MPE Home Metamath Proof Explorer < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  MPE Home  >  Th. List  >  sdomirr Structured version   Visualization version   GIF version

Theorem sdomirr 9054
Description: Strict dominance is irreflexive. Theorem 21(i) of [Suppes] p. 97. (Contributed by NM, 4-Jun-1998.)
Assertion
Ref Expression
sdomirr ¬ 𝐴𝐴

Proof of Theorem sdomirr
StepHypRef Expression
1 sdomnen 8930 . . 3 (𝐴𝐴 → ¬ 𝐴𝐴)
2 enrefg 8933 . . 3 (𝐴 ∈ V → 𝐴𝐴)
31, 2nsyl3 138 . 2 (𝐴 ∈ V → ¬ 𝐴𝐴)
4 relsdom 8902 . . . 4 Rel ≺
54brrelex1i 5688 . . 3 (𝐴𝐴𝐴 ∈ V)
65con3i 154 . 2 𝐴 ∈ V → ¬ 𝐴𝐴)
73, 6pm2.61i 182 1 ¬ 𝐴𝐴
Colors of variables: wff setvar class
Syntax hints:  ¬ wn 3  wcel 2114  Vcvv 3442   class class class wbr 5100  cen 8892  csdm 8894
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1797  ax-4 1811  ax-5 1912  ax-6 1969  ax-7 2010  ax-8 2116  ax-9 2124  ax-ext 2709  ax-sep 5243  ax-pow 5312  ax-pr 5379  ax-un 7690
This theorem depends on definitions:  df-bi 207  df-an 396  df-or 849  df-3an 1089  df-tru 1545  df-fal 1555  df-ex 1782  df-sb 2069  df-clab 2716  df-cleq 2729  df-clel 2812  df-ral 3053  df-rex 3063  df-rab 3402  df-v 3444  df-dif 3906  df-un 3908  df-in 3910  df-ss 3920  df-nul 4288  df-if 4482  df-pw 4558  df-sn 4583  df-pr 4585  df-op 4589  df-uni 4866  df-br 5101  df-opab 5163  df-id 5527  df-xp 5638  df-rel 5639  df-cnv 5640  df-co 5641  df-dm 5642  df-rn 5643  df-res 5644  df-ima 5645  df-fun 6502  df-fn 6503  df-f 6504  df-f1 6505  df-fo 6506  df-f1o 6507  df-en 8896  df-dom 8897  df-sdom 8898
This theorem is referenced by:  sdomn2lp  9056  2pwuninel  9072  2pwne  9073  r111  9699  alephval2  10495  alephom  10508  csdfil  23850
  Copyright terms: Public domain W3C validator