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Mirrors > Home > MPE Home > Th. List > sdomn2lp | Structured version Visualization version GIF version |
Description: Strict dominance has no 2-cycle loops. (Contributed by NM, 6-May-2008.) |
Ref | Expression |
---|---|
sdomn2lp | ⊢ ¬ (𝐴 ≺ 𝐵 ∧ 𝐵 ≺ 𝐴) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | sdomirr 8850 | . 2 ⊢ ¬ 𝐴 ≺ 𝐴 | |
2 | sdomtr 8851 | . 2 ⊢ ((𝐴 ≺ 𝐵 ∧ 𝐵 ≺ 𝐴) → 𝐴 ≺ 𝐴) | |
3 | 1, 2 | mto 196 | 1 ⊢ ¬ (𝐴 ≺ 𝐵 ∧ 𝐵 ≺ 𝐴) |
Colors of variables: wff setvar class |
Syntax hints: ¬ wn 3 ∧ wa 395 class class class wbr 5070 ≺ csdm 8690 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1799 ax-4 1813 ax-5 1914 ax-6 1972 ax-7 2012 ax-8 2110 ax-9 2118 ax-10 2139 ax-11 2156 ax-12 2173 ax-ext 2709 ax-sep 5218 ax-nul 5225 ax-pow 5283 ax-pr 5347 ax-un 7566 |
This theorem depends on definitions: df-bi 206 df-an 396 df-or 844 df-3an 1087 df-tru 1542 df-fal 1552 df-ex 1784 df-nf 1788 df-sb 2069 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2817 df-nfc 2888 df-ral 3068 df-rex 3069 df-rab 3072 df-v 3424 df-dif 3886 df-un 3888 df-in 3890 df-ss 3900 df-nul 4254 df-if 4457 df-pw 4532 df-sn 4559 df-pr 4561 df-op 4565 df-uni 4837 df-br 5071 df-opab 5133 df-id 5480 df-xp 5586 df-rel 5587 df-cnv 5588 df-co 5589 df-dm 5590 df-rn 5591 df-res 5592 df-ima 5593 df-fun 6420 df-fn 6421 df-f 6422 df-f1 6423 df-fo 6424 df-f1o 6425 df-er 8456 df-en 8692 df-dom 8693 df-sdom 8694 |
This theorem is referenced by: (None) |
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