osumcllem4N - Mathbox for Norm Megill

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Theorem osumcllem4N 39432

Description: Lemma for osumclN 39440. (Contributed by NM, 24-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
osumcllem4N	⊢ (((𝐾 ∈ HL ∧ 𝑌 ⊆ 𝐴 ∧ 𝑋 ⊆ ( ⊥ ‘𝑌)) ∧ (𝑟 ∈ 𝑋 ∧ 𝑞 ∈ 𝑌)) → 𝑞 ≠ 𝑟)

**Proof of Theorem osumcllem4N**
Step	Hyp	Ref	Expression
1		n0i 4334	. . 3 ⊢ (𝑟 ∈ (𝑋 ∩ 𝑌) → ¬ (𝑋 ∩ 𝑌) = ∅)
2		incom 4201	. . . . . . 7 ⊢ (𝑋 ∩ 𝑌) = (𝑌 ∩ 𝑋)
3		sslin 4235	. . . . . . . 8 ⊢ (𝑋 ⊆ ( ⊥ ‘𝑌) → (𝑌 ∩ 𝑋) ⊆ (𝑌 ∩ ( ⊥ ‘𝑌)))
4	3	3ad2ant3 1133	. . . . . . 7 ⊢ ((𝐾 ∈ HL ∧ 𝑌 ⊆ 𝐴 ∧ 𝑋 ⊆ ( ⊥ ‘𝑌)) → (𝑌 ∩ 𝑋) ⊆ (𝑌 ∩ ( ⊥ ‘𝑌)))
5	2, 4	eqsstrid 4028	. . . . . 6 ⊢ ((𝐾 ∈ HL ∧ 𝑌 ⊆ 𝐴 ∧ 𝑋 ⊆ ( ⊥ ‘𝑌)) → (𝑋 ∩ 𝑌) ⊆ (𝑌 ∩ ( ⊥ ‘𝑌)))
6		osumcllem.a	. . . . . . . 8 ⊢ 𝐴 = (Atoms‘𝐾)
7		osumcllem.o	. . . . . . . 8 ⊢ ⊥ = (⊥_𝑃‘𝐾)
8	6, 7	pnonsingN 39406	. . . . . . 7 ⊢ ((𝐾 ∈ HL ∧ 𝑌 ⊆ 𝐴) → (𝑌 ∩ ( ⊥ ‘𝑌)) = ∅)
9	8	3adant3 1130	. . . . . 6 ⊢ ((𝐾 ∈ HL ∧ 𝑌 ⊆ 𝐴 ∧ 𝑋 ⊆ ( ⊥ ‘𝑌)) → (𝑌 ∩ ( ⊥ ‘𝑌)) = ∅)
10	5, 9	sseqtrd 4020	. . . . 5 ⊢ ((𝐾 ∈ HL ∧ 𝑌 ⊆ 𝐴 ∧ 𝑋 ⊆ ( ⊥ ‘𝑌)) → (𝑋 ∩ 𝑌) ⊆ ∅)
11		ss0b 4398	. . . . 5 ⊢ ((𝑋 ∩ 𝑌) ⊆ ∅ ↔ (𝑋 ∩ 𝑌) = ∅)
12	10, 11	sylib 217	. . . 4 ⊢ ((𝐾 ∈ HL ∧ 𝑌 ⊆ 𝐴 ∧ 𝑋 ⊆ ( ⊥ ‘𝑌)) → (𝑋 ∩ 𝑌) = ∅)
13	12	adantr 480	. . 3 ⊢ (((𝐾 ∈ HL ∧ 𝑌 ⊆ 𝐴 ∧ 𝑋 ⊆ ( ⊥ ‘𝑌)) ∧ (𝑟 ∈ 𝑋 ∧ 𝑞 ∈ 𝑌)) → (𝑋 ∩ 𝑌) = ∅)
14	1, 13	nsyl3 138	. 2 ⊢ (((𝐾 ∈ HL ∧ 𝑌 ⊆ 𝐴 ∧ 𝑋 ⊆ ( ⊥ ‘𝑌)) ∧ (𝑟 ∈ 𝑋 ∧ 𝑞 ∈ 𝑌)) → ¬ 𝑟 ∈ (𝑋 ∩ 𝑌))
15		simprr 772	. . . . . 6 ⊢ (((𝐾 ∈ HL ∧ 𝑌 ⊆ 𝐴 ∧ 𝑋 ⊆ ( ⊥ ‘𝑌)) ∧ (𝑟 ∈ 𝑋 ∧ 𝑞 ∈ 𝑌)) → 𝑞 ∈ 𝑌)
16		eleq1w 2812	. . . . . 6 ⊢ (𝑞 = 𝑟 → (𝑞 ∈ 𝑌 ↔ 𝑟 ∈ 𝑌))
17	15, 16	syl5ibcom 244	. . . . 5 ⊢ (((𝐾 ∈ HL ∧ 𝑌 ⊆ 𝐴 ∧ 𝑋 ⊆ ( ⊥ ‘𝑌)) ∧ (𝑟 ∈ 𝑋 ∧ 𝑞 ∈ 𝑌)) → (𝑞 = 𝑟 → 𝑟 ∈ 𝑌))
18		simprl 770	. . . . 5 ⊢ (((𝐾 ∈ HL ∧ 𝑌 ⊆ 𝐴 ∧ 𝑋 ⊆ ( ⊥ ‘𝑌)) ∧ (𝑟 ∈ 𝑋 ∧ 𝑞 ∈ 𝑌)) → 𝑟 ∈ 𝑋)
19	17, 18	jctild 525	. . . 4 ⊢ (((𝐾 ∈ HL ∧ 𝑌 ⊆ 𝐴 ∧ 𝑋 ⊆ ( ⊥ ‘𝑌)) ∧ (𝑟 ∈ 𝑋 ∧ 𝑞 ∈ 𝑌)) → (𝑞 = 𝑟 → (𝑟 ∈ 𝑋 ∧ 𝑟 ∈ 𝑌)))
20		elin 3963	. . . 4 ⊢ (𝑟 ∈ (𝑋 ∩ 𝑌) ↔ (𝑟 ∈ 𝑋 ∧ 𝑟 ∈ 𝑌))
21	19, 20	imbitrrdi 251	. . 3 ⊢ (((𝐾 ∈ HL ∧ 𝑌 ⊆ 𝐴 ∧ 𝑋 ⊆ ( ⊥ ‘𝑌)) ∧ (𝑟 ∈ 𝑋 ∧ 𝑞 ∈ 𝑌)) → (𝑞 = 𝑟 → 𝑟 ∈ (𝑋 ∩ 𝑌)))
22	21	necon3bd 2951	. 2 ⊢ (((𝐾 ∈ HL ∧ 𝑌 ⊆ 𝐴 ∧ 𝑋 ⊆ ( ⊥ ‘𝑌)) ∧ (𝑟 ∈ 𝑋 ∧ 𝑞 ∈ 𝑌)) → (¬ 𝑟 ∈ (𝑋 ∩ 𝑌) → 𝑞 ≠ 𝑟))
23	14, 22	mpd 15	1 ⊢ (((𝐾 ∈ HL ∧ 𝑌 ⊆ 𝐴 ∧ 𝑋 ⊆ ( ⊥ ‘𝑌)) ∧ (𝑟 ∈ 𝑋 ∧ 𝑞 ∈ 𝑌)) → 𝑞 ≠ 𝑟)

Colors of variables: wff setvar class

Syntax hints: ¬ wn 3 → wi 4 ∧ wa 395 ∧ w3a 1085 = wceq 1534 ∈ wcel 2099 ≠ wne 2937 ∩ cin 3946 ⊆ wss 3947 ∅c0 4323 {csn 4629 ‘cfv 6548 (class class class)co 7420 lecple 17239 joincjn 18302 Atomscatm 38735 HLchlt 38822 +_𝑃cpadd 39268 ⊥_𝑃cpolN 39375 PSubClcpscN 39407

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 5285 ax-sep 5299 ax-nul 5306 ax-pow 5365 ax-pr 5429 ax-un 7740

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 2938 df-ral 3059 df-rex 3068 df-rmo 3373 df-reu 3374 df-rab 3430 df-v 3473 df-sbc 3777 df-csb 3893 df-dif 3950 df-un 3952 df-in 3954 df-ss 3964 df-nul 4324 df-if 4530 df-pw 4605 df-sn 4630 df-pr 4632 df-op 4636 df-uni 4909 df-iun 4998 df-iin 4999 df-br 5149 df-opab 5211 df-mpt 5232 df-id 5576 df-xp 5684 df-rel 5685 df-cnv 5686 df-co 5687 df-dm 5688 df-rn 5689 df-res 5690 df-ima 5691 df-iota 6500 df-fun 6550 df-fn 6551 df-f 6552 df-f1 6553 df-fo 6554 df-f1o 6555 df-fv 6556 df-riota 7376 df-ov 7423 df-oprab 7424 df-proset 18286 df-poset 18304 df-plt 18321 df-lub 18337 df-glb 18338 df-join 18339 df-meet 18340 df-p0 18416 df-p1 18417 df-lat 18423 df-clat 18490 df-oposet 38648 df-ol 38650 df-oml 38651 df-covers 38738 df-ats 38739 df-atl 38770 df-cvlat 38794 df-hlat 38823 df-pmap 38977 df-polarityN 39376

This theorem is referenced by: osumcllem6N 39434

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