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Theorem opnoncon 35016
Description: Law of contradiction for orthoposets. (chocin 28684 analog.) (Contributed by NM, 13-Sep-2011.)
Hypotheses
Ref Expression
opnoncon.b 𝐵 = (Base‘𝐾)
opnoncon.o = (oc‘𝐾)
opnoncon.m = (meet‘𝐾)
opnoncon.z 0 = (0.‘𝐾)
Assertion
Ref Expression
opnoncon ((𝐾 ∈ OP ∧ 𝑋𝐵) → (𝑋 ( 𝑋)) = 0 )

Proof of Theorem opnoncon
StepHypRef Expression
1 opnoncon.b . . . 4 𝐵 = (Base‘𝐾)
2 eqid 2760 . . . 4 (le‘𝐾) = (le‘𝐾)
3 opnoncon.o . . . 4 = (oc‘𝐾)
4 eqid 2760 . . . 4 (join‘𝐾) = (join‘𝐾)
5 opnoncon.m . . . 4 = (meet‘𝐾)
6 opnoncon.z . . . 4 0 = (0.‘𝐾)
7 eqid 2760 . . . 4 (1.‘𝐾) = (1.‘𝐾)
81, 2, 3, 4, 5, 6, 7oposlem 34990 . . 3 ((𝐾 ∈ OP ∧ 𝑋𝐵𝑋𝐵) → ((( 𝑋) ∈ 𝐵 ∧ ( ‘( 𝑋)) = 𝑋 ∧ (𝑋(le‘𝐾)𝑋 → ( 𝑋)(le‘𝐾)( 𝑋))) ∧ (𝑋(join‘𝐾)( 𝑋)) = (1.‘𝐾) ∧ (𝑋 ( 𝑋)) = 0 ))
983anidm23 1532 . 2 ((𝐾 ∈ OP ∧ 𝑋𝐵) → ((( 𝑋) ∈ 𝐵 ∧ ( ‘( 𝑋)) = 𝑋 ∧ (𝑋(le‘𝐾)𝑋 → ( 𝑋)(le‘𝐾)( 𝑋))) ∧ (𝑋(join‘𝐾)( 𝑋)) = (1.‘𝐾) ∧ (𝑋 ( 𝑋)) = 0 ))
109simp3d 1139 1 ((𝐾 ∈ OP ∧ 𝑋𝐵) → (𝑋 ( 𝑋)) = 0 )
Colors of variables: wff setvar class
Syntax hints:  wi 4  wa 383  w3a 1072   = wceq 1632  wcel 2139   class class class wbr 4804  cfv 6049  (class class class)co 6814  Basecbs 16079  lecple 16170  occoc 16171  joincjn 17165  meetcmee 17166  0.cp0 17258  1.cp1 17259  OPcops 34980
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1871  ax-4 1886  ax-5 1988  ax-6 2054  ax-7 2090  ax-9 2148  ax-10 2168  ax-11 2183  ax-12 2196  ax-13 2391  ax-ext 2740  ax-nul 4941
This theorem depends on definitions:  df-bi 197  df-or 384  df-an 385  df-3an 1074  df-tru 1635  df-ex 1854  df-nf 1859  df-sb 2047  df-eu 2611  df-clab 2747  df-cleq 2753  df-clel 2756  df-nfc 2891  df-ral 3055  df-rex 3056  df-rab 3059  df-v 3342  df-sbc 3577  df-dif 3718  df-un 3720  df-in 3722  df-ss 3729  df-nul 4059  df-if 4231  df-sn 4322  df-pr 4324  df-op 4328  df-uni 4589  df-br 4805  df-dm 5276  df-iota 6012  df-fv 6057  df-ov 6817  df-oposet 34984
This theorem is referenced by:  omlfh1N  35066  omlspjN  35069  atlatmstc  35127  pnonsingN  35740  lhpocnle  35823  dochnoncon  37200
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