Theorem polcon3N 35992

Description: Contraposition law for polarity. Remark in [Holland95] p. 223. (Contributed by NM, 23-Mar-2012.) (New usage is discouraged.)

Hypotheses

Ref	Expression
2polss.a	⊢ 𝐴 = (Atoms‘𝐾)
2polss.p	⊢ ⊥ = (⊥𝑃‘𝐾)

Assertion

Ref	Expression
polcon3N	⊢ ((𝐾 ∈ HL ∧ 𝑌 ⊆ 𝐴 ∧ 𝑋 ⊆ 𝑌) → ( ⊥ ‘𝑌) ⊆ ( ⊥ ‘𝑋))

Proof of Theorem polcon3N

Dummy variable 𝑝 is distinct from all other variables.

Step	Hyp	Ref	Expression
1		simp3 1174	. . 3 ⊢ ((𝐾 ∈ HL ∧ 𝑌 ⊆ 𝐴 ∧ 𝑋 ⊆ 𝑌) → 𝑋 ⊆ 𝑌)
2		iinss1 4753	. . 3 ⊢ (𝑋 ⊆ 𝑌 → ∩ 𝑝 ∈ 𝑌 ((pmap‘𝐾)‘((oc‘𝐾)‘𝑝)) ⊆ ∩ 𝑝 ∈ 𝑋 ((pmap‘𝐾)‘((oc‘𝐾)‘𝑝)))
3		sslin 4063	. . 3 ⊢ (∩ 𝑝 ∈ 𝑌 ((pmap‘𝐾)‘((oc‘𝐾)‘𝑝)) ⊆ ∩ 𝑝 ∈ 𝑋 ((pmap‘𝐾)‘((oc‘𝐾)‘𝑝)) → (𝐴 ∩ ∩ 𝑝 ∈ 𝑌 ((pmap‘𝐾)‘((oc‘𝐾)‘𝑝))) ⊆ (𝐴 ∩ ∩ 𝑝 ∈ 𝑋 ((pmap‘𝐾)‘((oc‘𝐾)‘𝑝))))
4	1, 2, 3	3syl 18	. 2 ⊢ ((𝐾 ∈ HL ∧ 𝑌 ⊆ 𝐴 ∧ 𝑋 ⊆ 𝑌) → (𝐴 ∩ ∩ 𝑝 ∈ 𝑌 ((pmap‘𝐾)‘((oc‘𝐾)‘𝑝))) ⊆ (𝐴 ∩ ∩ 𝑝 ∈ 𝑋 ((pmap‘𝐾)‘((oc‘𝐾)‘𝑝))))
5		eqid 2825	. . . 4 ⊢ (oc‘𝐾) = (oc‘𝐾)
6		2polss.a	. . . 4 ⊢ 𝐴 = (Atoms‘𝐾)
7		eqid 2825	. . . 4 ⊢ (pmap‘𝐾) = (pmap‘𝐾)
8		2polss.p	. . . 4 ⊢ ⊥ = (⊥𝑃‘𝐾)
9	5, 6, 7, 8	polvalN 35980	. . 3 ⊢ ((𝐾 ∈ HL ∧ 𝑌 ⊆ 𝐴) → ( ⊥ ‘𝑌) = (𝐴 ∩ ∩ 𝑝 ∈ 𝑌 ((pmap‘𝐾)‘((oc‘𝐾)‘𝑝))))
10	9	3adant3 1168	. 2 ⊢ ((𝐾 ∈ HL ∧ 𝑌 ⊆ 𝐴 ∧ 𝑋 ⊆ 𝑌) → ( ⊥ ‘𝑌) = (𝐴 ∩ ∩ 𝑝 ∈ 𝑌 ((pmap‘𝐾)‘((oc‘𝐾)‘𝑝))))
11		simp1 1172	. . 3 ⊢ ((𝐾 ∈ HL ∧ 𝑌 ⊆ 𝐴 ∧ 𝑋 ⊆ 𝑌) → 𝐾 ∈ HL)
12		simp2 1173	. . . 4 ⊢ ((𝐾 ∈ HL ∧ 𝑌 ⊆ 𝐴 ∧ 𝑋 ⊆ 𝑌) → 𝑌 ⊆ 𝐴)
13	1, 12	sstrd 3837	. . 3 ⊢ ((𝐾 ∈ HL ∧ 𝑌 ⊆ 𝐴 ∧ 𝑋 ⊆ 𝑌) → 𝑋 ⊆ 𝐴)
14	5, 6, 7, 8	polvalN 35980	. . 3 ⊢ ((𝐾 ∈ HL ∧ 𝑋 ⊆ 𝐴) → ( ⊥ ‘𝑋) = (𝐴 ∩ ∩ 𝑝 ∈ 𝑋 ((pmap‘𝐾)‘((oc‘𝐾)‘𝑝))))
15	11, 13, 14	syl2anc 581	. 2 ⊢ ((𝐾 ∈ HL ∧ 𝑌 ⊆ 𝐴 ∧ 𝑋 ⊆ 𝑌) → ( ⊥ ‘𝑋) = (𝐴 ∩ ∩ 𝑝 ∈ 𝑋 ((pmap‘𝐾)‘((oc‘𝐾)‘𝑝))))
16	4, 10, 15	3sstr4d 3873	1 ⊢ ((𝐾 ∈ HL ∧ 𝑌 ⊆ 𝐴 ∧ 𝑋 ⊆ 𝑌) → ( ⊥ ‘𝑌) ⊆ ( ⊥ ‘𝑋))

Syntax hints:   → wi 4   ∧ w3a 1113   = wceq 1658   ∈ wcel 2166   ∩ cin 3797   ⊆ wss 3798  ∩ ciin 4741  ‘cfv 6123  occoc 16313  Atomscatm 35338  HLchlt 35425  pmapcpmap 35572  ⊥_𝑃cpolN 35977

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1896  ax-4 1910  ax-5 2011  ax-6 2077  ax-7 2114  ax-9 2175  ax-10 2194  ax-11 2209  ax-12 2222  ax-13 2391  ax-ext 2803  ax-rep 4994  ax-sep 5005  ax-nul 5013  ax-pow 5065  ax-pr 5127

This theorem depends on definitions:  df-bi 199  df-an 387  df-or 881  df-3an 1115  df-tru 1662  df-ex 1881  df-nf 1885  df-sb 2070  df-mo 2605  df-eu 2640  df-clab 2812  df-cleq 2818  df-clel 2821  df-nfc 2958  df-ne 3000  df-ral 3122  df-rex 3123  df-reu 3124  df-rab 3126  df-v 3416  df-sbc 3663  df-csb 3758  df-dif 3801  df-un 3803  df-in 3805  df-ss 3812  df-nul 4145  df-if 4307  df-pw 4380  df-sn 4398  df-pr 4400  df-op 4404  df-uni 4659  df-iun 4742  df-iin 4743  df-br 4874  df-opab 4936  df-mpt 4953  df-id 5250  df-xp 5348  df-rel 5349  df-cnv 5350  df-co 5351  df-dm 5352  df-rn 5353  df-res 5354  df-ima 5355  df-iota 6086  df-fun 6125  df-fn 6126  df-f 6127  df-f1 6128  df-fo 6129  df-f1o 6130  df-fv 6131  df-polarityN 35978

This theorem is referenced by:  2polcon4bN  35993  polcon2N  35994  paddunN  36002