Theorem 2lplnj 39729

Description: The join of two different lattice planes in a (3-dimensional) lattice volume equals the volume. (Contributed by NM, 12-Jul-2012.)

Hypotheses

Ref	Expression
2lplnj.l	⊢ ≤ = (le‘𝐾)
2lplnj.j	⊢ ∨ = (join‘𝐾)
2lplnj.p	⊢ 𝑃 = (LPlanes‘𝐾)
2lplnj.v	⊢ 𝑉 = (LVols‘𝐾)

Assertion

Ref	Expression
2lplnj	⊢ ((𝐾 ∈ HL ∧ (𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃 ∧ 𝑊 ∈ 𝑉) ∧ (𝑋 ≤ 𝑊 ∧ 𝑌 ≤ 𝑊 ∧ 𝑋 ≠ 𝑌)) → (𝑋 ∨ 𝑌) = 𝑊)

Proof of Theorem 2lplnj

Dummy variables 𝑟 𝑞 𝑠 𝑡 𝑢 𝑣 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		eqid 2731	. . . . . . . 8 ⊢ (Base‘𝐾) = (Base‘𝐾)
2		2lplnj.l	. . . . . . . 8 ⊢ ≤ = (le‘𝐾)
3		2lplnj.j	. . . . . . . 8 ⊢ ∨ = (join‘𝐾)
4		eqid 2731	. . . . . . . 8 ⊢ (Atoms‘𝐾) = (Atoms‘𝐾)
5		2lplnj.p	. . . . . . . 8 ⊢ 𝑃 = (LPlanes‘𝐾)
6	1, 2, 3, 4, 5	islpln2 39645	. . . . . . 7 ⊢ (𝐾 ∈ HL → (𝑋 ∈ 𝑃 ↔ (𝑋 ∈ (Base‘𝐾) ∧ ∃𝑞 ∈ (Atoms‘𝐾)∃𝑟 ∈ (Atoms‘𝐾)∃𝑠 ∈ (Atoms‘𝐾)(𝑞 ≠ 𝑟 ∧ ¬ 𝑠 ≤ (𝑞 ∨ 𝑟) ∧ 𝑋 = ((𝑞 ∨ 𝑟) ∨ 𝑠)))))
7		simpr 484	. . . . . . 7 ⊢ ((𝑋 ∈ (Base‘𝐾) ∧ ∃𝑞 ∈ (Atoms‘𝐾)∃𝑟 ∈ (Atoms‘𝐾)∃𝑠 ∈ (Atoms‘𝐾)(𝑞 ≠ 𝑟 ∧ ¬ 𝑠 ≤ (𝑞 ∨ 𝑟) ∧ 𝑋 = ((𝑞 ∨ 𝑟) ∨ 𝑠))) → ∃𝑞 ∈ (Atoms‘𝐾)∃𝑟 ∈ (Atoms‘𝐾)∃𝑠 ∈ (Atoms‘𝐾)(𝑞 ≠ 𝑟 ∧ ¬ 𝑠 ≤ (𝑞 ∨ 𝑟) ∧ 𝑋 = ((𝑞 ∨ 𝑟) ∨ 𝑠)))
8	6, 7	biimtrdi 253	. . . . . 6 ⊢ (𝐾 ∈ HL → (𝑋 ∈ 𝑃 → ∃𝑞 ∈ (Atoms‘𝐾)∃𝑟 ∈ (Atoms‘𝐾)∃𝑠 ∈ (Atoms‘𝐾)(𝑞 ≠ 𝑟 ∧ ¬ 𝑠 ≤ (𝑞 ∨ 𝑟) ∧ 𝑋 = ((𝑞 ∨ 𝑟) ∨ 𝑠))))
9	1, 2, 3, 4, 5	islpln2 39645	. . . . . . 7 ⊢ (𝐾 ∈ HL → (𝑌 ∈ 𝑃 ↔ (𝑌 ∈ (Base‘𝐾) ∧ ∃𝑡 ∈ (Atoms‘𝐾)∃𝑢 ∈ (Atoms‘𝐾)∃𝑣 ∈ (Atoms‘𝐾)(𝑡 ≠ 𝑢 ∧ ¬ 𝑣 ≤ (𝑡 ∨ 𝑢) ∧ 𝑌 = ((𝑡 ∨ 𝑢) ∨ 𝑣)))))
10		simpr 484	. . . . . . 7 ⊢ ((𝑌 ∈ (Base‘𝐾) ∧ ∃𝑡 ∈ (Atoms‘𝐾)∃𝑢 ∈ (Atoms‘𝐾)∃𝑣 ∈ (Atoms‘𝐾)(𝑡 ≠ 𝑢 ∧ ¬ 𝑣 ≤ (𝑡 ∨ 𝑢) ∧ 𝑌 = ((𝑡 ∨ 𝑢) ∨ 𝑣))) → ∃𝑡 ∈ (Atoms‘𝐾)∃𝑢 ∈ (Atoms‘𝐾)∃𝑣 ∈ (Atoms‘𝐾)(𝑡 ≠ 𝑢 ∧ ¬ 𝑣 ≤ (𝑡 ∨ 𝑢) ∧ 𝑌 = ((𝑡 ∨ 𝑢) ∨ 𝑣)))
11	9, 10	biimtrdi 253	. . . . . 6 ⊢ (𝐾 ∈ HL → (𝑌 ∈ 𝑃 → ∃𝑡 ∈ (Atoms‘𝐾)∃𝑢 ∈ (Atoms‘𝐾)∃𝑣 ∈ (Atoms‘𝐾)(𝑡 ≠ 𝑢 ∧ ¬ 𝑣 ≤ (𝑡 ∨ 𝑢) ∧ 𝑌 = ((𝑡 ∨ 𝑢) ∨ 𝑣))))
12	8, 11	anim12d 609	. . . . 5 ⊢ (𝐾 ∈ HL → ((𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃) → (∃𝑞 ∈ (Atoms‘𝐾)∃𝑟 ∈ (Atoms‘𝐾)∃𝑠 ∈ (Atoms‘𝐾)(𝑞 ≠ 𝑟 ∧ ¬ 𝑠 ≤ (𝑞 ∨ 𝑟) ∧ 𝑋 = ((𝑞 ∨ 𝑟) ∨ 𝑠)) ∧ ∃𝑡 ∈ (Atoms‘𝐾)∃𝑢 ∈ (Atoms‘𝐾)∃𝑣 ∈ (Atoms‘𝐾)(𝑡 ≠ 𝑢 ∧ ¬ 𝑣 ≤ (𝑡 ∨ 𝑢) ∧ 𝑌 = ((𝑡 ∨ 𝑢) ∨ 𝑣)))))
13	12	imp 406	. . . 4 ⊢ ((𝐾 ∈ HL ∧ (𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃)) → (∃𝑞 ∈ (Atoms‘𝐾)∃𝑟 ∈ (Atoms‘𝐾)∃𝑠 ∈ (Atoms‘𝐾)(𝑞 ≠ 𝑟 ∧ ¬ 𝑠 ≤ (𝑞 ∨ 𝑟) ∧ 𝑋 = ((𝑞 ∨ 𝑟) ∨ 𝑠)) ∧ ∃𝑡 ∈ (Atoms‘𝐾)∃𝑢 ∈ (Atoms‘𝐾)∃𝑣 ∈ (Atoms‘𝐾)(𝑡 ≠ 𝑢 ∧ ¬ 𝑣 ≤ (𝑡 ∨ 𝑢) ∧ 𝑌 = ((𝑡 ∨ 𝑢) ∨ 𝑣))))
14	13	3adantr3 1172	. . 3 ⊢ ((𝐾 ∈ HL ∧ (𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃 ∧ 𝑊 ∈ 𝑉)) → (∃𝑞 ∈ (Atoms‘𝐾)∃𝑟 ∈ (Atoms‘𝐾)∃𝑠 ∈ (Atoms‘𝐾)(𝑞 ≠ 𝑟 ∧ ¬ 𝑠 ≤ (𝑞 ∨ 𝑟) ∧ 𝑋 = ((𝑞 ∨ 𝑟) ∨ 𝑠)) ∧ ∃𝑡 ∈ (Atoms‘𝐾)∃𝑢 ∈ (Atoms‘𝐾)∃𝑣 ∈ (Atoms‘𝐾)(𝑡 ≠ 𝑢 ∧ ¬ 𝑣 ≤ (𝑡 ∨ 𝑢) ∧ 𝑌 = ((𝑡 ∨ 𝑢) ∨ 𝑣))))
15	14	3adant3 1132	. 2 ⊢ ((𝐾 ∈ HL ∧ (𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃 ∧ 𝑊 ∈ 𝑉) ∧ (𝑋 ≤ 𝑊 ∧ 𝑌 ≤ 𝑊 ∧ 𝑋 ≠ 𝑌)) → (∃𝑞 ∈ (Atoms‘𝐾)∃𝑟 ∈ (Atoms‘𝐾)∃𝑠 ∈ (Atoms‘𝐾)(𝑞 ≠ 𝑟 ∧ ¬ 𝑠 ≤ (𝑞 ∨ 𝑟) ∧ 𝑋 = ((𝑞 ∨ 𝑟) ∨ 𝑠)) ∧ ∃𝑡 ∈ (Atoms‘𝐾)∃𝑢 ∈ (Atoms‘𝐾)∃𝑣 ∈ (Atoms‘𝐾)(𝑡 ≠ 𝑢 ∧ ¬ 𝑣 ≤ (𝑡 ∨ 𝑢) ∧ 𝑌 = ((𝑡 ∨ 𝑢) ∨ 𝑣))))
16		simpl33 1257	. . . . . . . . . . . . 13 ⊢ ((((𝐾 ∈ HL ∧ (𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃 ∧ 𝑊 ∈ 𝑉) ∧ (𝑋 ≤ 𝑊 ∧ 𝑌 ≤ 𝑊 ∧ 𝑋 ≠ 𝑌)) ∧ (𝑞 ∈ (Atoms‘𝐾) ∧ (𝑟 ∈ (Atoms‘𝐾) ∧ 𝑠 ∈ (Atoms‘𝐾))) ∧ (𝑞 ≠ 𝑟 ∧ ¬ 𝑠 ≤ (𝑞 ∨ 𝑟) ∧ 𝑋 = ((𝑞 ∨ 𝑟) ∨ 𝑠))) ∧ 𝑡 ∈ (Atoms‘𝐾)) → 𝑋 = ((𝑞 ∨ 𝑟) ∨ 𝑠))
17	16	3ad2ant1 1133	. . . . . . . . . . . 12 ⊢ (((((𝐾 ∈ HL ∧ (𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃 ∧ 𝑊 ∈ 𝑉) ∧ (𝑋 ≤ 𝑊 ∧ 𝑌 ≤ 𝑊 ∧ 𝑋 ≠ 𝑌)) ∧ (𝑞 ∈ (Atoms‘𝐾) ∧ (𝑟 ∈ (Atoms‘𝐾) ∧ 𝑠 ∈ (Atoms‘𝐾))) ∧ (𝑞 ≠ 𝑟 ∧ ¬ 𝑠 ≤ (𝑞 ∨ 𝑟) ∧ 𝑋 = ((𝑞 ∨ 𝑟) ∨ 𝑠))) ∧ 𝑡 ∈ (Atoms‘𝐾)) ∧ (𝑢 ∈ (Atoms‘𝐾) ∧ 𝑣 ∈ (Atoms‘𝐾)) ∧ (𝑡 ≠ 𝑢 ∧ ¬ 𝑣 ≤ (𝑡 ∨ 𝑢) ∧ 𝑌 = ((𝑡 ∨ 𝑢) ∨ 𝑣))) → 𝑋 = ((𝑞 ∨ 𝑟) ∨ 𝑠))
18		simp33 1212	. . . . . . . . . . . 12 ⊢ (((((𝐾 ∈ HL ∧ (𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃 ∧ 𝑊 ∈ 𝑉) ∧ (𝑋 ≤ 𝑊 ∧ 𝑌 ≤ 𝑊 ∧ 𝑋 ≠ 𝑌)) ∧ (𝑞 ∈ (Atoms‘𝐾) ∧ (𝑟 ∈ (Atoms‘𝐾) ∧ 𝑠 ∈ (Atoms‘𝐾))) ∧ (𝑞 ≠ 𝑟 ∧ ¬ 𝑠 ≤ (𝑞 ∨ 𝑟) ∧ 𝑋 = ((𝑞 ∨ 𝑟) ∨ 𝑠))) ∧ 𝑡 ∈ (Atoms‘𝐾)) ∧ (𝑢 ∈ (Atoms‘𝐾) ∧ 𝑣 ∈ (Atoms‘𝐾)) ∧ (𝑡 ≠ 𝑢 ∧ ¬ 𝑣 ≤ (𝑡 ∨ 𝑢) ∧ 𝑌 = ((𝑡 ∨ 𝑢) ∨ 𝑣))) → 𝑌 = ((𝑡 ∨ 𝑢) ∨ 𝑣))
19	17, 18	oveq12d 7364	. . . . . . . . . . 11 ⊢ (((((𝐾 ∈ HL ∧ (𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃 ∧ 𝑊 ∈ 𝑉) ∧ (𝑋 ≤ 𝑊 ∧ 𝑌 ≤ 𝑊 ∧ 𝑋 ≠ 𝑌)) ∧ (𝑞 ∈ (Atoms‘𝐾) ∧ (𝑟 ∈ (Atoms‘𝐾) ∧ 𝑠 ∈ (Atoms‘𝐾))) ∧ (𝑞 ≠ 𝑟 ∧ ¬ 𝑠 ≤ (𝑞 ∨ 𝑟) ∧ 𝑋 = ((𝑞 ∨ 𝑟) ∨ 𝑠))) ∧ 𝑡 ∈ (Atoms‘𝐾)) ∧ (𝑢 ∈ (Atoms‘𝐾) ∧ 𝑣 ∈ (Atoms‘𝐾)) ∧ (𝑡 ≠ 𝑢 ∧ ¬ 𝑣 ≤ (𝑡 ∨ 𝑢) ∧ 𝑌 = ((𝑡 ∨ 𝑢) ∨ 𝑣))) → (𝑋 ∨ 𝑌) = (((𝑞 ∨ 𝑟) ∨ 𝑠) ∨ ((𝑡 ∨ 𝑢) ∨ 𝑣)))
20		simp11 1204	. . . . . . . . . . . . . . 15 ⊢ (((𝐾 ∈ HL ∧ (𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃 ∧ 𝑊 ∈ 𝑉) ∧ (𝑋 ≤ 𝑊 ∧ 𝑌 ≤ 𝑊 ∧ 𝑋 ≠ 𝑌)) ∧ (𝑞 ∈ (Atoms‘𝐾) ∧ (𝑟 ∈ (Atoms‘𝐾) ∧ 𝑠 ∈ (Atoms‘𝐾))) ∧ (𝑞 ≠ 𝑟 ∧ ¬ 𝑠 ≤ (𝑞 ∨ 𝑟) ∧ 𝑋 = ((𝑞 ∨ 𝑟) ∨ 𝑠))) → 𝐾 ∈ HL)
21		simp123 1308	. . . . . . . . . . . . . . 15 ⊢ (((𝐾 ∈ HL ∧ (𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃 ∧ 𝑊 ∈ 𝑉) ∧ (𝑋 ≤ 𝑊 ∧ 𝑌 ≤ 𝑊 ∧ 𝑋 ≠ 𝑌)) ∧ (𝑞 ∈ (Atoms‘𝐾) ∧ (𝑟 ∈ (Atoms‘𝐾) ∧ 𝑠 ∈ (Atoms‘𝐾))) ∧ (𝑞 ≠ 𝑟 ∧ ¬ 𝑠 ≤ (𝑞 ∨ 𝑟) ∧ 𝑋 = ((𝑞 ∨ 𝑟) ∨ 𝑠))) → 𝑊 ∈ 𝑉)
22	20, 21	jca 511	. . . . . . . . . . . . . 14 ⊢ (((𝐾 ∈ HL ∧ (𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃 ∧ 𝑊 ∈ 𝑉) ∧ (𝑋 ≤ 𝑊 ∧ 𝑌 ≤ 𝑊 ∧ 𝑋 ≠ 𝑌)) ∧ (𝑞 ∈ (Atoms‘𝐾) ∧ (𝑟 ∈ (Atoms‘𝐾) ∧ 𝑠 ∈ (Atoms‘𝐾))) ∧ (𝑞 ≠ 𝑟 ∧ ¬ 𝑠 ≤ (𝑞 ∨ 𝑟) ∧ 𝑋 = ((𝑞 ∨ 𝑟) ∨ 𝑠))) → (𝐾 ∈ HL ∧ 𝑊 ∈ 𝑉))
23	22	adantr 480	. . . . . . . . . . . . 13 ⊢ ((((𝐾 ∈ HL ∧ (𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃 ∧ 𝑊 ∈ 𝑉) ∧ (𝑋 ≤ 𝑊 ∧ 𝑌 ≤ 𝑊 ∧ 𝑋 ≠ 𝑌)) ∧ (𝑞 ∈ (Atoms‘𝐾) ∧ (𝑟 ∈ (Atoms‘𝐾) ∧ 𝑠 ∈ (Atoms‘𝐾))) ∧ (𝑞 ≠ 𝑟 ∧ ¬ 𝑠 ≤ (𝑞 ∨ 𝑟) ∧ 𝑋 = ((𝑞 ∨ 𝑟) ∨ 𝑠))) ∧ 𝑡 ∈ (Atoms‘𝐾)) → (𝐾 ∈ HL ∧ 𝑊 ∈ 𝑉))
24	23	3ad2ant1 1133	. . . . . . . . . . . 12 ⊢ (((((𝐾 ∈ HL ∧ (𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃 ∧ 𝑊 ∈ 𝑉) ∧ (𝑋 ≤ 𝑊 ∧ 𝑌 ≤ 𝑊 ∧ 𝑋 ≠ 𝑌)) ∧ (𝑞 ∈ (Atoms‘𝐾) ∧ (𝑟 ∈ (Atoms‘𝐾) ∧ 𝑠 ∈ (Atoms‘𝐾))) ∧ (𝑞 ≠ 𝑟 ∧ ¬ 𝑠 ≤ (𝑞 ∨ 𝑟) ∧ 𝑋 = ((𝑞 ∨ 𝑟) ∨ 𝑠))) ∧ 𝑡 ∈ (Atoms‘𝐾)) ∧ (𝑢 ∈ (Atoms‘𝐾) ∧ 𝑣 ∈ (Atoms‘𝐾)) ∧ (𝑡 ≠ 𝑢 ∧ ¬ 𝑣 ≤ (𝑡 ∨ 𝑢) ∧ 𝑌 = ((𝑡 ∨ 𝑢) ∨ 𝑣))) → (𝐾 ∈ HL ∧ 𝑊 ∈ 𝑉))
25		simp2l 1200	. . . . . . . . . . . . . . 15 ⊢ (((𝐾 ∈ HL ∧ (𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃 ∧ 𝑊 ∈ 𝑉) ∧ (𝑋 ≤ 𝑊 ∧ 𝑌 ≤ 𝑊 ∧ 𝑋 ≠ 𝑌)) ∧ (𝑞 ∈ (Atoms‘𝐾) ∧ (𝑟 ∈ (Atoms‘𝐾) ∧ 𝑠 ∈ (Atoms‘𝐾))) ∧ (𝑞 ≠ 𝑟 ∧ ¬ 𝑠 ≤ (𝑞 ∨ 𝑟) ∧ 𝑋 = ((𝑞 ∨ 𝑟) ∨ 𝑠))) → 𝑞 ∈ (Atoms‘𝐾))
26		simp2rl 1243	. . . . . . . . . . . . . . 15 ⊢ (((𝐾 ∈ HL ∧ (𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃 ∧ 𝑊 ∈ 𝑉) ∧ (𝑋 ≤ 𝑊 ∧ 𝑌 ≤ 𝑊 ∧ 𝑋 ≠ 𝑌)) ∧ (𝑞 ∈ (Atoms‘𝐾) ∧ (𝑟 ∈ (Atoms‘𝐾) ∧ 𝑠 ∈ (Atoms‘𝐾))) ∧ (𝑞 ≠ 𝑟 ∧ ¬ 𝑠 ≤ (𝑞 ∨ 𝑟) ∧ 𝑋 = ((𝑞 ∨ 𝑟) ∨ 𝑠))) → 𝑟 ∈ (Atoms‘𝐾))
27		simp2rr 1244	. . . . . . . . . . . . . . 15 ⊢ (((𝐾 ∈ HL ∧ (𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃 ∧ 𝑊 ∈ 𝑉) ∧ (𝑋 ≤ 𝑊 ∧ 𝑌 ≤ 𝑊 ∧ 𝑋 ≠ 𝑌)) ∧ (𝑞 ∈ (Atoms‘𝐾) ∧ (𝑟 ∈ (Atoms‘𝐾) ∧ 𝑠 ∈ (Atoms‘𝐾))) ∧ (𝑞 ≠ 𝑟 ∧ ¬ 𝑠 ≤ (𝑞 ∨ 𝑟) ∧ 𝑋 = ((𝑞 ∨ 𝑟) ∨ 𝑠))) → 𝑠 ∈ (Atoms‘𝐾))
28	25, 26, 27	3jca 1128	. . . . . . . . . . . . . 14 ⊢ (((𝐾 ∈ HL ∧ (𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃 ∧ 𝑊 ∈ 𝑉) ∧ (𝑋 ≤ 𝑊 ∧ 𝑌 ≤ 𝑊 ∧ 𝑋 ≠ 𝑌)) ∧ (𝑞 ∈ (Atoms‘𝐾) ∧ (𝑟 ∈ (Atoms‘𝐾) ∧ 𝑠 ∈ (Atoms‘𝐾))) ∧ (𝑞 ≠ 𝑟 ∧ ¬ 𝑠 ≤ (𝑞 ∨ 𝑟) ∧ 𝑋 = ((𝑞 ∨ 𝑟) ∨ 𝑠))) → (𝑞 ∈ (Atoms‘𝐾) ∧ 𝑟 ∈ (Atoms‘𝐾) ∧ 𝑠 ∈ (Atoms‘𝐾)))
29	28	adantr 480	. . . . . . . . . . . . 13 ⊢ ((((𝐾 ∈ HL ∧ (𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃 ∧ 𝑊 ∈ 𝑉) ∧ (𝑋 ≤ 𝑊 ∧ 𝑌 ≤ 𝑊 ∧ 𝑋 ≠ 𝑌)) ∧ (𝑞 ∈ (Atoms‘𝐾) ∧ (𝑟 ∈ (Atoms‘𝐾) ∧ 𝑠 ∈ (Atoms‘𝐾))) ∧ (𝑞 ≠ 𝑟 ∧ ¬ 𝑠 ≤ (𝑞 ∨ 𝑟) ∧ 𝑋 = ((𝑞 ∨ 𝑟) ∨ 𝑠))) ∧ 𝑡 ∈ (Atoms‘𝐾)) → (𝑞 ∈ (Atoms‘𝐾) ∧ 𝑟 ∈ (Atoms‘𝐾) ∧ 𝑠 ∈ (Atoms‘𝐾)))
30	29	3ad2ant1 1133	. . . . . . . . . . . 12 ⊢ (((((𝐾 ∈ HL ∧ (𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃 ∧ 𝑊 ∈ 𝑉) ∧ (𝑋 ≤ 𝑊 ∧ 𝑌 ≤ 𝑊 ∧ 𝑋 ≠ 𝑌)) ∧ (𝑞 ∈ (Atoms‘𝐾) ∧ (𝑟 ∈ (Atoms‘𝐾) ∧ 𝑠 ∈ (Atoms‘𝐾))) ∧ (𝑞 ≠ 𝑟 ∧ ¬ 𝑠 ≤ (𝑞 ∨ 𝑟) ∧ 𝑋 = ((𝑞 ∨ 𝑟) ∨ 𝑠))) ∧ 𝑡 ∈ (Atoms‘𝐾)) ∧ (𝑢 ∈ (Atoms‘𝐾) ∧ 𝑣 ∈ (Atoms‘𝐾)) ∧ (𝑡 ≠ 𝑢 ∧ ¬ 𝑣 ≤ (𝑡 ∨ 𝑢) ∧ 𝑌 = ((𝑡 ∨ 𝑢) ∨ 𝑣))) → (𝑞 ∈ (Atoms‘𝐾) ∧ 𝑟 ∈ (Atoms‘𝐾) ∧ 𝑠 ∈ (Atoms‘𝐾)))
31		simpl31 1255	. . . . . . . . . . . . . 14 ⊢ ((((𝐾 ∈ HL ∧ (𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃 ∧ 𝑊 ∈ 𝑉) ∧ (𝑋 ≤ 𝑊 ∧ 𝑌 ≤ 𝑊 ∧ 𝑋 ≠ 𝑌)) ∧ (𝑞 ∈ (Atoms‘𝐾) ∧ (𝑟 ∈ (Atoms‘𝐾) ∧ 𝑠 ∈ (Atoms‘𝐾))) ∧ (𝑞 ≠ 𝑟 ∧ ¬ 𝑠 ≤ (𝑞 ∨ 𝑟) ∧ 𝑋 = ((𝑞 ∨ 𝑟) ∨ 𝑠))) ∧ 𝑡 ∈ (Atoms‘𝐾)) → 𝑞 ≠ 𝑟)
32	31	3ad2ant1 1133	. . . . . . . . . . . . 13 ⊢ (((((𝐾 ∈ HL ∧ (𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃 ∧ 𝑊 ∈ 𝑉) ∧ (𝑋 ≤ 𝑊 ∧ 𝑌 ≤ 𝑊 ∧ 𝑋 ≠ 𝑌)) ∧ (𝑞 ∈ (Atoms‘𝐾) ∧ (𝑟 ∈ (Atoms‘𝐾) ∧ 𝑠 ∈ (Atoms‘𝐾))) ∧ (𝑞 ≠ 𝑟 ∧ ¬ 𝑠 ≤ (𝑞 ∨ 𝑟) ∧ 𝑋 = ((𝑞 ∨ 𝑟) ∨ 𝑠))) ∧ 𝑡 ∈ (Atoms‘𝐾)) ∧ (𝑢 ∈ (Atoms‘𝐾) ∧ 𝑣 ∈ (Atoms‘𝐾)) ∧ (𝑡 ≠ 𝑢 ∧ ¬ 𝑣 ≤ (𝑡 ∨ 𝑢) ∧ 𝑌 = ((𝑡 ∨ 𝑢) ∨ 𝑣))) → 𝑞 ≠ 𝑟)
33		simpl32 1256	. . . . . . . . . . . . . 14 ⊢ ((((𝐾 ∈ HL ∧ (𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃 ∧ 𝑊 ∈ 𝑉) ∧ (𝑋 ≤ 𝑊 ∧ 𝑌 ≤ 𝑊 ∧ 𝑋 ≠ 𝑌)) ∧ (𝑞 ∈ (Atoms‘𝐾) ∧ (𝑟 ∈ (Atoms‘𝐾) ∧ 𝑠 ∈ (Atoms‘𝐾))) ∧ (𝑞 ≠ 𝑟 ∧ ¬ 𝑠 ≤ (𝑞 ∨ 𝑟) ∧ 𝑋 = ((𝑞 ∨ 𝑟) ∨ 𝑠))) ∧ 𝑡 ∈ (Atoms‘𝐾)) → ¬ 𝑠 ≤ (𝑞 ∨ 𝑟))
34	33	3ad2ant1 1133	. . . . . . . . . . . . 13 ⊢ (((((𝐾 ∈ HL ∧ (𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃 ∧ 𝑊 ∈ 𝑉) ∧ (𝑋 ≤ 𝑊 ∧ 𝑌 ≤ 𝑊 ∧ 𝑋 ≠ 𝑌)) ∧ (𝑞 ∈ (Atoms‘𝐾) ∧ (𝑟 ∈ (Atoms‘𝐾) ∧ 𝑠 ∈ (Atoms‘𝐾))) ∧ (𝑞 ≠ 𝑟 ∧ ¬ 𝑠 ≤ (𝑞 ∨ 𝑟) ∧ 𝑋 = ((𝑞 ∨ 𝑟) ∨ 𝑠))) ∧ 𝑡 ∈ (Atoms‘𝐾)) ∧ (𝑢 ∈ (Atoms‘𝐾) ∧ 𝑣 ∈ (Atoms‘𝐾)) ∧ (𝑡 ≠ 𝑢 ∧ ¬ 𝑣 ≤ (𝑡 ∨ 𝑢) ∧ 𝑌 = ((𝑡 ∨ 𝑢) ∨ 𝑣))) → ¬ 𝑠 ≤ (𝑞 ∨ 𝑟))
35	32, 34	jca 511	. . . . . . . . . . . 12 ⊢ (((((𝐾 ∈ HL ∧ (𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃 ∧ 𝑊 ∈ 𝑉) ∧ (𝑋 ≤ 𝑊 ∧ 𝑌 ≤ 𝑊 ∧ 𝑋 ≠ 𝑌)) ∧ (𝑞 ∈ (Atoms‘𝐾) ∧ (𝑟 ∈ (Atoms‘𝐾) ∧ 𝑠 ∈ (Atoms‘𝐾))) ∧ (𝑞 ≠ 𝑟 ∧ ¬ 𝑠 ≤ (𝑞 ∨ 𝑟) ∧ 𝑋 = ((𝑞 ∨ 𝑟) ∨ 𝑠))) ∧ 𝑡 ∈ (Atoms‘𝐾)) ∧ (𝑢 ∈ (Atoms‘𝐾) ∧ 𝑣 ∈ (Atoms‘𝐾)) ∧ (𝑡 ≠ 𝑢 ∧ ¬ 𝑣 ≤ (𝑡 ∨ 𝑢) ∧ 𝑌 = ((𝑡 ∨ 𝑢) ∨ 𝑣))) → (𝑞 ≠ 𝑟 ∧ ¬ 𝑠 ≤ (𝑞 ∨ 𝑟)))
36		simp1r 1199	. . . . . . . . . . . . 13 ⊢ (((((𝐾 ∈ HL ∧ (𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃 ∧ 𝑊 ∈ 𝑉) ∧ (𝑋 ≤ 𝑊 ∧ 𝑌 ≤ 𝑊 ∧ 𝑋 ≠ 𝑌)) ∧ (𝑞 ∈ (Atoms‘𝐾) ∧ (𝑟 ∈ (Atoms‘𝐾) ∧ 𝑠 ∈ (Atoms‘𝐾))) ∧ (𝑞 ≠ 𝑟 ∧ ¬ 𝑠 ≤ (𝑞 ∨ 𝑟) ∧ 𝑋 = ((𝑞 ∨ 𝑟) ∨ 𝑠))) ∧ 𝑡 ∈ (Atoms‘𝐾)) ∧ (𝑢 ∈ (Atoms‘𝐾) ∧ 𝑣 ∈ (Atoms‘𝐾)) ∧ (𝑡 ≠ 𝑢 ∧ ¬ 𝑣 ≤ (𝑡 ∨ 𝑢) ∧ 𝑌 = ((𝑡 ∨ 𝑢) ∨ 𝑣))) → 𝑡 ∈ (Atoms‘𝐾))
37		simp2l 1200	. . . . . . . . . . . . 13 ⊢ (((((𝐾 ∈ HL ∧ (𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃 ∧ 𝑊 ∈ 𝑉) ∧ (𝑋 ≤ 𝑊 ∧ 𝑌 ≤ 𝑊 ∧ 𝑋 ≠ 𝑌)) ∧ (𝑞 ∈ (Atoms‘𝐾) ∧ (𝑟 ∈ (Atoms‘𝐾) ∧ 𝑠 ∈ (Atoms‘𝐾))) ∧ (𝑞 ≠ 𝑟 ∧ ¬ 𝑠 ≤ (𝑞 ∨ 𝑟) ∧ 𝑋 = ((𝑞 ∨ 𝑟) ∨ 𝑠))) ∧ 𝑡 ∈ (Atoms‘𝐾)) ∧ (𝑢 ∈ (Atoms‘𝐾) ∧ 𝑣 ∈ (Atoms‘𝐾)) ∧ (𝑡 ≠ 𝑢 ∧ ¬ 𝑣 ≤ (𝑡 ∨ 𝑢) ∧ 𝑌 = ((𝑡 ∨ 𝑢) ∨ 𝑣))) → 𝑢 ∈ (Atoms‘𝐾))
38		simp2r 1201	. . . . . . . . . . . . 13 ⊢ (((((𝐾 ∈ HL ∧ (𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃 ∧ 𝑊 ∈ 𝑉) ∧ (𝑋 ≤ 𝑊 ∧ 𝑌 ≤ 𝑊 ∧ 𝑋 ≠ 𝑌)) ∧ (𝑞 ∈ (Atoms‘𝐾) ∧ (𝑟 ∈ (Atoms‘𝐾) ∧ 𝑠 ∈ (Atoms‘𝐾))) ∧ (𝑞 ≠ 𝑟 ∧ ¬ 𝑠 ≤ (𝑞 ∨ 𝑟) ∧ 𝑋 = ((𝑞 ∨ 𝑟) ∨ 𝑠))) ∧ 𝑡 ∈ (Atoms‘𝐾)) ∧ (𝑢 ∈ (Atoms‘𝐾) ∧ 𝑣 ∈ (Atoms‘𝐾)) ∧ (𝑡 ≠ 𝑢 ∧ ¬ 𝑣 ≤ (𝑡 ∨ 𝑢) ∧ 𝑌 = ((𝑡 ∨ 𝑢) ∨ 𝑣))) → 𝑣 ∈ (Atoms‘𝐾))
39	36, 37, 38	3jca 1128	. . . . . . . . . . . 12 ⊢ (((((𝐾 ∈ HL ∧ (𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃 ∧ 𝑊 ∈ 𝑉) ∧ (𝑋 ≤ 𝑊 ∧ 𝑌 ≤ 𝑊 ∧ 𝑋 ≠ 𝑌)) ∧ (𝑞 ∈ (Atoms‘𝐾) ∧ (𝑟 ∈ (Atoms‘𝐾) ∧ 𝑠 ∈ (Atoms‘𝐾))) ∧ (𝑞 ≠ 𝑟 ∧ ¬ 𝑠 ≤ (𝑞 ∨ 𝑟) ∧ 𝑋 = ((𝑞 ∨ 𝑟) ∨ 𝑠))) ∧ 𝑡 ∈ (Atoms‘𝐾)) ∧ (𝑢 ∈ (Atoms‘𝐾) ∧ 𝑣 ∈ (Atoms‘𝐾)) ∧ (𝑡 ≠ 𝑢 ∧ ¬ 𝑣 ≤ (𝑡 ∨ 𝑢) ∧ 𝑌 = ((𝑡 ∨ 𝑢) ∨ 𝑣))) → (𝑡 ∈ (Atoms‘𝐾) ∧ 𝑢 ∈ (Atoms‘𝐾) ∧ 𝑣 ∈ (Atoms‘𝐾)))
40		simp31 1210	. . . . . . . . . . . . 13 ⊢ (((((𝐾 ∈ HL ∧ (𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃 ∧ 𝑊 ∈ 𝑉) ∧ (𝑋 ≤ 𝑊 ∧ 𝑌 ≤ 𝑊 ∧ 𝑋 ≠ 𝑌)) ∧ (𝑞 ∈ (Atoms‘𝐾) ∧ (𝑟 ∈ (Atoms‘𝐾) ∧ 𝑠 ∈ (Atoms‘𝐾))) ∧ (𝑞 ≠ 𝑟 ∧ ¬ 𝑠 ≤ (𝑞 ∨ 𝑟) ∧ 𝑋 = ((𝑞 ∨ 𝑟) ∨ 𝑠))) ∧ 𝑡 ∈ (Atoms‘𝐾)) ∧ (𝑢 ∈ (Atoms‘𝐾) ∧ 𝑣 ∈ (Atoms‘𝐾)) ∧ (𝑡 ≠ 𝑢 ∧ ¬ 𝑣 ≤ (𝑡 ∨ 𝑢) ∧ 𝑌 = ((𝑡 ∨ 𝑢) ∨ 𝑣))) → 𝑡 ≠ 𝑢)
41		simp32 1211	. . . . . . . . . . . . 13 ⊢ (((((𝐾 ∈ HL ∧ (𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃 ∧ 𝑊 ∈ 𝑉) ∧ (𝑋 ≤ 𝑊 ∧ 𝑌 ≤ 𝑊 ∧ 𝑋 ≠ 𝑌)) ∧ (𝑞 ∈ (Atoms‘𝐾) ∧ (𝑟 ∈ (Atoms‘𝐾) ∧ 𝑠 ∈ (Atoms‘𝐾))) ∧ (𝑞 ≠ 𝑟 ∧ ¬ 𝑠 ≤ (𝑞 ∨ 𝑟) ∧ 𝑋 = ((𝑞 ∨ 𝑟) ∨ 𝑠))) ∧ 𝑡 ∈ (Atoms‘𝐾)) ∧ (𝑢 ∈ (Atoms‘𝐾) ∧ 𝑣 ∈ (Atoms‘𝐾)) ∧ (𝑡 ≠ 𝑢 ∧ ¬ 𝑣 ≤ (𝑡 ∨ 𝑢) ∧ 𝑌 = ((𝑡 ∨ 𝑢) ∨ 𝑣))) → ¬ 𝑣 ≤ (𝑡 ∨ 𝑢))
42	40, 41	jca 511	. . . . . . . . . . . 12 ⊢ (((((𝐾 ∈ HL ∧ (𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃 ∧ 𝑊 ∈ 𝑉) ∧ (𝑋 ≤ 𝑊 ∧ 𝑌 ≤ 𝑊 ∧ 𝑋 ≠ 𝑌)) ∧ (𝑞 ∈ (Atoms‘𝐾) ∧ (𝑟 ∈ (Atoms‘𝐾) ∧ 𝑠 ∈ (Atoms‘𝐾))) ∧ (𝑞 ≠ 𝑟 ∧ ¬ 𝑠 ≤ (𝑞 ∨ 𝑟) ∧ 𝑋 = ((𝑞 ∨ 𝑟) ∨ 𝑠))) ∧ 𝑡 ∈ (Atoms‘𝐾)) ∧ (𝑢 ∈ (Atoms‘𝐾) ∧ 𝑣 ∈ (Atoms‘𝐾)) ∧ (𝑡 ≠ 𝑢 ∧ ¬ 𝑣 ≤ (𝑡 ∨ 𝑢) ∧ 𝑌 = ((𝑡 ∨ 𝑢) ∨ 𝑣))) → (𝑡 ≠ 𝑢 ∧ ¬ 𝑣 ≤ (𝑡 ∨ 𝑢)))
43		simpl13 1251	. . . . . . . . . . . . . 14 ⊢ ((((𝐾 ∈ HL ∧ (𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃 ∧ 𝑊 ∈ 𝑉) ∧ (𝑋 ≤ 𝑊 ∧ 𝑌 ≤ 𝑊 ∧ 𝑋 ≠ 𝑌)) ∧ (𝑞 ∈ (Atoms‘𝐾) ∧ (𝑟 ∈ (Atoms‘𝐾) ∧ 𝑠 ∈ (Atoms‘𝐾))) ∧ (𝑞 ≠ 𝑟 ∧ ¬ 𝑠 ≤ (𝑞 ∨ 𝑟) ∧ 𝑋 = ((𝑞 ∨ 𝑟) ∨ 𝑠))) ∧ 𝑡 ∈ (Atoms‘𝐾)) → (𝑋 ≤ 𝑊 ∧ 𝑌 ≤ 𝑊 ∧ 𝑋 ≠ 𝑌))
44	43	3ad2ant1 1133	. . . . . . . . . . . . 13 ⊢ (((((𝐾 ∈ HL ∧ (𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃 ∧ 𝑊 ∈ 𝑉) ∧ (𝑋 ≤ 𝑊 ∧ 𝑌 ≤ 𝑊 ∧ 𝑋 ≠ 𝑌)) ∧ (𝑞 ∈ (Atoms‘𝐾) ∧ (𝑟 ∈ (Atoms‘𝐾) ∧ 𝑠 ∈ (Atoms‘𝐾))) ∧ (𝑞 ≠ 𝑟 ∧ ¬ 𝑠 ≤ (𝑞 ∨ 𝑟) ∧ 𝑋 = ((𝑞 ∨ 𝑟) ∨ 𝑠))) ∧ 𝑡 ∈ (Atoms‘𝐾)) ∧ (𝑢 ∈ (Atoms‘𝐾) ∧ 𝑣 ∈ (Atoms‘𝐾)) ∧ (𝑡 ≠ 𝑢 ∧ ¬ 𝑣 ≤ (𝑡 ∨ 𝑢) ∧ 𝑌 = ((𝑡 ∨ 𝑢) ∨ 𝑣))) → (𝑋 ≤ 𝑊 ∧ 𝑌 ≤ 𝑊 ∧ 𝑋 ≠ 𝑌))
45		breq1 5092	. . . . . . . . . . . . . . . 16 ⊢ (𝑋 = ((𝑞 ∨ 𝑟) ∨ 𝑠) → (𝑋 ≤ 𝑊 ↔ ((𝑞 ∨ 𝑟) ∨ 𝑠) ≤ 𝑊))
46		neeq1 2990	. . . . . . . . . . . . . . . 16 ⊢ (𝑋 = ((𝑞 ∨ 𝑟) ∨ 𝑠) → (𝑋 ≠ 𝑌 ↔ ((𝑞 ∨ 𝑟) ∨ 𝑠) ≠ 𝑌))
47	45, 46	3anbi13d 1440	. . . . . . . . . . . . . . 15 ⊢ (𝑋 = ((𝑞 ∨ 𝑟) ∨ 𝑠) → ((𝑋 ≤ 𝑊 ∧ 𝑌 ≤ 𝑊 ∧ 𝑋 ≠ 𝑌) ↔ (((𝑞 ∨ 𝑟) ∨ 𝑠) ≤ 𝑊 ∧ 𝑌 ≤ 𝑊 ∧ ((𝑞 ∨ 𝑟) ∨ 𝑠) ≠ 𝑌)))
48		breq1 5092	. . . . . . . . . . . . . . . 16 ⊢ (𝑌 = ((𝑡 ∨ 𝑢) ∨ 𝑣) → (𝑌 ≤ 𝑊 ↔ ((𝑡 ∨ 𝑢) ∨ 𝑣) ≤ 𝑊))
49		neeq2 2991	. . . . . . . . . . . . . . . 16 ⊢ (𝑌 = ((𝑡 ∨ 𝑢) ∨ 𝑣) → (((𝑞 ∨ 𝑟) ∨ 𝑠) ≠ 𝑌 ↔ ((𝑞 ∨ 𝑟) ∨ 𝑠) ≠ ((𝑡 ∨ 𝑢) ∨ 𝑣)))
50	48, 49	3anbi23d 1441	. . . . . . . . . . . . . . 15 ⊢ (𝑌 = ((𝑡 ∨ 𝑢) ∨ 𝑣) → ((((𝑞 ∨ 𝑟) ∨ 𝑠) ≤ 𝑊 ∧ 𝑌 ≤ 𝑊 ∧ ((𝑞 ∨ 𝑟) ∨ 𝑠) ≠ 𝑌) ↔ (((𝑞 ∨ 𝑟) ∨ 𝑠) ≤ 𝑊 ∧ ((𝑡 ∨ 𝑢) ∨ 𝑣) ≤ 𝑊 ∧ ((𝑞 ∨ 𝑟) ∨ 𝑠) ≠ ((𝑡 ∨ 𝑢) ∨ 𝑣))))
51	47, 50	sylan9bb 509	. . . . . . . . . . . . . 14 ⊢ ((𝑋 = ((𝑞 ∨ 𝑟) ∨ 𝑠) ∧ 𝑌 = ((𝑡 ∨ 𝑢) ∨ 𝑣)) → ((𝑋 ≤ 𝑊 ∧ 𝑌 ≤ 𝑊 ∧ 𝑋 ≠ 𝑌) ↔ (((𝑞 ∨ 𝑟) ∨ 𝑠) ≤ 𝑊 ∧ ((𝑡 ∨ 𝑢) ∨ 𝑣) ≤ 𝑊 ∧ ((𝑞 ∨ 𝑟) ∨ 𝑠) ≠ ((𝑡 ∨ 𝑢) ∨ 𝑣))))
52	17, 18, 51	syl2anc 584	. . . . . . . . . . . . 13 ⊢ (((((𝐾 ∈ HL ∧ (𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃 ∧ 𝑊 ∈ 𝑉) ∧ (𝑋 ≤ 𝑊 ∧ 𝑌 ≤ 𝑊 ∧ 𝑋 ≠ 𝑌)) ∧ (𝑞 ∈ (Atoms‘𝐾) ∧ (𝑟 ∈ (Atoms‘𝐾) ∧ 𝑠 ∈ (Atoms‘𝐾))) ∧ (𝑞 ≠ 𝑟 ∧ ¬ 𝑠 ≤ (𝑞 ∨ 𝑟) ∧ 𝑋 = ((𝑞 ∨ 𝑟) ∨ 𝑠))) ∧ 𝑡 ∈ (Atoms‘𝐾)) ∧ (𝑢 ∈ (Atoms‘𝐾) ∧ 𝑣 ∈ (Atoms‘𝐾)) ∧ (𝑡 ≠ 𝑢 ∧ ¬ 𝑣 ≤ (𝑡 ∨ 𝑢) ∧ 𝑌 = ((𝑡 ∨ 𝑢) ∨ 𝑣))) → ((𝑋 ≤ 𝑊 ∧ 𝑌 ≤ 𝑊 ∧ 𝑋 ≠ 𝑌) ↔ (((𝑞 ∨ 𝑟) ∨ 𝑠) ≤ 𝑊 ∧ ((𝑡 ∨ 𝑢) ∨ 𝑣) ≤ 𝑊 ∧ ((𝑞 ∨ 𝑟) ∨ 𝑠) ≠ ((𝑡 ∨ 𝑢) ∨ 𝑣))))
53	44, 52	mpbid 232	. . . . . . . . . . . 12 ⊢ (((((𝐾 ∈ HL ∧ (𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃 ∧ 𝑊 ∈ 𝑉) ∧ (𝑋 ≤ 𝑊 ∧ 𝑌 ≤ 𝑊 ∧ 𝑋 ≠ 𝑌)) ∧ (𝑞 ∈ (Atoms‘𝐾) ∧ (𝑟 ∈ (Atoms‘𝐾) ∧ 𝑠 ∈ (Atoms‘𝐾))) ∧ (𝑞 ≠ 𝑟 ∧ ¬ 𝑠 ≤ (𝑞 ∨ 𝑟) ∧ 𝑋 = ((𝑞 ∨ 𝑟) ∨ 𝑠))) ∧ 𝑡 ∈ (Atoms‘𝐾)) ∧ (𝑢 ∈ (Atoms‘𝐾) ∧ 𝑣 ∈ (Atoms‘𝐾)) ∧ (𝑡 ≠ 𝑢 ∧ ¬ 𝑣 ≤ (𝑡 ∨ 𝑢) ∧ 𝑌 = ((𝑡 ∨ 𝑢) ∨ 𝑣))) → (((𝑞 ∨ 𝑟) ∨ 𝑠) ≤ 𝑊 ∧ ((𝑡 ∨ 𝑢) ∨ 𝑣) ≤ 𝑊 ∧ ((𝑞 ∨ 𝑟) ∨ 𝑠) ≠ ((𝑡 ∨ 𝑢) ∨ 𝑣)))
54		2lplnj.v	. . . . . . . . . . . . 13 ⊢ 𝑉 = (LVols‘𝐾)
55	2, 3, 4, 54	2lplnja 39728	. . . . . . . . . . . 12 ⊢ ((((𝐾 ∈ HL ∧ 𝑊 ∈ 𝑉) ∧ (𝑞 ∈ (Atoms‘𝐾) ∧ 𝑟 ∈ (Atoms‘𝐾) ∧ 𝑠 ∈ (Atoms‘𝐾)) ∧ (𝑞 ≠ 𝑟 ∧ ¬ 𝑠 ≤ (𝑞 ∨ 𝑟))) ∧ ((𝑡 ∈ (Atoms‘𝐾) ∧ 𝑢 ∈ (Atoms‘𝐾) ∧ 𝑣 ∈ (Atoms‘𝐾)) ∧ (𝑡 ≠ 𝑢 ∧ ¬ 𝑣 ≤ (𝑡 ∨ 𝑢))) ∧ (((𝑞 ∨ 𝑟) ∨ 𝑠) ≤ 𝑊 ∧ ((𝑡 ∨ 𝑢) ∨ 𝑣) ≤ 𝑊 ∧ ((𝑞 ∨ 𝑟) ∨ 𝑠) ≠ ((𝑡 ∨ 𝑢) ∨ 𝑣))) → (((𝑞 ∨ 𝑟) ∨ 𝑠) ∨ ((𝑡 ∨ 𝑢) ∨ 𝑣)) = 𝑊)
56	24, 30, 35, 39, 42, 53, 55	syl321anc 1394	. . . . . . . . . . 11 ⊢ (((((𝐾 ∈ HL ∧ (𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃 ∧ 𝑊 ∈ 𝑉) ∧ (𝑋 ≤ 𝑊 ∧ 𝑌 ≤ 𝑊 ∧ 𝑋 ≠ 𝑌)) ∧ (𝑞 ∈ (Atoms‘𝐾) ∧ (𝑟 ∈ (Atoms‘𝐾) ∧ 𝑠 ∈ (Atoms‘𝐾))) ∧ (𝑞 ≠ 𝑟 ∧ ¬ 𝑠 ≤ (𝑞 ∨ 𝑟) ∧ 𝑋 = ((𝑞 ∨ 𝑟) ∨ 𝑠))) ∧ 𝑡 ∈ (Atoms‘𝐾)) ∧ (𝑢 ∈ (Atoms‘𝐾) ∧ 𝑣 ∈ (Atoms‘𝐾)) ∧ (𝑡 ≠ 𝑢 ∧ ¬ 𝑣 ≤ (𝑡 ∨ 𝑢) ∧ 𝑌 = ((𝑡 ∨ 𝑢) ∨ 𝑣))) → (((𝑞 ∨ 𝑟) ∨ 𝑠) ∨ ((𝑡 ∨ 𝑢) ∨ 𝑣)) = 𝑊)
57	19, 56	eqtrd 2766	. . . . . . . . . 10 ⊢ (((((𝐾 ∈ HL ∧ (𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃 ∧ 𝑊 ∈ 𝑉) ∧ (𝑋 ≤ 𝑊 ∧ 𝑌 ≤ 𝑊 ∧ 𝑋 ≠ 𝑌)) ∧ (𝑞 ∈ (Atoms‘𝐾) ∧ (𝑟 ∈ (Atoms‘𝐾) ∧ 𝑠 ∈ (Atoms‘𝐾))) ∧ (𝑞 ≠ 𝑟 ∧ ¬ 𝑠 ≤ (𝑞 ∨ 𝑟) ∧ 𝑋 = ((𝑞 ∨ 𝑟) ∨ 𝑠))) ∧ 𝑡 ∈ (Atoms‘𝐾)) ∧ (𝑢 ∈ (Atoms‘𝐾) ∧ 𝑣 ∈ (Atoms‘𝐾)) ∧ (𝑡 ≠ 𝑢 ∧ ¬ 𝑣 ≤ (𝑡 ∨ 𝑢) ∧ 𝑌 = ((𝑡 ∨ 𝑢) ∨ 𝑣))) → (𝑋 ∨ 𝑌) = 𝑊)
58	57	3exp 1119	. . . . . . . . 9 ⊢ ((((𝐾 ∈ HL ∧ (𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃 ∧ 𝑊 ∈ 𝑉) ∧ (𝑋 ≤ 𝑊 ∧ 𝑌 ≤ 𝑊 ∧ 𝑋 ≠ 𝑌)) ∧ (𝑞 ∈ (Atoms‘𝐾) ∧ (𝑟 ∈ (Atoms‘𝐾) ∧ 𝑠 ∈ (Atoms‘𝐾))) ∧ (𝑞 ≠ 𝑟 ∧ ¬ 𝑠 ≤ (𝑞 ∨ 𝑟) ∧ 𝑋 = ((𝑞 ∨ 𝑟) ∨ 𝑠))) ∧ 𝑡 ∈ (Atoms‘𝐾)) → ((𝑢 ∈ (Atoms‘𝐾) ∧ 𝑣 ∈ (Atoms‘𝐾)) → ((𝑡 ≠ 𝑢 ∧ ¬ 𝑣 ≤ (𝑡 ∨ 𝑢) ∧ 𝑌 = ((𝑡 ∨ 𝑢) ∨ 𝑣)) → (𝑋 ∨ 𝑌) = 𝑊)))
59	58	rexlimdvv 3188	. . . . . . . 8 ⊢ ((((𝐾 ∈ HL ∧ (𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃 ∧ 𝑊 ∈ 𝑉) ∧ (𝑋 ≤ 𝑊 ∧ 𝑌 ≤ 𝑊 ∧ 𝑋 ≠ 𝑌)) ∧ (𝑞 ∈ (Atoms‘𝐾) ∧ (𝑟 ∈ (Atoms‘𝐾) ∧ 𝑠 ∈ (Atoms‘𝐾))) ∧ (𝑞 ≠ 𝑟 ∧ ¬ 𝑠 ≤ (𝑞 ∨ 𝑟) ∧ 𝑋 = ((𝑞 ∨ 𝑟) ∨ 𝑠))) ∧ 𝑡 ∈ (Atoms‘𝐾)) → (∃𝑢 ∈ (Atoms‘𝐾)∃𝑣 ∈ (Atoms‘𝐾)(𝑡 ≠ 𝑢 ∧ ¬ 𝑣 ≤ (𝑡 ∨ 𝑢) ∧ 𝑌 = ((𝑡 ∨ 𝑢) ∨ 𝑣)) → (𝑋 ∨ 𝑌) = 𝑊))
60	59	rexlimdva 3133	. . . . . . 7 ⊢ (((𝐾 ∈ HL ∧ (𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃 ∧ 𝑊 ∈ 𝑉) ∧ (𝑋 ≤ 𝑊 ∧ 𝑌 ≤ 𝑊 ∧ 𝑋 ≠ 𝑌)) ∧ (𝑞 ∈ (Atoms‘𝐾) ∧ (𝑟 ∈ (Atoms‘𝐾) ∧ 𝑠 ∈ (Atoms‘𝐾))) ∧ (𝑞 ≠ 𝑟 ∧ ¬ 𝑠 ≤ (𝑞 ∨ 𝑟) ∧ 𝑋 = ((𝑞 ∨ 𝑟) ∨ 𝑠))) → (∃𝑡 ∈ (Atoms‘𝐾)∃𝑢 ∈ (Atoms‘𝐾)∃𝑣 ∈ (Atoms‘𝐾)(𝑡 ≠ 𝑢 ∧ ¬ 𝑣 ≤ (𝑡 ∨ 𝑢) ∧ 𝑌 = ((𝑡 ∨ 𝑢) ∨ 𝑣)) → (𝑋 ∨ 𝑌) = 𝑊))
61	60	3exp 1119	. . . . . 6 ⊢ ((𝐾 ∈ HL ∧ (𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃 ∧ 𝑊 ∈ 𝑉) ∧ (𝑋 ≤ 𝑊 ∧ 𝑌 ≤ 𝑊 ∧ 𝑋 ≠ 𝑌)) → ((𝑞 ∈ (Atoms‘𝐾) ∧ (𝑟 ∈ (Atoms‘𝐾) ∧ 𝑠 ∈ (Atoms‘𝐾))) → ((𝑞 ≠ 𝑟 ∧ ¬ 𝑠 ≤ (𝑞 ∨ 𝑟) ∧ 𝑋 = ((𝑞 ∨ 𝑟) ∨ 𝑠)) → (∃𝑡 ∈ (Atoms‘𝐾)∃𝑢 ∈ (Atoms‘𝐾)∃𝑣 ∈ (Atoms‘𝐾)(𝑡 ≠ 𝑢 ∧ ¬ 𝑣 ≤ (𝑡 ∨ 𝑢) ∧ 𝑌 = ((𝑡 ∨ 𝑢) ∨ 𝑣)) → (𝑋 ∨ 𝑌) = 𝑊))))
62	61	expdimp 452	. . . . 5 ⊢ (((𝐾 ∈ HL ∧ (𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃 ∧ 𝑊 ∈ 𝑉) ∧ (𝑋 ≤ 𝑊 ∧ 𝑌 ≤ 𝑊 ∧ 𝑋 ≠ 𝑌)) ∧ 𝑞 ∈ (Atoms‘𝐾)) → ((𝑟 ∈ (Atoms‘𝐾) ∧ 𝑠 ∈ (Atoms‘𝐾)) → ((𝑞 ≠ 𝑟 ∧ ¬ 𝑠 ≤ (𝑞 ∨ 𝑟) ∧ 𝑋 = ((𝑞 ∨ 𝑟) ∨ 𝑠)) → (∃𝑡 ∈ (Atoms‘𝐾)∃𝑢 ∈ (Atoms‘𝐾)∃𝑣 ∈ (Atoms‘𝐾)(𝑡 ≠ 𝑢 ∧ ¬ 𝑣 ≤ (𝑡 ∨ 𝑢) ∧ 𝑌 = ((𝑡 ∨ 𝑢) ∨ 𝑣)) → (𝑋 ∨ 𝑌) = 𝑊))))
63	62	rexlimdvv 3188	. . . 4 ⊢ (((𝐾 ∈ HL ∧ (𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃 ∧ 𝑊 ∈ 𝑉) ∧ (𝑋 ≤ 𝑊 ∧ 𝑌 ≤ 𝑊 ∧ 𝑋 ≠ 𝑌)) ∧ 𝑞 ∈ (Atoms‘𝐾)) → (∃𝑟 ∈ (Atoms‘𝐾)∃𝑠 ∈ (Atoms‘𝐾)(𝑞 ≠ 𝑟 ∧ ¬ 𝑠 ≤ (𝑞 ∨ 𝑟) ∧ 𝑋 = ((𝑞 ∨ 𝑟) ∨ 𝑠)) → (∃𝑡 ∈ (Atoms‘𝐾)∃𝑢 ∈ (Atoms‘𝐾)∃𝑣 ∈ (Atoms‘𝐾)(𝑡 ≠ 𝑢 ∧ ¬ 𝑣 ≤ (𝑡 ∨ 𝑢) ∧ 𝑌 = ((𝑡 ∨ 𝑢) ∨ 𝑣)) → (𝑋 ∨ 𝑌) = 𝑊)))
64	63	rexlimdva 3133	. . 3 ⊢ ((𝐾 ∈ HL ∧ (𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃 ∧ 𝑊 ∈ 𝑉) ∧ (𝑋 ≤ 𝑊 ∧ 𝑌 ≤ 𝑊 ∧ 𝑋 ≠ 𝑌)) → (∃𝑞 ∈ (Atoms‘𝐾)∃𝑟 ∈ (Atoms‘𝐾)∃𝑠 ∈ (Atoms‘𝐾)(𝑞 ≠ 𝑟 ∧ ¬ 𝑠 ≤ (𝑞 ∨ 𝑟) ∧ 𝑋 = ((𝑞 ∨ 𝑟) ∨ 𝑠)) → (∃𝑡 ∈ (Atoms‘𝐾)∃𝑢 ∈ (Atoms‘𝐾)∃𝑣 ∈ (Atoms‘𝐾)(𝑡 ≠ 𝑢 ∧ ¬ 𝑣 ≤ (𝑡 ∨ 𝑢) ∧ 𝑌 = ((𝑡 ∨ 𝑢) ∨ 𝑣)) → (𝑋 ∨ 𝑌) = 𝑊)))
65	64	impd 410	. 2 ⊢ ((𝐾 ∈ HL ∧ (𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃 ∧ 𝑊 ∈ 𝑉) ∧ (𝑋 ≤ 𝑊 ∧ 𝑌 ≤ 𝑊 ∧ 𝑋 ≠ 𝑌)) → ((∃𝑞 ∈ (Atoms‘𝐾)∃𝑟 ∈ (Atoms‘𝐾)∃𝑠 ∈ (Atoms‘𝐾)(𝑞 ≠ 𝑟 ∧ ¬ 𝑠 ≤ (𝑞 ∨ 𝑟) ∧ 𝑋 = ((𝑞 ∨ 𝑟) ∨ 𝑠)) ∧ ∃𝑡 ∈ (Atoms‘𝐾)∃𝑢 ∈ (Atoms‘𝐾)∃𝑣 ∈ (Atoms‘𝐾)(𝑡 ≠ 𝑢 ∧ ¬ 𝑣 ≤ (𝑡 ∨ 𝑢) ∧ 𝑌 = ((𝑡 ∨ 𝑢) ∨ 𝑣))) → (𝑋 ∨ 𝑌) = 𝑊))
66	15, 65	mpd 15	1 ⊢ ((𝐾 ∈ HL ∧ (𝑋 ∈ 𝑃 ∧ 𝑌 ∈ 𝑃 ∧ 𝑊 ∈ 𝑉) ∧ (𝑋 ≤ 𝑊 ∧ 𝑌 ≤ 𝑊 ∧ 𝑋 ≠ 𝑌)) → (𝑋 ∨ 𝑌) = 𝑊)

Syntax hints:  ¬ wn 3   → wi 4   ↔ wb 206   ∧ wa 395   ∧ w3a 1086   = wceq 1541   ∈ wcel 2111   ≠ wne 2928  ∃wrex 3056   class class class wbr 5089  ‘cfv 6481  (class class class)co 7346  Basecbs 17120  lecple 17168  joincjn 18217  Atomscatm 39372  HLchlt 39459  LPlanesclpl 39601  LVolsclvol 39602

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1796  ax-4 1810  ax-5 1911  ax-6 1968  ax-7 2009  ax-8 2113  ax-9 2121  ax-10 2144  ax-11 2160  ax-12 2180  ax-ext 2703  ax-rep 5215  ax-sep 5232  ax-nul 5242  ax-pow 5301  ax-pr 5368  ax-un 7668

This theorem depends on definitions:  df-bi 207  df-an 396  df-or 848  df-3or 1087  df-3an 1088  df-tru 1544  df-fal 1554  df-ex 1781  df-nf 1785  df-sb 2068  df-mo 2535  df-eu 2564  df-clab 2710  df-cleq 2723  df-clel 2806  df-nfc 2881  df-ne 2929  df-ral 3048  df-rex 3057  df-rmo 3346  df-reu 3347  df-rab 3396  df-v 3438  df-sbc 3737  df-csb 3846  df-dif 3900  df-un 3902  df-in 3904  df-ss 3914  df-nul 4281  df-if 4473  df-pw 4549  df-sn 4574  df-pr 4576  df-op 4580  df-uni 4857  df-iun 4941  df-br 5090  df-opab 5152  df-mpt 5171  df-id 5509  df-xp 5620  df-rel 5621  df-cnv 5622  df-co 5623  df-dm 5624  df-rn 5625  df-res 5626  df-ima 5627  df-iota 6437  df-fun 6483  df-fn 6484  df-f 6485  df-f1 6486  df-fo 6487  df-f1o 6488  df-fv 6489  df-riota 7303  df-ov 7349  df-oprab 7350  df-proset 18200  df-poset 18219  df-plt 18234  df-lub 18250  df-glb 18251  df-join 18252  df-meet 18253  df-p0 18329  df-lat 18338  df-clat 18405  df-oposet 39285  df-ol 39287  df-oml 39288  df-covers 39375  df-ats 39376  df-atl 39407  df-cvlat 39431  df-hlat 39460  df-llines 39607  df-lplanes 39608  df-lvols 39609

This theorem is referenced by:  2lplnm2N  39730  dalem13  39785