osumcllem10N - Mathbox for Norm Megill

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Theorem osumcllem10N 39959

Description: Lemma for osumclN 39961. Contradict osumcllem9N 39958. (Contributed by NM, 25-Mar-2012.) (New usage is discouraged.)

**Hypotheses**
Ref	Expression
osumcllem.l	⊢ ≤ = (le‘𝐾)
osumcllem.j	⊢ ∨ = (join‘𝐾)
osumcllem.a	⊢ 𝐴 = (Atoms‘𝐾)
osumcllem.p	⊢ + = (+_𝑃‘𝐾)
osumcllem.o	⊢ ⊥ = (⊥_𝑃‘𝐾)
osumcllem.c	⊢ 𝐶 = (PSubCl‘𝐾)
osumcllem.m	⊢ 𝑀 = (𝑋 + {𝑝})
osumcllem.u	⊢ 𝑈 = ( ⊥ ‘( ⊥ ‘(𝑋 + 𝑌)))

**Assertion**
Ref	Expression
osumcllem10N	⊢ (((𝐾 ∈ HL ∧ 𝑋 ⊆ 𝐴 ∧ 𝑌 ⊆ 𝐴) ∧ 𝑝 ∈ 𝐴 ∧ ¬ 𝑝 ∈ (𝑋 + 𝑌)) → 𝑀 ≠ 𝑋)

**Proof of Theorem osumcllem10N**
Step	Hyp	Ref	Expression
1		simp11 1204	. . . . 5 ⊢ (((𝐾 ∈ HL ∧ 𝑋 ⊆ 𝐴 ∧ 𝑌 ⊆ 𝐴) ∧ 𝑝 ∈ 𝐴 ∧ ¬ 𝑝 ∈ (𝑋 + 𝑌)) → 𝐾 ∈ HL)
2		simp2 1137	. . . . . 6 ⊢ (((𝐾 ∈ HL ∧ 𝑋 ⊆ 𝐴 ∧ 𝑌 ⊆ 𝐴) ∧ 𝑝 ∈ 𝐴 ∧ ¬ 𝑝 ∈ (𝑋 + 𝑌)) → 𝑝 ∈ 𝐴)
3	2	snssd 4773	. . . . 5 ⊢ (((𝐾 ∈ HL ∧ 𝑋 ⊆ 𝐴 ∧ 𝑌 ⊆ 𝐴) ∧ 𝑝 ∈ 𝐴 ∧ ¬ 𝑝 ∈ (𝑋 + 𝑌)) → {𝑝} ⊆ 𝐴)
4		simp12 1205	. . . . 5 ⊢ (((𝐾 ∈ HL ∧ 𝑋 ⊆ 𝐴 ∧ 𝑌 ⊆ 𝐴) ∧ 𝑝 ∈ 𝐴 ∧ ¬ 𝑝 ∈ (𝑋 + 𝑌)) → 𝑋 ⊆ 𝐴)
5		osumcllem.a	. . . . . 6 ⊢ 𝐴 = (Atoms‘𝐾)
6		osumcllem.p	. . . . . 6 ⊢ + = (+_𝑃‘𝐾)
7	5, 6	sspadd2 39810	. . . . 5 ⊢ ((𝐾 ∈ HL ∧ {𝑝} ⊆ 𝐴 ∧ 𝑋 ⊆ 𝐴) → {𝑝} ⊆ (𝑋 + {𝑝}))
8	1, 3, 4, 7	syl3anc 1373	. . . 4 ⊢ (((𝐾 ∈ HL ∧ 𝑋 ⊆ 𝐴 ∧ 𝑌 ⊆ 𝐴) ∧ 𝑝 ∈ 𝐴 ∧ ¬ 𝑝 ∈ (𝑋 + 𝑌)) → {𝑝} ⊆ (𝑋 + {𝑝}))
9		vex 3451	. . . . 5 ⊢ 𝑝 ∈ V
10	9	snss 4749	. . . 4 ⊢ (𝑝 ∈ (𝑋 + {𝑝}) ↔ {𝑝} ⊆ (𝑋 + {𝑝}))
11	8, 10	sylibr 234	. . 3 ⊢ (((𝐾 ∈ HL ∧ 𝑋 ⊆ 𝐴 ∧ 𝑌 ⊆ 𝐴) ∧ 𝑝 ∈ 𝐴 ∧ ¬ 𝑝 ∈ (𝑋 + 𝑌)) → 𝑝 ∈ (𝑋 + {𝑝}))
12		osumcllem.m	. . 3 ⊢ 𝑀 = (𝑋 + {𝑝})
13	11, 12	eleqtrrdi 2839	. 2 ⊢ (((𝐾 ∈ HL ∧ 𝑋 ⊆ 𝐴 ∧ 𝑌 ⊆ 𝐴) ∧ 𝑝 ∈ 𝐴 ∧ ¬ 𝑝 ∈ (𝑋 + 𝑌)) → 𝑝 ∈ 𝑀)
14	5, 6	sspadd1 39809	. . . 4 ⊢ ((𝐾 ∈ HL ∧ 𝑋 ⊆ 𝐴 ∧ 𝑌 ⊆ 𝐴) → 𝑋 ⊆ (𝑋 + 𝑌))
15	14	3ad2ant1 1133	. . 3 ⊢ (((𝐾 ∈ HL ∧ 𝑋 ⊆ 𝐴 ∧ 𝑌 ⊆ 𝐴) ∧ 𝑝 ∈ 𝐴 ∧ ¬ 𝑝 ∈ (𝑋 + 𝑌)) → 𝑋 ⊆ (𝑋 + 𝑌))
16		simp3 1138	. . 3 ⊢ (((𝐾 ∈ HL ∧ 𝑋 ⊆ 𝐴 ∧ 𝑌 ⊆ 𝐴) ∧ 𝑝 ∈ 𝐴 ∧ ¬ 𝑝 ∈ (𝑋 + 𝑌)) → ¬ 𝑝 ∈ (𝑋 + 𝑌))
17	15, 16	ssneldd 3949	. 2 ⊢ (((𝐾 ∈ HL ∧ 𝑋 ⊆ 𝐴 ∧ 𝑌 ⊆ 𝐴) ∧ 𝑝 ∈ 𝐴 ∧ ¬ 𝑝 ∈ (𝑋 + 𝑌)) → ¬ 𝑝 ∈ 𝑋)
18		nelne1 3022	. 2 ⊢ ((𝑝 ∈ 𝑀 ∧ ¬ 𝑝 ∈ 𝑋) → 𝑀 ≠ 𝑋)
19	13, 17, 18	syl2anc 584	1 ⊢ (((𝐾 ∈ HL ∧ 𝑋 ⊆ 𝐴 ∧ 𝑌 ⊆ 𝐴) ∧ 𝑝 ∈ 𝐴 ∧ ¬ 𝑝 ∈ (𝑋 + 𝑌)) → 𝑀 ≠ 𝑋)

Colors of variables: wff setvar class

Syntax hints: ¬ wn 3 → wi 4 ∧ w3a 1086 = wceq 1540 ∈ wcel 2109 ≠ wne 2925 ⊆ wss 3914 {csn 4589 ‘cfv 6511 (class class class)co 7387 lecple 17227 joincjn 18272 Atomscatm 39256 HLchlt 39343 +_𝑃cpadd 39789 ⊥_𝑃cpolN 39896 PSubClcpscN 39928

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2008 ax-8 2111 ax-9 2119 ax-10 2142 ax-11 2158 ax-12 2178 ax-ext 2701 ax-rep 5234 ax-sep 5251 ax-nul 5261 ax-pow 5320 ax-pr 5387 ax-un 7711

This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2533 df-eu 2562 df-clab 2708 df-cleq 2721 df-clel 2803 df-nfc 2878 df-ne 2926 df-ral 3045 df-rex 3054 df-reu 3355 df-rab 3406 df-v 3449 df-sbc 3754 df-csb 3863 df-dif 3917 df-un 3919 df-in 3921 df-ss 3931 df-nul 4297 df-if 4489 df-pw 4565 df-sn 4590 df-pr 4592 df-op 4596 df-uni 4872 df-iun 4957 df-br 5108 df-opab 5170 df-mpt 5189 df-id 5533 df-xp 5644 df-rel 5645 df-cnv 5646 df-co 5647 df-dm 5648 df-rn 5649 df-res 5650 df-ima 5651 df-iota 6464 df-fun 6513 df-fn 6514 df-f 6515 df-f1 6516 df-fo 6517 df-f1o 6518 df-fv 6519 df-ov 7390 df-oprab 7391 df-mpo 7392 df-1st 7968 df-2nd 7969 df-padd 39790

This theorem is referenced by: osumcllem11N 39960

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