clatlubcl - Metamath Proof Explorer

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Theorem clatlubcl 17725

Description: Any subset of the base set has an LUB in a complete lattice. (Contributed by NM, 14-Sep-2011.)

**Hypotheses**
Ref	Expression
clatlubcl.b	⊢ 𝐵 = (Base‘𝐾)
clatlubcl.u	⊢ 𝑈 = (lub‘𝐾)

**Assertion**
Ref	Expression
clatlubcl	⊢ ((𝐾 ∈ CLat ∧ 𝑆 ⊆ 𝐵) → (𝑈‘𝑆) ∈ 𝐵)

**Proof of Theorem clatlubcl**
Step	Hyp	Ref	Expression
1		clatlubcl.b	. . 3 ⊢ 𝐵 = (Base‘𝐾)
2		clatlubcl.u	. . 3 ⊢ 𝑈 = (lub‘𝐾)
3		eqid 2824	. . 3 ⊢ (glb‘𝐾) = (glb‘𝐾)
4	1, 2, 3	clatlem 17724	. 2 ⊢ ((𝐾 ∈ CLat ∧ 𝑆 ⊆ 𝐵) → ((𝑈‘𝑆) ∈ 𝐵 ∧ ((glb‘𝐾)‘𝑆) ∈ 𝐵))
5	4	simpld 497	1 ⊢ ((𝐾 ∈ CLat ∧ 𝑆 ⊆ 𝐵) → (𝑈‘𝑆) ∈ 𝐵)

Colors of variables: wff setvar class

Syntax hints: → wi 4 ∧ wa 398 = wceq 1536 ∈ wcel 2113 ⊆ wss 3939 ‘cfv 6358 Basecbs 16486 lubclub 17555 glbcglb 17556 CLatccla 17720

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1969 ax-7 2014 ax-8 2115 ax-9 2123 ax-10 2144 ax-11 2160 ax-12 2176 ax-ext 2796 ax-rep 5193 ax-sep 5206 ax-nul 5213 ax-pow 5269 ax-pr 5333

This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3an 1085 df-tru 1539 df-ex 1780 df-nf 1784 df-sb 2069 df-mo 2621 df-eu 2653 df-clab 2803 df-cleq 2817 df-clel 2896 df-nfc 2966 df-ne 3020 df-ral 3146 df-rex 3147 df-reu 3148 df-rab 3150 df-v 3499 df-sbc 3776 df-csb 3887 df-dif 3942 df-un 3944 df-in 3946 df-ss 3955 df-nul 4295 df-if 4471 df-pw 4544 df-sn 4571 df-pr 4573 df-op 4577 df-uni 4842 df-iun 4924 df-br 5070 df-opab 5132 df-mpt 5150 df-id 5463 df-xp 5564 df-rel 5565 df-cnv 5566 df-co 5567 df-dm 5568 df-rn 5569 df-res 5570 df-ima 5571 df-iota 6317 df-fun 6360 df-fn 6361 df-f 6362 df-f1 6363 df-fo 6364 df-f1o 6365 df-fv 6366 df-riota 7117 df-lub 17587 df-glb 17588 df-clat 17721

This theorem is referenced by: lubss 17734 lubun 17736 oduclatb 17757 clatp1cl 30663 atlatmstc 36459 polsubN 37047 2polvalN 37054 2polssN 37055 3polN 37056 2pmaplubN 37066 paddunN 37067 poldmj1N 37068 pnonsingN 37073 ispsubcl2N 37087 psubclinN 37088 paddatclN 37089 polsubclN 37092 poml4N 37093