Theorem atlatmstc 34606

Description: An atomic, complete, orthomodular lattice is atomistic i.e. every element is the join of the atoms under it. See remark before Proposition 1 in [Kalmbach] p. 140; also remark in [BeltramettiCassinelli] p. 98. (hatomistici 29221 analog.) (Contributed by NM, 5-Nov-2012.)

Hypotheses

Ref	Expression
atlatmstc.b	⊢ 𝐵 = (Base‘𝐾)
atlatmstc.l	⊢ ≤ = (le‘𝐾)
atlatmstc.u	⊢ 1 = (lub‘𝐾)
atlatmstc.a	⊢ 𝐴 = (Atoms‘𝐾)

Assertion

Ref	Expression
atlatmstc	⊢ (((𝐾 ∈ OML ∧ 𝐾 ∈ CLat ∧ 𝐾 ∈ AtLat) ∧ 𝑋 ∈ 𝐵) → ( 1 ‘{𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋}) = 𝑋)

Distinct variable groups:   𝑦, ≤   𝑦,𝐴   𝑦,𝐵   𝑦,𝑋

Allowed substitution hints:   1 (𝑦)   𝐾(𝑦)

Proof of Theorem atlatmstc

Dummy variable 𝑥 is distinct from all other variables.

Step	Hyp	Ref	Expression
1		simpl2 1065	. . . 4 ⊢ (((𝐾 ∈ OML ∧ 𝐾 ∈ CLat ∧ 𝐾 ∈ AtLat) ∧ 𝑋 ∈ 𝐵) → 𝐾 ∈ CLat)
2		ssrab2 3687	. . . . 5 ⊢ {𝑦 ∈ 𝐵 ∣ 𝑦 ≤ 𝑋} ⊆ 𝐵
3		atlatmstc.b	. . . . . . 7 ⊢ 𝐵 = (Base‘𝐾)
4		atlatmstc.a	. . . . . . 7 ⊢ 𝐴 = (Atoms‘𝐾)
5	3, 4	atssbase 34577	. . . . . 6 ⊢ 𝐴 ⊆ 𝐵
6		rabss2 3685	. . . . . 6 ⊢ (𝐴 ⊆ 𝐵 → {𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋} ⊆ {𝑦 ∈ 𝐵 ∣ 𝑦 ≤ 𝑋})
7	5, 6	ax-mp 5	. . . . 5 ⊢ {𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋} ⊆ {𝑦 ∈ 𝐵 ∣ 𝑦 ≤ 𝑋}
8		atlatmstc.l	. . . . . 6 ⊢ ≤ = (le‘𝐾)
9		atlatmstc.u	. . . . . 6 ⊢ 1 = (lub‘𝐾)
10	3, 8, 9	lubss 17121	. . . . 5 ⊢ ((𝐾 ∈ CLat ∧ {𝑦 ∈ 𝐵 ∣ 𝑦 ≤ 𝑋} ⊆ 𝐵 ∧ {𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋} ⊆ {𝑦 ∈ 𝐵 ∣ 𝑦 ≤ 𝑋}) → ( 1 ‘{𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋}) ≤ ( 1 ‘{𝑦 ∈ 𝐵 ∣ 𝑦 ≤ 𝑋}))
11	2, 7, 10	mp3an23 1416	. . . 4 ⊢ (𝐾 ∈ CLat → ( 1 ‘{𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋}) ≤ ( 1 ‘{𝑦 ∈ 𝐵 ∣ 𝑦 ≤ 𝑋}))
12	1, 11	syl 17	. . 3 ⊢ (((𝐾 ∈ OML ∧ 𝐾 ∈ CLat ∧ 𝐾 ∈ AtLat) ∧ 𝑋 ∈ 𝐵) → ( 1 ‘{𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋}) ≤ ( 1 ‘{𝑦 ∈ 𝐵 ∣ 𝑦 ≤ 𝑋}))
13		atlpos 34588	. . . . 5 ⊢ (𝐾 ∈ AtLat → 𝐾 ∈ Poset)
14	13	3ad2ant3 1084	. . . 4 ⊢ ((𝐾 ∈ OML ∧ 𝐾 ∈ CLat ∧ 𝐾 ∈ AtLat) → 𝐾 ∈ Poset)
15		simpl 473	. . . . 5 ⊢ ((𝐾 ∈ Poset ∧ 𝑋 ∈ 𝐵) → 𝐾 ∈ Poset)
16		simpr 477	. . . . 5 ⊢ ((𝐾 ∈ Poset ∧ 𝑋 ∈ 𝐵) → 𝑋 ∈ 𝐵)
17	3, 8, 9, 15, 16	lubid 16990	. . . 4 ⊢ ((𝐾 ∈ Poset ∧ 𝑋 ∈ 𝐵) → ( 1 ‘{𝑦 ∈ 𝐵 ∣ 𝑦 ≤ 𝑋}) = 𝑋)
18	14, 17	sylan 488	. . 3 ⊢ (((𝐾 ∈ OML ∧ 𝐾 ∈ CLat ∧ 𝐾 ∈ AtLat) ∧ 𝑋 ∈ 𝐵) → ( 1 ‘{𝑦 ∈ 𝐵 ∣ 𝑦 ≤ 𝑋}) = 𝑋)
19	12, 18	breqtrd 4679	. 2 ⊢ (((𝐾 ∈ OML ∧ 𝐾 ∈ CLat ∧ 𝐾 ∈ AtLat) ∧ 𝑋 ∈ 𝐵) → ( 1 ‘{𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋}) ≤ 𝑋)
20		breq1 4656	. . . . . . . . . 10 ⊢ (𝑦 = 𝑥 → (𝑦 ≤ 𝑋 ↔ 𝑥 ≤ 𝑋))
21	20	elrab 3363	. . . . . . . . 9 ⊢ (𝑥 ∈ {𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋} ↔ (𝑥 ∈ 𝐴 ∧ 𝑥 ≤ 𝑋))
22		simpll2 1101	. . . . . . . . . . 11 ⊢ ((((𝐾 ∈ OML ∧ 𝐾 ∈ CLat ∧ 𝐾 ∈ AtLat) ∧ 𝑋 ∈ 𝐵) ∧ 𝑥 ∈ {𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋}) → 𝐾 ∈ CLat)
23		ssrab2 3687	. . . . . . . . . . . . 13 ⊢ {𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋} ⊆ 𝐴
24	23, 5	sstri 3612	. . . . . . . . . . . 12 ⊢ {𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋} ⊆ 𝐵
25	3, 8, 9	lubel 17122	. . . . . . . . . . . 12 ⊢ ((𝐾 ∈ CLat ∧ 𝑥 ∈ {𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋} ∧ {𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋} ⊆ 𝐵) → 𝑥 ≤ ( 1 ‘{𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋}))
26	24, 25	mp3an3 1413	. . . . . . . . . . 11 ⊢ ((𝐾 ∈ CLat ∧ 𝑥 ∈ {𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋}) → 𝑥 ≤ ( 1 ‘{𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋}))
27	22, 26	sylancom 701	. . . . . . . . . 10 ⊢ ((((𝐾 ∈ OML ∧ 𝐾 ∈ CLat ∧ 𝐾 ∈ AtLat) ∧ 𝑋 ∈ 𝐵) ∧ 𝑥 ∈ {𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋}) → 𝑥 ≤ ( 1 ‘{𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋}))
28	27	ex 450	. . . . . . . . 9 ⊢ (((𝐾 ∈ OML ∧ 𝐾 ∈ CLat ∧ 𝐾 ∈ AtLat) ∧ 𝑋 ∈ 𝐵) → (𝑥 ∈ {𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋} → 𝑥 ≤ ( 1 ‘{𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋})))
29	21, 28	syl5bir 233	. . . . . . . 8 ⊢ (((𝐾 ∈ OML ∧ 𝐾 ∈ CLat ∧ 𝐾 ∈ AtLat) ∧ 𝑋 ∈ 𝐵) → ((𝑥 ∈ 𝐴 ∧ 𝑥 ≤ 𝑋) → 𝑥 ≤ ( 1 ‘{𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋})))
30	29	expdimp 453	. . . . . . 7 ⊢ ((((𝐾 ∈ OML ∧ 𝐾 ∈ CLat ∧ 𝐾 ∈ AtLat) ∧ 𝑋 ∈ 𝐵) ∧ 𝑥 ∈ 𝐴) → (𝑥 ≤ 𝑋 → 𝑥 ≤ ( 1 ‘{𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋})))
31		simpll3 1102	. . . . . . . . . . 11 ⊢ ((((𝐾 ∈ OML ∧ 𝐾 ∈ CLat ∧ 𝐾 ∈ AtLat) ∧ 𝑋 ∈ 𝐵) ∧ 𝑥 ∈ 𝐴) → 𝐾 ∈ AtLat)
32		eqid 2622	. . . . . . . . . . . 12 ⊢ (0.‘𝐾) = (0.‘𝐾)
33	32, 4	atn0 34595	. . . . . . . . . . 11 ⊢ ((𝐾 ∈ AtLat ∧ 𝑥 ∈ 𝐴) → 𝑥 ≠ (0.‘𝐾))
34	31, 33	sylancom 701	. . . . . . . . . 10 ⊢ ((((𝐾 ∈ OML ∧ 𝐾 ∈ CLat ∧ 𝐾 ∈ AtLat) ∧ 𝑋 ∈ 𝐵) ∧ 𝑥 ∈ 𝐴) → 𝑥 ≠ (0.‘𝐾))
35	34	adantr 481	. . . . . . . . 9 ⊢ (((((𝐾 ∈ OML ∧ 𝐾 ∈ CLat ∧ 𝐾 ∈ AtLat) ∧ 𝑋 ∈ 𝐵) ∧ 𝑥 ∈ 𝐴) ∧ 𝑥 ≤ ( 1 ‘{𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋})) → 𝑥 ≠ (0.‘𝐾))
36		simpl3 1066	. . . . . . . . . . . . . . . 16 ⊢ (((𝐾 ∈ OML ∧ 𝐾 ∈ CLat ∧ 𝐾 ∈ AtLat) ∧ 𝑋 ∈ 𝐵) → 𝐾 ∈ AtLat)
37		atllat 34587	. . . . . . . . . . . . . . . 16 ⊢ (𝐾 ∈ AtLat → 𝐾 ∈ Lat)
38	36, 37	syl 17	. . . . . . . . . . . . . . 15 ⊢ (((𝐾 ∈ OML ∧ 𝐾 ∈ CLat ∧ 𝐾 ∈ AtLat) ∧ 𝑋 ∈ 𝐵) → 𝐾 ∈ Lat)
39	38	adantr 481	. . . . . . . . . . . . . 14 ⊢ ((((𝐾 ∈ OML ∧ 𝐾 ∈ CLat ∧ 𝐾 ∈ AtLat) ∧ 𝑋 ∈ 𝐵) ∧ 𝑥 ∈ 𝐴) → 𝐾 ∈ Lat)
40	3, 4	atbase 34576	. . . . . . . . . . . . . . 15 ⊢ (𝑥 ∈ 𝐴 → 𝑥 ∈ 𝐵)
41	40	adantl 482	. . . . . . . . . . . . . 14 ⊢ ((((𝐾 ∈ OML ∧ 𝐾 ∈ CLat ∧ 𝐾 ∈ AtLat) ∧ 𝑋 ∈ 𝐵) ∧ 𝑥 ∈ 𝐴) → 𝑥 ∈ 𝐵)
42	3, 9	clatlubcl 17112	. . . . . . . . . . . . . . . 16 ⊢ ((𝐾 ∈ CLat ∧ {𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋} ⊆ 𝐵) → ( 1 ‘{𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋}) ∈ 𝐵)
43	1, 24, 42	sylancl 694	. . . . . . . . . . . . . . 15 ⊢ (((𝐾 ∈ OML ∧ 𝐾 ∈ CLat ∧ 𝐾 ∈ AtLat) ∧ 𝑋 ∈ 𝐵) → ( 1 ‘{𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋}) ∈ 𝐵)
44	43	adantr 481	. . . . . . . . . . . . . 14 ⊢ ((((𝐾 ∈ OML ∧ 𝐾 ∈ CLat ∧ 𝐾 ∈ AtLat) ∧ 𝑋 ∈ 𝐵) ∧ 𝑥 ∈ 𝐴) → ( 1 ‘{𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋}) ∈ 𝐵)
45		simpl1 1064	. . . . . . . . . . . . . . . . 17 ⊢ (((𝐾 ∈ OML ∧ 𝐾 ∈ CLat ∧ 𝐾 ∈ AtLat) ∧ 𝑋 ∈ 𝐵) → 𝐾 ∈ OML)
46		omlop 34528	. . . . . . . . . . . . . . . . 17 ⊢ (𝐾 ∈ OML → 𝐾 ∈ OP)
47	45, 46	syl 17	. . . . . . . . . . . . . . . 16 ⊢ (((𝐾 ∈ OML ∧ 𝐾 ∈ CLat ∧ 𝐾 ∈ AtLat) ∧ 𝑋 ∈ 𝐵) → 𝐾 ∈ OP)
48		eqid 2622	. . . . . . . . . . . . . . . . 17 ⊢ (oc‘𝐾) = (oc‘𝐾)
49	3, 48	opoccl 34481	. . . . . . . . . . . . . . . 16 ⊢ ((𝐾 ∈ OP ∧ ( 1 ‘{𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋}) ∈ 𝐵) → ((oc‘𝐾)‘( 1 ‘{𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋})) ∈ 𝐵)
50	47, 43, 49	syl2anc 693	. . . . . . . . . . . . . . 15 ⊢ (((𝐾 ∈ OML ∧ 𝐾 ∈ CLat ∧ 𝐾 ∈ AtLat) ∧ 𝑋 ∈ 𝐵) → ((oc‘𝐾)‘( 1 ‘{𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋})) ∈ 𝐵)
51	50	adantr 481	. . . . . . . . . . . . . 14 ⊢ ((((𝐾 ∈ OML ∧ 𝐾 ∈ CLat ∧ 𝐾 ∈ AtLat) ∧ 𝑋 ∈ 𝐵) ∧ 𝑥 ∈ 𝐴) → ((oc‘𝐾)‘( 1 ‘{𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋})) ∈ 𝐵)
52		eqid 2622	. . . . . . . . . . . . . . 15 ⊢ (meet‘𝐾) = (meet‘𝐾)
53	3, 8, 52	latlem12 17078	. . . . . . . . . . . . . 14 ⊢ ((𝐾 ∈ Lat ∧ (𝑥 ∈ 𝐵 ∧ ( 1 ‘{𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋}) ∈ 𝐵 ∧ ((oc‘𝐾)‘( 1 ‘{𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋})) ∈ 𝐵)) → ((𝑥 ≤ ( 1 ‘{𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋}) ∧ 𝑥 ≤ ((oc‘𝐾)‘( 1 ‘{𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋}))) ↔ 𝑥 ≤ (( 1 ‘{𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋})(meet‘𝐾)((oc‘𝐾)‘( 1 ‘{𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋})))))
54	39, 41, 44, 51, 53	syl13anc 1328	. . . . . . . . . . . . 13 ⊢ ((((𝐾 ∈ OML ∧ 𝐾 ∈ CLat ∧ 𝐾 ∈ AtLat) ∧ 𝑋 ∈ 𝐵) ∧ 𝑥 ∈ 𝐴) → ((𝑥 ≤ ( 1 ‘{𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋}) ∧ 𝑥 ≤ ((oc‘𝐾)‘( 1 ‘{𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋}))) ↔ 𝑥 ≤ (( 1 ‘{𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋})(meet‘𝐾)((oc‘𝐾)‘( 1 ‘{𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋})))))
55	3, 48, 52, 32	opnoncon 34495	. . . . . . . . . . . . . . . 16 ⊢ ((𝐾 ∈ OP ∧ ( 1 ‘{𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋}) ∈ 𝐵) → (( 1 ‘{𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋})(meet‘𝐾)((oc‘𝐾)‘( 1 ‘{𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋}))) = (0.‘𝐾))
56	47, 43, 55	syl2anc 693	. . . . . . . . . . . . . . 15 ⊢ (((𝐾 ∈ OML ∧ 𝐾 ∈ CLat ∧ 𝐾 ∈ AtLat) ∧ 𝑋 ∈ 𝐵) → (( 1 ‘{𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋})(meet‘𝐾)((oc‘𝐾)‘( 1 ‘{𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋}))) = (0.‘𝐾))
57	56	breq2d 4665	. . . . . . . . . . . . . 14 ⊢ (((𝐾 ∈ OML ∧ 𝐾 ∈ CLat ∧ 𝐾 ∈ AtLat) ∧ 𝑋 ∈ 𝐵) → (𝑥 ≤ (( 1 ‘{𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋})(meet‘𝐾)((oc‘𝐾)‘( 1 ‘{𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋}))) ↔ 𝑥 ≤ (0.‘𝐾)))
58	57	adantr 481	. . . . . . . . . . . . 13 ⊢ ((((𝐾 ∈ OML ∧ 𝐾 ∈ CLat ∧ 𝐾 ∈ AtLat) ∧ 𝑋 ∈ 𝐵) ∧ 𝑥 ∈ 𝐴) → (𝑥 ≤ (( 1 ‘{𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋})(meet‘𝐾)((oc‘𝐾)‘( 1 ‘{𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋}))) ↔ 𝑥 ≤ (0.‘𝐾)))
59	3, 8, 32	ople0 34474	. . . . . . . . . . . . . 14 ⊢ ((𝐾 ∈ OP ∧ 𝑥 ∈ 𝐵) → (𝑥 ≤ (0.‘𝐾) ↔ 𝑥 = (0.‘𝐾)))
60	47, 40, 59	syl2an 494	. . . . . . . . . . . . 13 ⊢ ((((𝐾 ∈ OML ∧ 𝐾 ∈ CLat ∧ 𝐾 ∈ AtLat) ∧ 𝑋 ∈ 𝐵) ∧ 𝑥 ∈ 𝐴) → (𝑥 ≤ (0.‘𝐾) ↔ 𝑥 = (0.‘𝐾)))
61	54, 58, 60	3bitrd 294	. . . . . . . . . . . 12 ⊢ ((((𝐾 ∈ OML ∧ 𝐾 ∈ CLat ∧ 𝐾 ∈ AtLat) ∧ 𝑋 ∈ 𝐵) ∧ 𝑥 ∈ 𝐴) → ((𝑥 ≤ ( 1 ‘{𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋}) ∧ 𝑥 ≤ ((oc‘𝐾)‘( 1 ‘{𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋}))) ↔ 𝑥 = (0.‘𝐾)))
62	61	biimpa 501	. . . . . . . . . . 11 ⊢ (((((𝐾 ∈ OML ∧ 𝐾 ∈ CLat ∧ 𝐾 ∈ AtLat) ∧ 𝑋 ∈ 𝐵) ∧ 𝑥 ∈ 𝐴) ∧ (𝑥 ≤ ( 1 ‘{𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋}) ∧ 𝑥 ≤ ((oc‘𝐾)‘( 1 ‘{𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋})))) → 𝑥 = (0.‘𝐾))
63	62	expr 643	. . . . . . . . . 10 ⊢ (((((𝐾 ∈ OML ∧ 𝐾 ∈ CLat ∧ 𝐾 ∈ AtLat) ∧ 𝑋 ∈ 𝐵) ∧ 𝑥 ∈ 𝐴) ∧ 𝑥 ≤ ( 1 ‘{𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋})) → (𝑥 ≤ ((oc‘𝐾)‘( 1 ‘{𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋})) → 𝑥 = (0.‘𝐾)))
64	63	necon3ad 2807	. . . . . . . . 9 ⊢ (((((𝐾 ∈ OML ∧ 𝐾 ∈ CLat ∧ 𝐾 ∈ AtLat) ∧ 𝑋 ∈ 𝐵) ∧ 𝑥 ∈ 𝐴) ∧ 𝑥 ≤ ( 1 ‘{𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋})) → (𝑥 ≠ (0.‘𝐾) → ¬ 𝑥 ≤ ((oc‘𝐾)‘( 1 ‘{𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋}))))
65	35, 64	mpd 15	. . . . . . . 8 ⊢ (((((𝐾 ∈ OML ∧ 𝐾 ∈ CLat ∧ 𝐾 ∈ AtLat) ∧ 𝑋 ∈ 𝐵) ∧ 𝑥 ∈ 𝐴) ∧ 𝑥 ≤ ( 1 ‘{𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋})) → ¬ 𝑥 ≤ ((oc‘𝐾)‘( 1 ‘{𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋})))
66	65	ex 450	. . . . . . 7 ⊢ ((((𝐾 ∈ OML ∧ 𝐾 ∈ CLat ∧ 𝐾 ∈ AtLat) ∧ 𝑋 ∈ 𝐵) ∧ 𝑥 ∈ 𝐴) → (𝑥 ≤ ( 1 ‘{𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋}) → ¬ 𝑥 ≤ ((oc‘𝐾)‘( 1 ‘{𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋}))))
67	30, 66	syld 47	. . . . . 6 ⊢ ((((𝐾 ∈ OML ∧ 𝐾 ∈ CLat ∧ 𝐾 ∈ AtLat) ∧ 𝑋 ∈ 𝐵) ∧ 𝑥 ∈ 𝐴) → (𝑥 ≤ 𝑋 → ¬ 𝑥 ≤ ((oc‘𝐾)‘( 1 ‘{𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋}))))
68		imnan 438	. . . . . 6 ⊢ ((𝑥 ≤ 𝑋 → ¬ 𝑥 ≤ ((oc‘𝐾)‘( 1 ‘{𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋}))) ↔ ¬ (𝑥 ≤ 𝑋 ∧ 𝑥 ≤ ((oc‘𝐾)‘( 1 ‘{𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋}))))
69	67, 68	sylib 208	. . . . 5 ⊢ ((((𝐾 ∈ OML ∧ 𝐾 ∈ CLat ∧ 𝐾 ∈ AtLat) ∧ 𝑋 ∈ 𝐵) ∧ 𝑥 ∈ 𝐴) → ¬ (𝑥 ≤ 𝑋 ∧ 𝑥 ≤ ((oc‘𝐾)‘( 1 ‘{𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋}))))
70		simplr 792	. . . . . 6 ⊢ ((((𝐾 ∈ OML ∧ 𝐾 ∈ CLat ∧ 𝐾 ∈ AtLat) ∧ 𝑋 ∈ 𝐵) ∧ 𝑥 ∈ 𝐴) → 𝑋 ∈ 𝐵)
71	3, 8, 52	latlem12 17078	. . . . . 6 ⊢ ((𝐾 ∈ Lat ∧ (𝑥 ∈ 𝐵 ∧ 𝑋 ∈ 𝐵 ∧ ((oc‘𝐾)‘( 1 ‘{𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋})) ∈ 𝐵)) → ((𝑥 ≤ 𝑋 ∧ 𝑥 ≤ ((oc‘𝐾)‘( 1 ‘{𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋}))) ↔ 𝑥 ≤ (𝑋(meet‘𝐾)((oc‘𝐾)‘( 1 ‘{𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋})))))
72	39, 41, 70, 51, 71	syl13anc 1328	. . . . 5 ⊢ ((((𝐾 ∈ OML ∧ 𝐾 ∈ CLat ∧ 𝐾 ∈ AtLat) ∧ 𝑋 ∈ 𝐵) ∧ 𝑥 ∈ 𝐴) → ((𝑥 ≤ 𝑋 ∧ 𝑥 ≤ ((oc‘𝐾)‘( 1 ‘{𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋}))) ↔ 𝑥 ≤ (𝑋(meet‘𝐾)((oc‘𝐾)‘( 1 ‘{𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋})))))
73	69, 72	mtbid 314	. . . 4 ⊢ ((((𝐾 ∈ OML ∧ 𝐾 ∈ CLat ∧ 𝐾 ∈ AtLat) ∧ 𝑋 ∈ 𝐵) ∧ 𝑥 ∈ 𝐴) → ¬ 𝑥 ≤ (𝑋(meet‘𝐾)((oc‘𝐾)‘( 1 ‘{𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋}))))
74	73	nrexdv 3001	. . 3 ⊢ (((𝐾 ∈ OML ∧ 𝐾 ∈ CLat ∧ 𝐾 ∈ AtLat) ∧ 𝑋 ∈ 𝐵) → ¬ ∃𝑥 ∈ 𝐴 𝑥 ≤ (𝑋(meet‘𝐾)((oc‘𝐾)‘( 1 ‘{𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋}))))
75		simpll3 1102	. . . . . 6 ⊢ ((((𝐾 ∈ OML ∧ 𝐾 ∈ CLat ∧ 𝐾 ∈ AtLat) ∧ 𝑋 ∈ 𝐵) ∧ (𝑋(meet‘𝐾)((oc‘𝐾)‘( 1 ‘{𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋}))) ≠ (0.‘𝐾)) → 𝐾 ∈ AtLat)
76		simpr 477	. . . . . . . 8 ⊢ (((𝐾 ∈ OML ∧ 𝐾 ∈ CLat ∧ 𝐾 ∈ AtLat) ∧ 𝑋 ∈ 𝐵) → 𝑋 ∈ 𝐵)
77	3, 52	latmcl 17052	. . . . . . . 8 ⊢ ((𝐾 ∈ Lat ∧ 𝑋 ∈ 𝐵 ∧ ((oc‘𝐾)‘( 1 ‘{𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋})) ∈ 𝐵) → (𝑋(meet‘𝐾)((oc‘𝐾)‘( 1 ‘{𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋}))) ∈ 𝐵)
78	38, 76, 50, 77	syl3anc 1326	. . . . . . 7 ⊢ (((𝐾 ∈ OML ∧ 𝐾 ∈ CLat ∧ 𝐾 ∈ AtLat) ∧ 𝑋 ∈ 𝐵) → (𝑋(meet‘𝐾)((oc‘𝐾)‘( 1 ‘{𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋}))) ∈ 𝐵)
79	78	adantr 481	. . . . . 6 ⊢ ((((𝐾 ∈ OML ∧ 𝐾 ∈ CLat ∧ 𝐾 ∈ AtLat) ∧ 𝑋 ∈ 𝐵) ∧ (𝑋(meet‘𝐾)((oc‘𝐾)‘( 1 ‘{𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋}))) ≠ (0.‘𝐾)) → (𝑋(meet‘𝐾)((oc‘𝐾)‘( 1 ‘{𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋}))) ∈ 𝐵)
80		simpr 477	. . . . . 6 ⊢ ((((𝐾 ∈ OML ∧ 𝐾 ∈ CLat ∧ 𝐾 ∈ AtLat) ∧ 𝑋 ∈ 𝐵) ∧ (𝑋(meet‘𝐾)((oc‘𝐾)‘( 1 ‘{𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋}))) ≠ (0.‘𝐾)) → (𝑋(meet‘𝐾)((oc‘𝐾)‘( 1 ‘{𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋}))) ≠ (0.‘𝐾))
81	3, 8, 32, 4	atlex 34603	. . . . . 6 ⊢ ((𝐾 ∈ AtLat ∧ (𝑋(meet‘𝐾)((oc‘𝐾)‘( 1 ‘{𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋}))) ∈ 𝐵 ∧ (𝑋(meet‘𝐾)((oc‘𝐾)‘( 1 ‘{𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋}))) ≠ (0.‘𝐾)) → ∃𝑥 ∈ 𝐴 𝑥 ≤ (𝑋(meet‘𝐾)((oc‘𝐾)‘( 1 ‘{𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋}))))
82	75, 79, 80, 81	syl3anc 1326	. . . . 5 ⊢ ((((𝐾 ∈ OML ∧ 𝐾 ∈ CLat ∧ 𝐾 ∈ AtLat) ∧ 𝑋 ∈ 𝐵) ∧ (𝑋(meet‘𝐾)((oc‘𝐾)‘( 1 ‘{𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋}))) ≠ (0.‘𝐾)) → ∃𝑥 ∈ 𝐴 𝑥 ≤ (𝑋(meet‘𝐾)((oc‘𝐾)‘( 1 ‘{𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋}))))
83	82	ex 450	. . . 4 ⊢ (((𝐾 ∈ OML ∧ 𝐾 ∈ CLat ∧ 𝐾 ∈ AtLat) ∧ 𝑋 ∈ 𝐵) → ((𝑋(meet‘𝐾)((oc‘𝐾)‘( 1 ‘{𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋}))) ≠ (0.‘𝐾) → ∃𝑥 ∈ 𝐴 𝑥 ≤ (𝑋(meet‘𝐾)((oc‘𝐾)‘( 1 ‘{𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋})))))
84	83	necon1bd 2812	. . 3 ⊢ (((𝐾 ∈ OML ∧ 𝐾 ∈ CLat ∧ 𝐾 ∈ AtLat) ∧ 𝑋 ∈ 𝐵) → (¬ ∃𝑥 ∈ 𝐴 𝑥 ≤ (𝑋(meet‘𝐾)((oc‘𝐾)‘( 1 ‘{𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋}))) → (𝑋(meet‘𝐾)((oc‘𝐾)‘( 1 ‘{𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋}))) = (0.‘𝐾)))
85	74, 84	mpd 15	. 2 ⊢ (((𝐾 ∈ OML ∧ 𝐾 ∈ CLat ∧ 𝐾 ∈ AtLat) ∧ 𝑋 ∈ 𝐵) → (𝑋(meet‘𝐾)((oc‘𝐾)‘( 1 ‘{𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋}))) = (0.‘𝐾))
86	3, 8, 52, 48, 32	omllaw3 34532	. . 3 ⊢ ((𝐾 ∈ OML ∧ ( 1 ‘{𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋}) ∈ 𝐵 ∧ 𝑋 ∈ 𝐵) → ((( 1 ‘{𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋}) ≤ 𝑋 ∧ (𝑋(meet‘𝐾)((oc‘𝐾)‘( 1 ‘{𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋}))) = (0.‘𝐾)) → ( 1 ‘{𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋}) = 𝑋))
87	45, 43, 76, 86	syl3anc 1326	. 2 ⊢ (((𝐾 ∈ OML ∧ 𝐾 ∈ CLat ∧ 𝐾 ∈ AtLat) ∧ 𝑋 ∈ 𝐵) → ((( 1 ‘{𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋}) ≤ 𝑋 ∧ (𝑋(meet‘𝐾)((oc‘𝐾)‘( 1 ‘{𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋}))) = (0.‘𝐾)) → ( 1 ‘{𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋}) = 𝑋))
88	19, 85, 87	mp2and 715	1 ⊢ (((𝐾 ∈ OML ∧ 𝐾 ∈ CLat ∧ 𝐾 ∈ AtLat) ∧ 𝑋 ∈ 𝐵) → ( 1 ‘{𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋}) = 𝑋)

Syntax hints:  ¬ wn 3   → wi 4   ↔ wb 196   ∧ wa 384   ∧ w3a 1037   = wceq 1483   ∈ wcel 1990   ≠ wne 2794  ∃wrex 2913  {crab 2916   ⊆ wss 3574   class class class wbr 4653  ‘cfv 5888  (class class class)co 6650  Basecbs 15857  lecple 15948  occoc 15949  Posetcpo 16940  lubclub 16942  meetcmee 16945  0.cp0 17037  Latclat 17045  CLatccla 17107  OPcops 34459  OMLcoml 34462  Atomscatm 34550  AtLatcal 34551

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1722  ax-4 1737  ax-5 1839  ax-6 1888  ax-7 1935  ax-8 1992  ax-9 1999  ax-10 2019  ax-11 2034  ax-12 2047  ax-13 2246  ax-ext 2602  ax-rep 4771  ax-sep 4781  ax-nul 4789  ax-pow 4843  ax-pr 4906  ax-un 6949

This theorem depends on definitions:  df-bi 197  df-or 385  df-an 386  df-3an 1039  df-tru 1486  df-ex 1705  df-nf 1710  df-sb 1881  df-eu 2474  df-mo 2475  df-clab 2609  df-cleq 2615  df-clel 2618  df-nfc 2753  df-ne 2795  df-ral 2917  df-rex 2918  df-reu 2919  df-rab 2921  df-v 3202  df-sbc 3436  df-csb 3534  df-dif 3577  df-un 3579  df-in 3581  df-ss 3588  df-nul 3916  df-if 4087  df-pw 4160  df-sn 4178  df-pr 4180  df-op 4184  df-uni 4437  df-iun 4522  df-br 4654  df-opab 4713  df-mpt 4730  df-id 5024  df-xp 5120  df-rel 5121  df-cnv 5122  df-co 5123  df-dm 5124  df-rn 5125  df-res 5126  df-ima 5127  df-iota 5851  df-fun 5890  df-fn 5891  df-f 5892  df-f1 5893  df-fo 5894  df-f1o 5895  df-fv 5896  df-riota 6611  df-ov 6653  df-oprab 6654  df-preset 16928  df-poset 16946  df-plt 16958  df-lub 16974  df-glb 16975  df-join 16976  df-meet 16977  df-p0 17039  df-lat 17046  df-clat 17108  df-oposet 34463  df-ol 34465  df-oml 34466  df-covers 34553  df-ats 34554  df-atl 34585

This theorem is referenced by:  atlatle  34607  hlatmstcOLDN  34683  pmaple  35047  pol1N  35196  polpmapN  35198  pmaplubN  35210