clatlubcl - Metamath Proof Explorer

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Theorem clatlubcl 17721

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 2821	. . 3 ⊢ (glb‘𝐾) = (glb‘𝐾)
4	1, 2, 3	clatlem 17720	. 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 1533 ∈ wcel 2110 ⊆ wss 3935 ‘cfv 6354 Basecbs 16482 lubclub 17551 glbcglb 17552 CLatccla 17716

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1792 ax-4 1806 ax-5 1907 ax-6 1966 ax-7 2011 ax-8 2112 ax-9 2120 ax-10 2141 ax-11 2157 ax-12 2173 ax-ext 2793 ax-rep 5189 ax-sep 5202 ax-nul 5209 ax-pow 5265 ax-pr 5329

This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3an 1085 df-tru 1536 df-ex 1777 df-nf 1781 df-sb 2066 df-mo 2618 df-eu 2650 df-clab 2800 df-cleq 2814 df-clel 2893 df-nfc 2963 df-ne 3017 df-ral 3143 df-rex 3144 df-reu 3145 df-rab 3147 df-v 3496 df-sbc 3772 df-csb 3883 df-dif 3938 df-un 3940 df-in 3942 df-ss 3951 df-nul 4291 df-if 4467 df-pw 4540 df-sn 4567 df-pr 4569 df-op 4573 df-uni 4838 df-iun 4920 df-br 5066 df-opab 5128 df-mpt 5146 df-id 5459 df-xp 5560 df-rel 5561 df-cnv 5562 df-co 5563 df-dm 5564 df-rn 5565 df-res 5566 df-ima 5567 df-iota 6313 df-fun 6356 df-fn 6357 df-f 6358 df-f1 6359 df-fo 6360 df-f1o 6361 df-fv 6362 df-riota 7113 df-lub 17583 df-glb 17584 df-clat 17717

This theorem is referenced by: lubss 17730 lubun 17732 oduclatb 17753 clatp1cl 30659 atlatmstc 36454 polsubN 37042 2polvalN 37049 2polssN 37050 3polN 37051 2pmaplubN 37061 paddunN 37062 poldmj1N 37063 pnonsingN 37068 ispsubcl2N 37082 psubclinN 37083 paddatclN 37084 polsubclN 37087 poml4N 37088