lhpexle2lem - Mathbox for Norm Megill

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Theorem lhpexle2lem 39486

Description: Lemma for lhpexle2 39487. (Contributed by NM, 19-Jun-2013.)

**Hypotheses**
Ref	Expression
lhpex1.l	⊢ ≤ = (le‘𝐾)
lhpex1.a	⊢ 𝐴 = (Atoms‘𝐾)
lhpex1.h	⊢ 𝐻 = (LHyp‘𝐾)

**Assertion**
Ref	Expression
lhpexle2lem	⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐴 ∧ 𝑋 ≤ 𝑊) ∧ (𝑌 ∈ 𝐴 ∧ 𝑌 ≤ 𝑊)) → ∃𝑝 ∈ 𝐴 (𝑝 ≤ 𝑊 ∧ 𝑝 ≠ 𝑋 ∧ 𝑝 ≠ 𝑌))

Distinct variable groups: ≤ ,𝑝 𝐴,𝑝 𝐻,𝑝 𝐾,𝑝 𝑊,𝑝 𝑋,𝑝 𝑌,𝑝

**Proof of Theorem lhpexle2lem**
Step	Hyp	Ref	Expression
1		simpl1 1188	. . . 4 ⊢ ((((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐴 ∧ 𝑋 ≤ 𝑊) ∧ (𝑌 ∈ 𝐴 ∧ 𝑌 ≤ 𝑊)) ∧ 𝑋 = 𝑌) → (𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻))
2		lhpex1.l	. . . . 5 ⊢ ≤ = (le‘𝐾)
3		lhpex1.a	. . . . 5 ⊢ 𝐴 = (Atoms‘𝐾)
4		lhpex1.h	. . . . 5 ⊢ 𝐻 = (LHyp‘𝐾)
5	2, 3, 4	lhpexle1 39485	. . . 4 ⊢ ((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) → ∃𝑝 ∈ 𝐴 (𝑝 ≤ 𝑊 ∧ 𝑝 ≠ 𝑋))
6	1, 5	syl 17	. . 3 ⊢ ((((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐴 ∧ 𝑋 ≤ 𝑊) ∧ (𝑌 ∈ 𝐴 ∧ 𝑌 ≤ 𝑊)) ∧ 𝑋 = 𝑌) → ∃𝑝 ∈ 𝐴 (𝑝 ≤ 𝑊 ∧ 𝑝 ≠ 𝑋))
7		simp3l 1198	. . . . . 6 ⊢ ((((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐴 ∧ 𝑋 ≤ 𝑊) ∧ (𝑌 ∈ 𝐴 ∧ 𝑌 ≤ 𝑊)) ∧ 𝑋 = 𝑌 ∧ (𝑝 ≤ 𝑊 ∧ 𝑝 ≠ 𝑋)) → 𝑝 ≤ 𝑊)
8		simp3r 1199	. . . . . 6 ⊢ ((((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐴 ∧ 𝑋 ≤ 𝑊) ∧ (𝑌 ∈ 𝐴 ∧ 𝑌 ≤ 𝑊)) ∧ 𝑋 = 𝑌 ∧ (𝑝 ≤ 𝑊 ∧ 𝑝 ≠ 𝑋)) → 𝑝 ≠ 𝑋)
9		simp2 1134	. . . . . . 7 ⊢ ((((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐴 ∧ 𝑋 ≤ 𝑊) ∧ (𝑌 ∈ 𝐴 ∧ 𝑌 ≤ 𝑊)) ∧ 𝑋 = 𝑌 ∧ (𝑝 ≤ 𝑊 ∧ 𝑝 ≠ 𝑋)) → 𝑋 = 𝑌)
10	8, 9	neeqtrd 3006	. . . . . 6 ⊢ ((((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐴 ∧ 𝑋 ≤ 𝑊) ∧ (𝑌 ∈ 𝐴 ∧ 𝑌 ≤ 𝑊)) ∧ 𝑋 = 𝑌 ∧ (𝑝 ≤ 𝑊 ∧ 𝑝 ≠ 𝑋)) → 𝑝 ≠ 𝑌)
11	7, 8, 10	3jca 1125	. . . . 5 ⊢ ((((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐴 ∧ 𝑋 ≤ 𝑊) ∧ (𝑌 ∈ 𝐴 ∧ 𝑌 ≤ 𝑊)) ∧ 𝑋 = 𝑌 ∧ (𝑝 ≤ 𝑊 ∧ 𝑝 ≠ 𝑋)) → (𝑝 ≤ 𝑊 ∧ 𝑝 ≠ 𝑋 ∧ 𝑝 ≠ 𝑌))
12	11	3expia 1118	. . . 4 ⊢ ((((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐴 ∧ 𝑋 ≤ 𝑊) ∧ (𝑌 ∈ 𝐴 ∧ 𝑌 ≤ 𝑊)) ∧ 𝑋 = 𝑌) → ((𝑝 ≤ 𝑊 ∧ 𝑝 ≠ 𝑋) → (𝑝 ≤ 𝑊 ∧ 𝑝 ≠ 𝑋 ∧ 𝑝 ≠ 𝑌)))
13	12	reximdv 3166	. . 3 ⊢ ((((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐴 ∧ 𝑋 ≤ 𝑊) ∧ (𝑌 ∈ 𝐴 ∧ 𝑌 ≤ 𝑊)) ∧ 𝑋 = 𝑌) → (∃𝑝 ∈ 𝐴 (𝑝 ≤ 𝑊 ∧ 𝑝 ≠ 𝑋) → ∃𝑝 ∈ 𝐴 (𝑝 ≤ 𝑊 ∧ 𝑝 ≠ 𝑋 ∧ 𝑝 ≠ 𝑌)))
14	6, 13	mpd 15	. 2 ⊢ ((((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐴 ∧ 𝑋 ≤ 𝑊) ∧ (𝑌 ∈ 𝐴 ∧ 𝑌 ≤ 𝑊)) ∧ 𝑋 = 𝑌) → ∃𝑝 ∈ 𝐴 (𝑝 ≤ 𝑊 ∧ 𝑝 ≠ 𝑋 ∧ 𝑝 ≠ 𝑌))
15		simpl1l 1221	. . . 4 ⊢ ((((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐴 ∧ 𝑋 ≤ 𝑊) ∧ (𝑌 ∈ 𝐴 ∧ 𝑌 ≤ 𝑊)) ∧ 𝑋 ≠ 𝑌) → 𝐾 ∈ HL)
16		simpl2l 1223	. . . 4 ⊢ ((((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐴 ∧ 𝑋 ≤ 𝑊) ∧ (𝑌 ∈ 𝐴 ∧ 𝑌 ≤ 𝑊)) ∧ 𝑋 ≠ 𝑌) → 𝑋 ∈ 𝐴)
17		simpl3l 1225	. . . 4 ⊢ ((((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐴 ∧ 𝑋 ≤ 𝑊) ∧ (𝑌 ∈ 𝐴 ∧ 𝑌 ≤ 𝑊)) ∧ 𝑋 ≠ 𝑌) → 𝑌 ∈ 𝐴)
18		simpr 483	. . . 4 ⊢ ((((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐴 ∧ 𝑋 ≤ 𝑊) ∧ (𝑌 ∈ 𝐴 ∧ 𝑌 ≤ 𝑊)) ∧ 𝑋 ≠ 𝑌) → 𝑋 ≠ 𝑌)
19		eqid 2727	. . . . 5 ⊢ (join‘𝐾) = (join‘𝐾)
20	2, 19, 3	hlsupr 38863	. . . 4 ⊢ (((𝐾 ∈ HL ∧ 𝑋 ∈ 𝐴 ∧ 𝑌 ∈ 𝐴) ∧ 𝑋 ≠ 𝑌) → ∃𝑝 ∈ 𝐴 (𝑝 ≠ 𝑋 ∧ 𝑝 ≠ 𝑌 ∧ 𝑝 ≤ (𝑋(join‘𝐾)𝑌)))
21	15, 16, 17, 18, 20	syl31anc 1370	. . 3 ⊢ ((((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐴 ∧ 𝑋 ≤ 𝑊) ∧ (𝑌 ∈ 𝐴 ∧ 𝑌 ≤ 𝑊)) ∧ 𝑋 ≠ 𝑌) → ∃𝑝 ∈ 𝐴 (𝑝 ≠ 𝑋 ∧ 𝑝 ≠ 𝑌 ∧ 𝑝 ≤ (𝑋(join‘𝐾)𝑌)))
22		eqid 2727	. . . . . . . 8 ⊢ (Base‘𝐾) = (Base‘𝐾)
23		simpl1l 1221	. . . . . . . . 9 ⊢ ((((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐴 ∧ 𝑋 ≤ 𝑊) ∧ (𝑌 ∈ 𝐴 ∧ 𝑌 ≤ 𝑊)) ∧ ((𝑋 ≠ 𝑌 ∧ 𝑝 ∈ 𝐴) ∧ (𝑝 ≠ 𝑋 ∧ 𝑝 ≠ 𝑌 ∧ 𝑝 ≤ (𝑋(join‘𝐾)𝑌)))) → 𝐾 ∈ HL)
24	23	hllatd 38840	. . . . . . . 8 ⊢ ((((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐴 ∧ 𝑋 ≤ 𝑊) ∧ (𝑌 ∈ 𝐴 ∧ 𝑌 ≤ 𝑊)) ∧ ((𝑋 ≠ 𝑌 ∧ 𝑝 ∈ 𝐴) ∧ (𝑝 ≠ 𝑋 ∧ 𝑝 ≠ 𝑌 ∧ 𝑝 ≤ (𝑋(join‘𝐾)𝑌)))) → 𝐾 ∈ Lat)
25		simprlr 778	. . . . . . . . 9 ⊢ ((((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐴 ∧ 𝑋 ≤ 𝑊) ∧ (𝑌 ∈ 𝐴 ∧ 𝑌 ≤ 𝑊)) ∧ ((𝑋 ≠ 𝑌 ∧ 𝑝 ∈ 𝐴) ∧ (𝑝 ≠ 𝑋 ∧ 𝑝 ≠ 𝑌 ∧ 𝑝 ≤ (𝑋(join‘𝐾)𝑌)))) → 𝑝 ∈ 𝐴)
26	22, 3	atbase 38765	. . . . . . . . 9 ⊢ (𝑝 ∈ 𝐴 → 𝑝 ∈ (Base‘𝐾))
27	25, 26	syl 17	. . . . . . . 8 ⊢ ((((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐴 ∧ 𝑋 ≤ 𝑊) ∧ (𝑌 ∈ 𝐴 ∧ 𝑌 ≤ 𝑊)) ∧ ((𝑋 ≠ 𝑌 ∧ 𝑝 ∈ 𝐴) ∧ (𝑝 ≠ 𝑋 ∧ 𝑝 ≠ 𝑌 ∧ 𝑝 ≤ (𝑋(join‘𝐾)𝑌)))) → 𝑝 ∈ (Base‘𝐾))
28		simpl2l 1223	. . . . . . . . 9 ⊢ ((((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐴 ∧ 𝑋 ≤ 𝑊) ∧ (𝑌 ∈ 𝐴 ∧ 𝑌 ≤ 𝑊)) ∧ ((𝑋 ≠ 𝑌 ∧ 𝑝 ∈ 𝐴) ∧ (𝑝 ≠ 𝑋 ∧ 𝑝 ≠ 𝑌 ∧ 𝑝 ≤ (𝑋(join‘𝐾)𝑌)))) → 𝑋 ∈ 𝐴)
29		simpl3l 1225	. . . . . . . . 9 ⊢ ((((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐴 ∧ 𝑋 ≤ 𝑊) ∧ (𝑌 ∈ 𝐴 ∧ 𝑌 ≤ 𝑊)) ∧ ((𝑋 ≠ 𝑌 ∧ 𝑝 ∈ 𝐴) ∧ (𝑝 ≠ 𝑋 ∧ 𝑝 ≠ 𝑌 ∧ 𝑝 ≤ (𝑋(join‘𝐾)𝑌)))) → 𝑌 ∈ 𝐴)
30	22, 19, 3	hlatjcl 38843	. . . . . . . . 9 ⊢ ((𝐾 ∈ HL ∧ 𝑋 ∈ 𝐴 ∧ 𝑌 ∈ 𝐴) → (𝑋(join‘𝐾)𝑌) ∈ (Base‘𝐾))
31	23, 28, 29, 30	syl3anc 1368	. . . . . . . 8 ⊢ ((((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐴 ∧ 𝑋 ≤ 𝑊) ∧ (𝑌 ∈ 𝐴 ∧ 𝑌 ≤ 𝑊)) ∧ ((𝑋 ≠ 𝑌 ∧ 𝑝 ∈ 𝐴) ∧ (𝑝 ≠ 𝑋 ∧ 𝑝 ≠ 𝑌 ∧ 𝑝 ≤ (𝑋(join‘𝐾)𝑌)))) → (𝑋(join‘𝐾)𝑌) ∈ (Base‘𝐾))
32		simpl1r 1222	. . . . . . . . 9 ⊢ ((((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐴 ∧ 𝑋 ≤ 𝑊) ∧ (𝑌 ∈ 𝐴 ∧ 𝑌 ≤ 𝑊)) ∧ ((𝑋 ≠ 𝑌 ∧ 𝑝 ∈ 𝐴) ∧ (𝑝 ≠ 𝑋 ∧ 𝑝 ≠ 𝑌 ∧ 𝑝 ≤ (𝑋(join‘𝐾)𝑌)))) → 𝑊 ∈ 𝐻)
33	22, 4	lhpbase 39475	. . . . . . . . 9 ⊢ (𝑊 ∈ 𝐻 → 𝑊 ∈ (Base‘𝐾))
34	32, 33	syl 17	. . . . . . . 8 ⊢ ((((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐴 ∧ 𝑋 ≤ 𝑊) ∧ (𝑌 ∈ 𝐴 ∧ 𝑌 ≤ 𝑊)) ∧ ((𝑋 ≠ 𝑌 ∧ 𝑝 ∈ 𝐴) ∧ (𝑝 ≠ 𝑋 ∧ 𝑝 ≠ 𝑌 ∧ 𝑝 ≤ (𝑋(join‘𝐾)𝑌)))) → 𝑊 ∈ (Base‘𝐾))
35		simprr3 1220	. . . . . . . 8 ⊢ ((((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐴 ∧ 𝑋 ≤ 𝑊) ∧ (𝑌 ∈ 𝐴 ∧ 𝑌 ≤ 𝑊)) ∧ ((𝑋 ≠ 𝑌 ∧ 𝑝 ∈ 𝐴) ∧ (𝑝 ≠ 𝑋 ∧ 𝑝 ≠ 𝑌 ∧ 𝑝 ≤ (𝑋(join‘𝐾)𝑌)))) → 𝑝 ≤ (𝑋(join‘𝐾)𝑌))
36		simpl2r 1224	. . . . . . . . 9 ⊢ ((((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐴 ∧ 𝑋 ≤ 𝑊) ∧ (𝑌 ∈ 𝐴 ∧ 𝑌 ≤ 𝑊)) ∧ ((𝑋 ≠ 𝑌 ∧ 𝑝 ∈ 𝐴) ∧ (𝑝 ≠ 𝑋 ∧ 𝑝 ≠ 𝑌 ∧ 𝑝 ≤ (𝑋(join‘𝐾)𝑌)))) → 𝑋 ≤ 𝑊)
37		simpl3r 1226	. . . . . . . . 9 ⊢ ((((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐴 ∧ 𝑋 ≤ 𝑊) ∧ (𝑌 ∈ 𝐴 ∧ 𝑌 ≤ 𝑊)) ∧ ((𝑋 ≠ 𝑌 ∧ 𝑝 ∈ 𝐴) ∧ (𝑝 ≠ 𝑋 ∧ 𝑝 ≠ 𝑌 ∧ 𝑝 ≤ (𝑋(join‘𝐾)𝑌)))) → 𝑌 ≤ 𝑊)
38	22, 3	atbase 38765	. . . . . . . . . . 11 ⊢ (𝑋 ∈ 𝐴 → 𝑋 ∈ (Base‘𝐾))
39	28, 38	syl 17	. . . . . . . . . 10 ⊢ ((((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐴 ∧ 𝑋 ≤ 𝑊) ∧ (𝑌 ∈ 𝐴 ∧ 𝑌 ≤ 𝑊)) ∧ ((𝑋 ≠ 𝑌 ∧ 𝑝 ∈ 𝐴) ∧ (𝑝 ≠ 𝑋 ∧ 𝑝 ≠ 𝑌 ∧ 𝑝 ≤ (𝑋(join‘𝐾)𝑌)))) → 𝑋 ∈ (Base‘𝐾))
40	22, 3	atbase 38765	. . . . . . . . . . 11 ⊢ (𝑌 ∈ 𝐴 → 𝑌 ∈ (Base‘𝐾))
41	29, 40	syl 17	. . . . . . . . . 10 ⊢ ((((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐴 ∧ 𝑋 ≤ 𝑊) ∧ (𝑌 ∈ 𝐴 ∧ 𝑌 ≤ 𝑊)) ∧ ((𝑋 ≠ 𝑌 ∧ 𝑝 ∈ 𝐴) ∧ (𝑝 ≠ 𝑋 ∧ 𝑝 ≠ 𝑌 ∧ 𝑝 ≤ (𝑋(join‘𝐾)𝑌)))) → 𝑌 ∈ (Base‘𝐾))
42	22, 2, 19	latjle12 18447	. . . . . . . . . 10 ⊢ ((𝐾 ∈ Lat ∧ (𝑋 ∈ (Base‘𝐾) ∧ 𝑌 ∈ (Base‘𝐾) ∧ 𝑊 ∈ (Base‘𝐾))) → ((𝑋 ≤ 𝑊 ∧ 𝑌 ≤ 𝑊) ↔ (𝑋(join‘𝐾)𝑌) ≤ 𝑊))
43	24, 39, 41, 34, 42	syl13anc 1369	. . . . . . . . 9 ⊢ ((((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐴 ∧ 𝑋 ≤ 𝑊) ∧ (𝑌 ∈ 𝐴 ∧ 𝑌 ≤ 𝑊)) ∧ ((𝑋 ≠ 𝑌 ∧ 𝑝 ∈ 𝐴) ∧ (𝑝 ≠ 𝑋 ∧ 𝑝 ≠ 𝑌 ∧ 𝑝 ≤ (𝑋(join‘𝐾)𝑌)))) → ((𝑋 ≤ 𝑊 ∧ 𝑌 ≤ 𝑊) ↔ (𝑋(join‘𝐾)𝑌) ≤ 𝑊))
44	36, 37, 43	mpbi2and 710	. . . . . . . 8 ⊢ ((((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐴 ∧ 𝑋 ≤ 𝑊) ∧ (𝑌 ∈ 𝐴 ∧ 𝑌 ≤ 𝑊)) ∧ ((𝑋 ≠ 𝑌 ∧ 𝑝 ∈ 𝐴) ∧ (𝑝 ≠ 𝑋 ∧ 𝑝 ≠ 𝑌 ∧ 𝑝 ≤ (𝑋(join‘𝐾)𝑌)))) → (𝑋(join‘𝐾)𝑌) ≤ 𝑊)
45	22, 2, 24, 27, 31, 34, 35, 44	lattrd 18443	. . . . . . 7 ⊢ ((((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐴 ∧ 𝑋 ≤ 𝑊) ∧ (𝑌 ∈ 𝐴 ∧ 𝑌 ≤ 𝑊)) ∧ ((𝑋 ≠ 𝑌 ∧ 𝑝 ∈ 𝐴) ∧ (𝑝 ≠ 𝑋 ∧ 𝑝 ≠ 𝑌 ∧ 𝑝 ≤ (𝑋(join‘𝐾)𝑌)))) → 𝑝 ≤ 𝑊)
46		simprr1 1218	. . . . . . 7 ⊢ ((((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐴 ∧ 𝑋 ≤ 𝑊) ∧ (𝑌 ∈ 𝐴 ∧ 𝑌 ≤ 𝑊)) ∧ ((𝑋 ≠ 𝑌 ∧ 𝑝 ∈ 𝐴) ∧ (𝑝 ≠ 𝑋 ∧ 𝑝 ≠ 𝑌 ∧ 𝑝 ≤ (𝑋(join‘𝐾)𝑌)))) → 𝑝 ≠ 𝑋)
47		simprr2 1219	. . . . . . 7 ⊢ ((((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐴 ∧ 𝑋 ≤ 𝑊) ∧ (𝑌 ∈ 𝐴 ∧ 𝑌 ≤ 𝑊)) ∧ ((𝑋 ≠ 𝑌 ∧ 𝑝 ∈ 𝐴) ∧ (𝑝 ≠ 𝑋 ∧ 𝑝 ≠ 𝑌 ∧ 𝑝 ≤ (𝑋(join‘𝐾)𝑌)))) → 𝑝 ≠ 𝑌)
48	45, 46, 47	3jca 1125	. . . . . 6 ⊢ ((((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐴 ∧ 𝑋 ≤ 𝑊) ∧ (𝑌 ∈ 𝐴 ∧ 𝑌 ≤ 𝑊)) ∧ ((𝑋 ≠ 𝑌 ∧ 𝑝 ∈ 𝐴) ∧ (𝑝 ≠ 𝑋 ∧ 𝑝 ≠ 𝑌 ∧ 𝑝 ≤ (𝑋(join‘𝐾)𝑌)))) → (𝑝 ≤ 𝑊 ∧ 𝑝 ≠ 𝑋 ∧ 𝑝 ≠ 𝑌))
49	48	exp44 436	. . . . 5 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐴 ∧ 𝑋 ≤ 𝑊) ∧ (𝑌 ∈ 𝐴 ∧ 𝑌 ≤ 𝑊)) → (𝑋 ≠ 𝑌 → (𝑝 ∈ 𝐴 → ((𝑝 ≠ 𝑋 ∧ 𝑝 ≠ 𝑌 ∧ 𝑝 ≤ (𝑋(join‘𝐾)𝑌)) → (𝑝 ≤ 𝑊 ∧ 𝑝 ≠ 𝑋 ∧ 𝑝 ≠ 𝑌)))))
50	49	imp31 416	. . . 4 ⊢ (((((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐴 ∧ 𝑋 ≤ 𝑊) ∧ (𝑌 ∈ 𝐴 ∧ 𝑌 ≤ 𝑊)) ∧ 𝑋 ≠ 𝑌) ∧ 𝑝 ∈ 𝐴) → ((𝑝 ≠ 𝑋 ∧ 𝑝 ≠ 𝑌 ∧ 𝑝 ≤ (𝑋(join‘𝐾)𝑌)) → (𝑝 ≤ 𝑊 ∧ 𝑝 ≠ 𝑋 ∧ 𝑝 ≠ 𝑌)))
51	50	reximdva 3164	. . 3 ⊢ ((((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐴 ∧ 𝑋 ≤ 𝑊) ∧ (𝑌 ∈ 𝐴 ∧ 𝑌 ≤ 𝑊)) ∧ 𝑋 ≠ 𝑌) → (∃𝑝 ∈ 𝐴 (𝑝 ≠ 𝑋 ∧ 𝑝 ≠ 𝑌 ∧ 𝑝 ≤ (𝑋(join‘𝐾)𝑌)) → ∃𝑝 ∈ 𝐴 (𝑝 ≤ 𝑊 ∧ 𝑝 ≠ 𝑋 ∧ 𝑝 ≠ 𝑌)))
52	21, 51	mpd 15	. 2 ⊢ ((((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐴 ∧ 𝑋 ≤ 𝑊) ∧ (𝑌 ∈ 𝐴 ∧ 𝑌 ≤ 𝑊)) ∧ 𝑋 ≠ 𝑌) → ∃𝑝 ∈ 𝐴 (𝑝 ≤ 𝑊 ∧ 𝑝 ≠ 𝑋 ∧ 𝑝 ≠ 𝑌))
53	14, 52	pm2.61dane 3025	1 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐴 ∧ 𝑋 ≤ 𝑊) ∧ (𝑌 ∈ 𝐴 ∧ 𝑌 ≤ 𝑊)) → ∃𝑝 ∈ 𝐴 (𝑝 ≤ 𝑊 ∧ 𝑝 ≠ 𝑋 ∧ 𝑝 ≠ 𝑌))

Colors of variables: wff setvar class

Syntax hints: → wi 4 ↔ wb 205 ∧ wa 394 ∧ w3a 1084 = wceq 1533 ∈ wcel 2098 ≠ wne 2936 ∃wrex 3066 class class class wbr 5150 ‘cfv 6551 (class class class)co 7424 Basecbs 17185 lecple 17245 joincjn 18308 Latclat 18428 Atomscatm 38739 HLchlt 38826 LHypclh 39461

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1789 ax-4 1803 ax-5 1905 ax-6 1963 ax-7 2003 ax-8 2100 ax-9 2108 ax-10 2129 ax-11 2146 ax-12 2166 ax-ext 2698 ax-rep 5287 ax-sep 5301 ax-nul 5308 ax-pow 5367 ax-pr 5431 ax-un 7744

This theorem depends on definitions: df-bi 206 df-an 395 df-or 846 df-3an 1086 df-tru 1536 df-fal 1546 df-ex 1774 df-nf 1778 df-sb 2060 df-mo 2529 df-eu 2558 df-clab 2705 df-cleq 2719 df-clel 2805 df-nfc 2880 df-ne 2937 df-ral 3058 df-rex 3067 df-rmo 3372 df-reu 3373 df-rab 3429 df-v 3473 df-sbc 3777 df-csb 3893 df-dif 3950 df-un 3952 df-in 3954 df-ss 3964 df-nul 4325 df-if 4531 df-pw 4606 df-sn 4631 df-pr 4633 df-op 4637 df-uni 4911 df-iun 5000 df-br 5151 df-opab 5213 df-mpt 5234 df-id 5578 df-xp 5686 df-rel 5687 df-cnv 5688 df-co 5689 df-dm 5690 df-rn 5691 df-res 5692 df-ima 5693 df-iota 6503 df-fun 6553 df-fn 6554 df-f 6555 df-f1 6556 df-fo 6557 df-f1o 6558 df-fv 6559 df-riota 7380 df-ov 7427 df-oprab 7428 df-proset 18292 df-poset 18310 df-plt 18327 df-lub 18343 df-glb 18344 df-join 18345 df-meet 18346 df-p0 18422 df-p1 18423 df-lat 18429 df-clat 18496 df-oposet 38652 df-ol 38654 df-oml 38655 df-covers 38742 df-ats 38743 df-atl 38774 df-cvlat 38798 df-hlat 38827 df-lhyp 39465

This theorem is referenced by: lhpexle2 39487

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