Theorem opococ 39314

Description: Double negative law for orthoposets. (ococ 31388 analog.) (Contributed by NM, 13-Sep-2011.)

Hypotheses

Ref	Expression
opoccl.b	⊢ 𝐵 = (Base‘𝐾)
opoccl.o	⊢ ⊥ = (oc‘𝐾)

Assertion

Ref	Expression
opococ	⊢ ((𝐾 ∈ OP ∧ 𝑋 ∈ 𝐵) → ( ⊥ ‘( ⊥ ‘𝑋)) = 𝑋)

Proof of Theorem opococ

Step	Hyp	Ref	Expression
1		opoccl.b	. . . . 5 ⊢ 𝐵 = (Base‘𝐾)
2		eqid 2733	. . . . 5 ⊢ (le‘𝐾) = (le‘𝐾)
3		opoccl.o	. . . . 5 ⊢ ⊥ = (oc‘𝐾)
4		eqid 2733	. . . . 5 ⊢ (join‘𝐾) = (join‘𝐾)
5		eqid 2733	. . . . 5 ⊢ (meet‘𝐾) = (meet‘𝐾)
6		eqid 2733	. . . . 5 ⊢ (0.‘𝐾) = (0.‘𝐾)
7		eqid 2733	. . . . 5 ⊢ (1.‘𝐾) = (1.‘𝐾)
8	1, 2, 3, 4, 5, 6, 7	oposlem 39301	. . . 4 ⊢ ((𝐾 ∈ OP ∧ 𝑋 ∈ 𝐵 ∧ 𝑋 ∈ 𝐵) → ((( ⊥ ‘𝑋) ∈ 𝐵 ∧ ( ⊥ ‘( ⊥ ‘𝑋)) = 𝑋 ∧ (𝑋(le‘𝐾)𝑋 → ( ⊥ ‘𝑋)(le‘𝐾)( ⊥ ‘𝑋))) ∧ (𝑋(join‘𝐾)( ⊥ ‘𝑋)) = (1.‘𝐾) ∧ (𝑋(meet‘𝐾)( ⊥ ‘𝑋)) = (0.‘𝐾)))
9	8	3anidm23 1423	. . 3 ⊢ ((𝐾 ∈ OP ∧ 𝑋 ∈ 𝐵) → ((( ⊥ ‘𝑋) ∈ 𝐵 ∧ ( ⊥ ‘( ⊥ ‘𝑋)) = 𝑋 ∧ (𝑋(le‘𝐾)𝑋 → ( ⊥ ‘𝑋)(le‘𝐾)( ⊥ ‘𝑋))) ∧ (𝑋(join‘𝐾)( ⊥ ‘𝑋)) = (1.‘𝐾) ∧ (𝑋(meet‘𝐾)( ⊥ ‘𝑋)) = (0.‘𝐾)))
10	9	simp1d 1142	. 2 ⊢ ((𝐾 ∈ OP ∧ 𝑋 ∈ 𝐵) → (( ⊥ ‘𝑋) ∈ 𝐵 ∧ ( ⊥ ‘( ⊥ ‘𝑋)) = 𝑋 ∧ (𝑋(le‘𝐾)𝑋 → ( ⊥ ‘𝑋)(le‘𝐾)( ⊥ ‘𝑋))))
11	10	simp2d 1143	1 ⊢ ((𝐾 ∈ OP ∧ 𝑋 ∈ 𝐵) → ( ⊥ ‘( ⊥ ‘𝑋)) = 𝑋)

Syntax hints:   → wi 4   ∧ wa 395   ∧ w3a 1086   = wceq 1541   ∈ wcel 2113   class class class wbr 5093  ‘cfv 6486  (class class class)co 7352  Basecbs 17122  lecple 17170  occoc 17171  joincjn 18219  meetcmee 18220  0.cp0 18329  1.cp1 18330  OPcops 39291

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1796  ax-4 1810  ax-5 1911  ax-6 1968  ax-7 2009  ax-8 2115  ax-9 2123  ax-ext 2705  ax-nul 5246

This theorem depends on definitions:  df-bi 207  df-an 396  df-or 848  df-3an 1088  df-tru 1544  df-fal 1554  df-ex 1781  df-sb 2068  df-clab 2712  df-cleq 2725  df-clel 2808  df-ne 2930  df-ral 3049  df-rab 3397  df-v 3439  df-dif 3901  df-un 3903  df-ss 3915  df-nul 4283  df-if 4475  df-sn 4576  df-pr 4578  df-op 4582  df-uni 4859  df-br 5094  df-dm 5629  df-iota 6442  df-fv 6494  df-ov 7355  df-oposet 39295

This theorem is referenced by:  opcon3b  39315  opcon2b  39316  oplecon3b  39319  oplecon1b  39320  opltcon1b  39324  opltcon2b  39325  oldmm2  39337  oldmm3N  39338  oldmm4  39339  oldmj1  39340  oldmj2  39341  oldmj3  39342  oldmj4  39343  olm11  39346  omllaw4  39365  cmt2N  39369  glbconN  39496  1cvratex  39592  1cvrjat  39594  polval2N  40025  2polpmapN  40032  2polvalN  40033  2polatN  40051  lhpoc2N  40134  doch2val2  41483  dochocss  41485  dochoc  41486