋 ≠ ∅ ∧ ¬ 𝑝 ∈ (𝑋 + ( ⊥ ‘𝑋)))) → 𝑋 ⊆ 𝐴)
5		pexmidlem.a	. . . . . 6 ⊢ 𝐴 = (Atoms‘𝐾)
6		pexmidlem.p	. . . . . 6 ⊢ + = (+_𝑃‘𝐾)
7	5, 6	sspadd2 39284	. . . . 5 ⊢ ((𝐾 ∈ HL ∧ {𝑝} ⊆ 𝐴 ∧ 𝑋 ⊆ 𝐴) → {𝑝} ⊆ (𝑋 + {𝑝}))
8	1, 3, 4, 7	syl3anc 1369	. . . 4 ⊢ (((𝐾 ∈ HL ∧ 𝑋 ⊆ 𝐴 ∧ 𝑝 ∈ 𝐴) ∧ (( ⊥ ‘( ⊥ ‘𝑋)) = 𝑋 ∧ 𝑋 ≠ ∅ ∧ ¬ 𝑝 ∈ (𝑋 + ( ⊥ ‘𝑋)))) → {𝑝} ⊆ (𝑋 + {𝑝}))
9		vex 3474	. . . . 5 ⊢ 𝑝 ∈ V
10	9	snss 4786	. . . 4 ⊢ (𝑝 ∈ (𝑋 + {𝑝}) ↔ {𝑝} ⊆ (𝑋 + {𝑝}))
11	8, 10	sylibr 233	. . 3 ⊢ (((𝐾 ∈ HL ∧ 𝑋 ⊆ 𝐴 ∧ 𝑝 ∈ 𝐴) ∧ (( ⊥ ‘( ⊥ ‘𝑋)) = 𝑋 ∧ 𝑋 ≠ ∅ ∧ ¬ 𝑝 ∈ (𝑋 + ( ⊥ ‘𝑋)))) → 𝑝 ∈ (𝑋 + {𝑝}))
12		pexmidlem.m	. . 3 ⊢ 𝑀 = (𝑋 + {𝑝})
13	11, 12	eleqtrrdi 2840	. 2 ⊢ (((𝐾 ∈ HL ∧ 𝑋 ⊆ 𝐴 ∧ 𝑝 ∈ 𝐴) ∧ (( ⊥ ‘( ⊥ ‘𝑋)) = 𝑋 ∧ 𝑋 ≠ ∅ ∧ ¬ 𝑝 ∈ (𝑋 + ( ⊥ ‘𝑋)))) → 𝑝 ∈ 𝑀)
14		pexmidlem.o	. . . . . 6 ⊢ ⊥ = (⊥_𝑃‘𝐾)
15	5, 14	polssatN 39376	. . . . 5 ⊢ ((𝐾 ∈ HL ∧ 𝑋 ⊆ 𝐴) → ( ⊥ ‘𝑋) ⊆ 𝐴)
16	1, 4, 15	syl2anc 583	. . . 4 ⊢ (((𝐾 ∈ HL ∧ 𝑋 ⊆ 𝐴 ∧ 𝑝 ∈ 𝐴) ∧ (( ⊥ ‘( ⊥ ‘𝑋)) = 𝑋 ∧ 𝑋 ≠ ∅ ∧ ¬ 𝑝 ∈ (𝑋 + ( ⊥ ‘𝑋)))) → ( ⊥ ‘𝑋) ⊆ 𝐴)
17	5, 6	sspadd1 39283	. . . 4 ⊢ ((𝐾 ∈ HL ∧ 𝑋 ⊆ 𝐴 ∧ ( ⊥ ‘𝑋) ⊆ 𝐴) → 𝑋 ⊆ (𝑋 + ( ⊥ ‘𝑋)))
18	1, 4, 16, 17	syl3anc 1369	. . 3 ⊢ (((𝐾 ∈ HL ∧ 𝑋 ⊆ 𝐴 ∧ 𝑝 ∈ 𝐴) ∧ (( ⊥ ‘( ⊥ ‘𝑋)) = 𝑋 ∧ 𝑋 ≠ ∅ ∧ ¬ 𝑝 ∈ (𝑋 + ( ⊥ ‘𝑋)))) → 𝑋 ⊆ (𝑋 + ( ⊥ ‘𝑋)))
19		simpr3 1194	. . 3 ⊢ (((𝐾 ∈ HL ∧ 𝑋 ⊆ 𝐴 ∧ 𝑝 ∈ 𝐴) ∧ (( ⊥ ‘( ⊥ ‘𝑋)) = 𝑋 ∧ 𝑋 ≠ ∅ ∧ ¬ 𝑝 ∈ (𝑋 + ( ⊥ ‘𝑋)))) → ¬ 𝑝 ∈ (𝑋 + ( ⊥ ‘𝑋)))
20	18, 19	ssneldd 3982	. 2 ⊢ (((𝐾 ∈ HL ∧ 𝑋 ⊆ 𝐴 ∧ 𝑝 ∈ 𝐴) ∧ (( ⊥ ‘( ⊥ ‘𝑋)) = 𝑋 ∧ 𝑋 ≠ ∅ ∧ ¬ 𝑝 ∈ (𝑋 + ( ⊥ ‘𝑋)))) → ¬ 𝑝 ∈ 𝑋)
21		nelne1 3035	. 2 ⊢ ((𝑝 ∈ 𝑀 ∧ ¬ 𝑝 ∈ 𝑋) → 𝑀 ≠ 𝑋)
22	13, 20, 21	syl2anc 583	1 ⊢ (((𝐾 ∈ HL ∧ 𝑋 ⊆ 𝐴 ∧ 𝑝 ∈ 𝐴) ∧ (( ⊥ ‘( ⊥ ‘𝑋)) = 𝑋 ∧ 𝑋 ≠ ∅ ∧ ¬ 𝑝 ∈ (𝑋 + ( ⊥ ‘𝑋)))) → 𝑀 ≠ 𝑋)

Colors of variables: wff setvar class

Syntax hints: ¬ wn 3 → wi 4 ∧ wa 395 ∧ w3a 1085 = wceq 1534 ∈ wcel 2099 ≠ wne 2936 ⊆ wss 3945 ∅c0 4319 {csn 4625 ‘cfv 6543 (class class class)co 7415 lecple 17234 joincjn 18297 Atomscatm 38730 HLchlt 38817 +_𝑃cpadd 39263 ⊥_𝑃cpolN 39370

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1790 ax-4 1804 ax-5 1906 ax-6 1964 ax-7 2004 ax-8 2101 ax-9 2109 ax-10 2130 ax-11 2147 ax-12 2167 ax-ext 2699 ax-rep 5280 ax-sep 5294 ax-nul 5301 ax-pow 5360 ax-pr 5424 ax-un 7735

This theorem depends on definitions: df-bi 206 df-an 396 df-or 847 df-3an 1087 df-tru 1537 df-fal 1547 df-ex 1775 df-nf 1779 df-sb 2061 df-mo 2530 df-eu 2559 df-clab 2706 df-cleq 2720 df-clel 2806 df-nfc 2881 df-ne 2937 df-ral 3058 df-rex 3067 df-rmo 3372 df-reu 3373 df-rab 3429 df-v 3472 df-sbc 3776 df-csb 3891 df-dif 3948 df-un 3950 df-in 3952 df-ss 3962 df-nul 4320 df-if 4526 df-pw 4601 df-sn 4626 df-pr 4628 df-op 4632 df-uni 4905 df-iun 4994 df-iin 4995 df-br 5144 df-opab 5206 df-mpt 5227 df-id 5571 df-xp 5679 df-rel 5680 df-cnv 5681 df-co 5682 df-dm 5683 df-rn 5684 df-res 5685 df-ima 5686 df-iota 6495 df-fun 6545 df-fn 6546 df-f 6547 df-f1 6548 df-fo 6549 df-f1o 6550 df-fv 6551 df-riota 7371 df-ov 7418 df-oprab 7419 df-mpo 7420 df-1st 7988 df-2nd 7989 df-proset 18281 df-poset 18299 df-lub 18332 df-glb 18333 df-join 18334 df-meet 18335 df-p1 18412 df-lat 18418 df-clat 18485 df-oposet 38643 df-ol 38645 df-oml 38646 df-ats 38734 df-atl 38765 df-cvlat 38789 df-hlat 38818 df-psubsp 38971 df-pmap 38972 df-padd 39264 df-polarityN 39371

This theorem is referenced by: pexmidlem8N 39445

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