polsubclN - Mathbox for Norm Megill

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Theorem polsubclN 39953

Description: A polarity is a closed projective subspace. (Contributed by NM, 24-Jan-2012.) (New usage is discouraged.)

**Hypotheses**
Ref	Expression
polsubcl.a	⊢ 𝐴 = (Atoms‘𝐾)
polsubcl.p	⊢ ⊥ = (⊥_𝑃‘𝐾)
polsubcl.c	⊢ 𝐶 = (PSubCl‘𝐾)

**Assertion**
Ref	Expression
polsubclN	⊢ ((𝐾 ∈ HL ∧ 𝑋 ⊆ 𝐴) → ( ⊥ ‘𝑋) ∈ 𝐶)

**Proof of Theorem polsubclN**
Step	Hyp	Ref	Expression
1		eqid 2730	. . 3 ⊢ (lub‘𝐾) = (lub‘𝐾)
2		eqid 2730	. . 3 ⊢ (oc‘𝐾) = (oc‘𝐾)
3		polsubcl.a	. . 3 ⊢ 𝐴 = (Atoms‘𝐾)
4		eqid 2730	. . 3 ⊢ (pmap‘𝐾) = (pmap‘𝐾)
5		polsubcl.p	. . 3 ⊢ ⊥ = (⊥_𝑃‘𝐾)
6	1, 2, 3, 4, 5	polval2N 39907	. 2 ⊢ ((𝐾 ∈ HL ∧ 𝑋 ⊆ 𝐴) → ( ⊥ ‘𝑋) = ((pmap‘𝐾)‘((oc‘𝐾)‘((lub‘𝐾)‘𝑋))))
7		hlop 39362	. . . . 5 ⊢ (𝐾 ∈ HL → 𝐾 ∈ OP)
8	7	adantr 480	. . . 4 ⊢ ((𝐾 ∈ HL ∧ 𝑋 ⊆ 𝐴) → 𝐾 ∈ OP)
9		hlclat 39358	. . . . 5 ⊢ (𝐾 ∈ HL → 𝐾 ∈ CLat)
10		eqid 2730	. . . . . . 7 ⊢ (Base‘𝐾) = (Base‘𝐾)
11	10, 3	atssbase 39290	. . . . . 6 ⊢ 𝐴 ⊆ (Base‘𝐾)
12		sstr 3958	. . . . . 6 ⊢ ((𝑋 ⊆ 𝐴 ∧ 𝐴 ⊆ (Base‘𝐾)) → 𝑋 ⊆ (Base‘𝐾))
13	11, 12	mpan2 691	. . . . 5 ⊢ (𝑋 ⊆ 𝐴 → 𝑋 ⊆ (Base‘𝐾))
14	10, 1	clatlubcl 18469	. . . . 5 ⊢ ((𝐾 ∈ CLat ∧ 𝑋 ⊆ (Base‘𝐾)) → ((lub‘𝐾)‘𝑋) ∈ (Base‘𝐾))
15	9, 13, 14	syl2an 596	. . . 4 ⊢ ((𝐾 ∈ HL ∧ 𝑋 ⊆ 𝐴) → ((lub‘𝐾)‘𝑋) ∈ (Base‘𝐾))
16	10, 2	opoccl 39194	. . . 4 ⊢ ((𝐾 ∈ OP ∧ ((lub‘𝐾)‘𝑋) ∈ (Base‘𝐾)) → ((oc‘𝐾)‘((lub‘𝐾)‘𝑋)) ∈ (Base‘𝐾))
17	8, 15, 16	syl2anc 584	. . 3 ⊢ ((𝐾 ∈ HL ∧ 𝑋 ⊆ 𝐴) → ((oc‘𝐾)‘((lub‘𝐾)‘𝑋)) ∈ (Base‘𝐾))
18		polsubcl.c	. . . 4 ⊢ 𝐶 = (PSubCl‘𝐾)
19	10, 4, 18	pmapsubclN 39947	. . 3 ⊢ ((𝐾 ∈ HL ∧ ((oc‘𝐾)‘((lub‘𝐾)‘𝑋)) ∈ (Base‘𝐾)) → ((pmap‘𝐾)‘((oc‘𝐾)‘((lub‘𝐾)‘𝑋))) ∈ 𝐶)
20	17, 19	syldan 591	. 2 ⊢ ((𝐾 ∈ HL ∧ 𝑋 ⊆ 𝐴) → ((pmap‘𝐾)‘((oc‘𝐾)‘((lub‘𝐾)‘𝑋))) ∈ 𝐶)
21	6, 20	eqeltrd 2829	1 ⊢ ((𝐾 ∈ HL ∧ 𝑋 ⊆ 𝐴) → ( ⊥ ‘𝑋) ∈ 𝐶)

Colors of variables: wff setvar class

Syntax hints: → wi 4 ∧ wa 395 = wceq 1540 ∈ wcel 2109 ⊆ wss 3917 ‘cfv 6514 Basecbs 17186 occoc 17235 lubclub 18277 CLatccla 18464 OPcops 39172 Atomscatm 39263 HLchlt 39350 pmapcpmap 39498 ⊥_𝑃cpolN 39903 PSubClcpscN 39935

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 1967 ax-7 2008 ax-8 2111 ax-9 2119 ax-10 2142 ax-11 2158 ax-12 2178 ax-ext 2702 ax-rep 5237 ax-sep 5254 ax-nul 5264 ax-pow 5323 ax-pr 5390 ax-un 7714

This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2534 df-eu 2563 df-clab 2709 df-cleq 2722 df-clel 2804 df-nfc 2879 df-ne 2927 df-ral 3046 df-rex 3055 df-rmo 3356 df-reu 3357 df-rab 3409 df-v 3452 df-sbc 3757 df-csb 3866 df-dif 3920 df-un 3922 df-in 3924 df-ss 3934 df-nul 4300 df-if 4492 df-pw 4568 df-sn 4593 df-pr 4595 df-op 4599 df-uni 4875 df-iun 4960 df-iin 4961 df-br 5111 df-opab 5173 df-mpt 5192 df-id 5536 df-xp 5647 df-rel 5648 df-cnv 5649 df-co 5650 df-dm 5651 df-rn 5652 df-res 5653 df-ima 5654 df-iota 6467 df-fun 6516 df-fn 6517 df-f 6518 df-f1 6519 df-fo 6520 df-f1o 6521 df-fv 6522 df-riota 7347 df-ov 7393 df-oprab 7394 df-proset 18262 df-poset 18281 df-plt 18296 df-lub 18312 df-glb 18313 df-join 18314 df-meet 18315 df-p0 18391 df-p1 18392 df-lat 18398 df-clat 18465 df-oposet 39176 df-ol 39178 df-oml 39179 df-covers 39266 df-ats 39267 df-atl 39298 df-cvlat 39322 df-hlat 39351 df-pmap 39505 df-polarityN 39904 df-psubclN 39936

This theorem is referenced by: osumcllem9N 39965 pexmidN 39970

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