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Theorem soasym 5619
Description: Asymmetry law for strict orderings. (Contributed by Scott Fenton, 24-Nov-2021.)
Assertion
Ref Expression
soasym ((𝑅 Or 𝐴 ∧ (𝑋𝐴𝑌𝐴)) → (𝑋𝑅𝑌 → ¬ 𝑌𝑅𝑋))

Proof of Theorem soasym
StepHypRef Expression
1 sotric 5616 . 2 ((𝑅 Or 𝐴 ∧ (𝑋𝐴𝑌𝐴)) → (𝑋𝑅𝑌 ↔ ¬ (𝑋 = 𝑌𝑌𝑅𝑋)))
2 pm2.46 880 . 2 (¬ (𝑋 = 𝑌𝑌𝑅𝑋) → ¬ 𝑌𝑅𝑋)
31, 2biimtrdi 252 1 ((𝑅 Or 𝐴 ∧ (𝑋𝐴𝑌𝐴)) → (𝑋𝑅𝑌 → ¬ 𝑌𝑅𝑋))
Colors of variables: wff setvar class
Syntax hints:  ¬ wn 3  wi 4  wa 395  wo 844   = wceq 1540  wcel 2105   class class class wbr 5148   Or wor 5587
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 1912  ax-6 1970  ax-7 2010  ax-8 2107  ax-9 2115  ax-ext 2702
This theorem depends on definitions:  df-bi 206  df-an 396  df-or 845  df-3or 1087  df-3an 1088  df-tru 1543  df-fal 1553  df-ex 1781  df-sb 2067  df-clab 2709  df-cleq 2723  df-clel 2809  df-ral 3061  df-rab 3432  df-v 3475  df-dif 3951  df-un 3953  df-in 3955  df-ss 3965  df-nul 4323  df-if 4529  df-sn 4629  df-pr 4631  df-op 4635  df-br 5149  df-po 5588  df-so 5589
This theorem is referenced by:  fiinfg  9500  noresle  27543  nosupprefixmo  27546  noinfprefixmo  27547  nosupbnd1lem1  27554  nosupbnd1lem4  27557  nosupbnd2lem1  27561  nosupbnd2  27562  noinfbnd1lem1  27569  noinfbnd1lem4  27572  noinfbnd2lem1  27576  noinfbnd2  27577  sltasym  27594  or2expropbi  46203  prproropf1olem3  46632
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