lhpexle2lem - Mathbox for Norm Megill

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Theorem lhpexle2lem 38868

Description: Lemma for lhpexle2 38869. (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 1191	. . . 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 38867	. . . 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 1201	. . . . . 6 ⊢ ((((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐴 ∧ 𝑋 ≤ 𝑊) ∧ (𝑌 ∈ 𝐴 ∧ 𝑌 ≤ 𝑊)) ∧ 𝑋 = 𝑌 ∧ (𝑝 ≤ 𝑊 ∧ 𝑝 ≠ 𝑋)) → 𝑝 ≤ 𝑊)
8		simp3r 1202	. . . . . 6 ⊢ ((((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐴 ∧ 𝑋 ≤ 𝑊) ∧ (𝑌 ∈ 𝐴 ∧ 𝑌 ≤ 𝑊)) ∧ 𝑋 = 𝑌 ∧ (𝑝 ≤ 𝑊 ∧ 𝑝 ≠ 𝑋)) → 𝑝 ≠ 𝑋)
9		simp2 1137	. . . . . . 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 3010	. . . . . 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 1128	. . . . 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 1121	. . . 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 3170	. . 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 1224	. . . 4 ⊢ ((((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐴 ∧ 𝑋 ≤ 𝑊) ∧ (𝑌 ∈ 𝐴 ∧ 𝑌 ≤ 𝑊)) ∧ 𝑋 ≠ 𝑌) → 𝐾 ∈ HL)
16		simpl2l 1226	. . . 4 ⊢ ((((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐴 ∧ 𝑋 ≤ 𝑊) ∧ (𝑌 ∈ 𝐴 ∧ 𝑌 ≤ 𝑊)) ∧ 𝑋 ≠ 𝑌) → 𝑋 ∈ 𝐴)
17		simpl3l 1228	. . . 4 ⊢ ((((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐴 ∧ 𝑋 ≤ 𝑊) ∧ (𝑌 ∈ 𝐴 ∧ 𝑌 ≤ 𝑊)) ∧ 𝑋 ≠ 𝑌) → 𝑌 ∈ 𝐴)
18		simpr 485	. . . 4 ⊢ ((((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐴 ∧ 𝑋 ≤ 𝑊) ∧ (𝑌 ∈ 𝐴 ∧ 𝑌 ≤ 𝑊)) ∧ 𝑋 ≠ 𝑌) → 𝑋 ≠ 𝑌)
19		eqid 2732	. . . . 5 ⊢ (join‘𝐾) = (join‘𝐾)
20	2, 19, 3	hlsupr 38245	. . . 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 1373	. . 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 2732	. . . . . . . 8 ⊢ (Base‘𝐾) = (Base‘𝐾)
23		simpl1l 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)))) → 𝐾 ∈ HL)
24	23	hllatd 38222	. . . . . . . 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 38147	. . . . . . . . 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 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)))) → 𝑋 ∈ 𝐴)
29		simpl3l 1228	. . . . . . . . 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 38225	. . . . . . . . 9 ⊢ ((𝐾 ∈ HL ∧ 𝑋 ∈ 𝐴 ∧ 𝑌 ∈ 𝐴) → (𝑋(join‘𝐾)𝑌) ∈ (Base‘𝐾))
31	23, 28, 29, 30	syl3anc 1371	. . . . . . . 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 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)))) → 𝑊 ∈ 𝐻)
33	22, 4	lhpbase 38857	. . . . . . . . 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 1223	. . . . . . . 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 1227	. . . . . . . . 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 1229	. . . . . . . . 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 38147	. . . . . . . . . . 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 38147	. . . . . . . . . . 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 18399	. . . . . . . . . 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 1372	. . . . . . . . 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 18395	. . . . . . 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 1221	. . . . . . 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 1222	. . . . . . 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 1128	. . . . . 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 438	. . . . 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 418	. . . 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 3168	. . 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 3029	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 396 ∧ w3a 1087 = wceq 1541 ∈ wcel 2106 ≠ wne 2940 ∃wrex 3070 class class class wbr 5147 ‘cfv 6540 (class class class)co 7405 Basecbs 17140 lecple 17200 joincjn 18260 Latclat 18380 Atomscatm 38121 HLchlt 38208 LHypclh 38843

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1913 ax-6 1971 ax-7 2011 ax-8 2108 ax-9 2116 ax-10 2137 ax-11 2154 ax-12 2171 ax-ext 2703 ax-rep 5284 ax-sep 5298 ax-nul 5305 ax-pow 5362 ax-pr 5426 ax-un 7721

This theorem depends on definitions: df-bi 206 df-an 397 df-or 846 df-3an 1089 df-tru 1544 df-fal 1554 df-ex 1782 df-nf 1786 df-sb 2068 df-mo 2534 df-eu 2563 df-clab 2710 df-cleq 2724 df-clel 2810 df-nfc 2885 df-ne 2941 df-ral 3062 df-rex 3071 df-rmo 3376 df-reu 3377 df-rab 3433 df-v 3476 df-sbc 3777 df-csb 3893 df-dif 3950 df-un 3952 df-in 3954 df-ss 3964 df-nul 4322 df-if 4528 df-pw 4603 df-sn 4628 df-pr 4630 df-op 4634 df-uni 4908 df-iun 4998 df-br 5148 df-opab 5210 df-mpt 5231 df-id 5573 df-xp 5681 df-rel 5682 df-cnv 5683 df-co 5684 df-dm 5685 df-rn 5686 df-res 5687 df-ima 5688 df-iota 6492 df-fun 6542 df-fn 6543 df-f 6544 df-f1 6545 df-fo 6546 df-f1o 6547 df-fv 6548 df-riota 7361 df-ov 7408 df-oprab 7409 df-proset 18244 df-poset 18262 df-plt 18279 df-lub 18295 df-glb 18296 df-join 18297 df-meet 18298 df-p0 18374 df-p1 18375 df-lat 18381 df-clat 18448 df-oposet 38034 df-ol 38036 df-oml 38037 df-covers 38124 df-ats 38125 df-atl 38156 df-cvlat 38180 df-hlat 38209 df-lhyp 38847

This theorem is referenced by: lhpexle2 38869

W3C validator