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GIF version

Theorem relsdom 3279
Description: Strict dominance is a relation.
Assertion
Ref Expression
relsdom Rel ≺

Proof of Theorem relsdom
StepHypRef Expression
1 reldom 3278 . 2 Rel ≼
2 reldif 2492 . . 3 (Rel ≼ → Rel ( ≼ ∖ ≈ ))
3 df-sdom 3276 . . . 4 ≺ = ( ≼ ∖ ≈ )
4 releq 2477 . . . 4 ( ≺ = ( ≼ ∖ ≈ ) → (Rel ≺ ↔ Rel ( ≼ ∖ ≈ )))
53, 4ax-mp 6 . . 3 (Rel ≺ ↔ Rel ( ≼ ∖ ≈ ))
62, 5sylibr 175 . 2 (Rel ≼ → Rel ≺ )
71, 6ax-mp 6 1 Rel ≺
Colors of variables: wff set class
Syntax hints:   ↔ wb 127   = wceq 1091   ∖ cdif 1484  Rel wrel 2415   ≈ cen 3271   ≼ cdom 3272   ≺ csdm 3273
This theorem is referenced by:  sdomirr 3314  sdomex 3315  domnsym 3365  ensdomtr 3372  domsdomtr 3374  alephnbtwn2 3675  alephsucdom 3685
This theorem was proved from axioms:  ax-1 3  ax-2 4  ax-3 5  ax-mp 6  ax-4 673  ax-5 674  ax-6 675  ax-7 676  ax-gen 677  ax-8 798  ax-9 799  ax-10 800  ax-11 801  ax-12 802  ax-13 804  ax-14 805  ax-16 922  ax-17 925  ax-ext 1074  ax-rep 1075  ax-pow 1077
This theorem depends on definitions:  df-bi 128  df-or 197  df-an 198  df-ex 679  df-sb 853  df-clab 1093  df-cleq 1097  df-clel 1099  df-v 1349  df-dif 1489  df-un 1490  df-in 1491  df-ss 1492  df-nul 1708  df-pw 1799  df-sn 1811  df-pr 1812  df-op 1815  df-opab 2098  df-xp 2424  df-rel 2425  df-dom 3275  df-sdom 3276
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