Theorem hlatmstcOLDN 35418

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 29746 analog.) (Contributed by NM, 21-Oct-2011.) (New usage is discouraged.)

Hypotheses

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

Assertion

Ref	Expression
hlatmstcOLDN	⊢ ((𝐾 ∈ HL ∧ 𝑋 ∈ 𝐵) → (𝑈‘{𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋}) = 𝑋)

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

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

Proof of Theorem hlatmstcOLDN

Step	Hyp	Ref	Expression
1		hlomcmat 35386	. 2 ⊢ (𝐾 ∈ HL → (𝐾 ∈ OML ∧ 𝐾 ∈ CLat ∧ 𝐾 ∈ AtLat))
2		hlatmstc.b	. . 3 ⊢ 𝐵 = (Base‘𝐾)
3		hlatmstc.l	. . 3 ⊢ ≤ = (le‘𝐾)
4		hlatmstc.u	. . 3 ⊢ 𝑈 = (lub‘𝐾)
5		hlatmstc.a	. . 3 ⊢ 𝐴 = (Atoms‘𝐾)
6	2, 3, 4, 5	atlatmstc 35340	. 2 ⊢ (((𝐾 ∈ OML ∧ 𝐾 ∈ CLat ∧ 𝐾 ∈ AtLat) ∧ 𝑋 ∈ 𝐵) → (𝑈‘{𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋}) = 𝑋)
7	1, 6	sylan 576	1 ⊢ ((𝐾 ∈ HL ∧ 𝑋 ∈ 𝐵) → (𝑈‘{𝑦 ∈ 𝐴 ∣ 𝑦 ≤ 𝑋}) = 𝑋)

Syntax hints:   → wi 4   ∧ wa 385   ∧ w3a 1108   = wceq 1653   ∈ wcel 2157  {crab 3093   class class class wbr 4843  ‘cfv 6101  Basecbs 16184  lecple 16274  lubclub 17257  CLatccla 17422  OMLcoml 35196  Atomscatm 35284  AtLatcal 35285  HLchlt 35371

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1891  ax-4 1905  ax-5 2006  ax-6 2072  ax-7 2107  ax-8 2159  ax-9 2166  ax-10 2185  ax-11 2200  ax-12 2213  ax-13 2377  ax-ext 2777  ax-rep 4964  ax-sep 4975  ax-nul 4983  ax-pow 5035  ax-pr 5097  ax-un 7183

This theorem depends on definitions:  df-bi 199  df-an 386  df-or 875  df-3an 1110  df-tru 1657  df-ex 1876  df-nf 1880  df-sb 2065  df-mo 2591  df-eu 2609  df-clab 2786  df-cleq 2792  df-clel 2795  df-nfc 2930  df-ne 2972  df-ral 3094  df-rex 3095  df-reu 3096  df-rab 3098  df-v 3387  df-sbc 3634  df-csb 3729  df-dif 3772  df-un 3774  df-in 3776  df-ss 3783  df-nul 4116  df-if 4278  df-pw 4351  df-sn 4369  df-pr 4371  df-op 4375  df-uni 4629  df-iun 4712  df-br 4844  df-opab 4906  df-mpt 4923  df-id 5220  df-xp 5318  df-rel 5319  df-cnv 5320  df-co 5321  df-dm 5322  df-rn 5323  df-res 5324  df-ima 5325  df-iota 6064  df-fun 6103  df-fn 6104  df-f 6105  df-f1 6106  df-fo 6107  df-f1o 6108  df-fv 6109  df-riota 6839  df-ov 6881  df-oprab 6882  df-proset 17243  df-poset 17261  df-plt 17273  df-lub 17289  df-glb 17290  df-join 17291  df-meet 17292  df-p0 17354  df-lat 17361  df-clat 17423  df-oposet 35197  df-ol 35199  df-oml 35200  df-covers 35287  df-ats 35288  df-atl 35319  df-cvlat 35343  df-hlat 35372

This theorem is referenced by: (None)