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Theorem sdomn2lp 9040
Description: Strict dominance has no 2-cycle loops. (Contributed by NM, 6-May-2008.)
Assertion
Ref Expression
sdomn2lp ¬ (𝐴𝐵𝐵𝐴)

Proof of Theorem sdomn2lp
StepHypRef Expression
1 sdomirr 9038 . 2 ¬ 𝐴𝐴
2 sdomtr 9039 . 2 ((𝐴𝐵𝐵𝐴) → 𝐴𝐴)
31, 2mto 197 1 ¬ (𝐴𝐵𝐵𝐴)
Colors of variables: wff setvar class
Syntax hints:  ¬ wn 3  wa 395   class class class wbr 5095  csdm 8878
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 2701  ax-sep 5238  ax-nul 5248  ax-pow 5307  ax-pr 5374  ax-un 7675
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 2533  df-eu 2562  df-clab 2708  df-cleq 2721  df-clel 2803  df-nfc 2878  df-ral 3045  df-rex 3054  df-rab 3397  df-v 3440  df-dif 3908  df-un 3910  df-in 3912  df-ss 3922  df-nul 4287  df-if 4479  df-pw 4555  df-sn 4580  df-pr 4582  df-op 4586  df-uni 4862  df-br 5096  df-opab 5158  df-id 5518  df-xp 5629  df-rel 5630  df-cnv 5631  df-co 5632  df-dm 5633  df-rn 5634  df-res 5635  df-ima 5636  df-fun 6488  df-fn 6489  df-f 6490  df-f1 6491  df-fo 6492  df-f1o 6493  df-er 8632  df-en 8880  df-dom 8881  df-sdom 8882
This theorem is referenced by: (None)
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