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Mirrors > Home > MPE Home > Th. List > domsdomtr | Structured version Visualization version GIF version |
Description: Transitivity of dominance and strict dominance. Theorem 22(ii) of [Suppes] p. 97. (Contributed by NM, 10-Jun-1998.) (Revised by Mario Carneiro, 26-Apr-2015.) |
Ref | Expression |
---|---|
domsdomtr | ⊢ ((𝐴 ≼ 𝐵 ∧ 𝐵 ≺ 𝐶) → 𝐴 ≺ 𝐶) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | sdomdom 8768 | . . 3 ⊢ (𝐵 ≺ 𝐶 → 𝐵 ≼ 𝐶) | |
2 | domtr 8793 | . . 3 ⊢ ((𝐴 ≼ 𝐵 ∧ 𝐵 ≼ 𝐶) → 𝐴 ≼ 𝐶) | |
3 | 1, 2 | sylan2 593 | . 2 ⊢ ((𝐴 ≼ 𝐵 ∧ 𝐵 ≺ 𝐶) → 𝐴 ≼ 𝐶) |
4 | simpr 485 | . . 3 ⊢ ((𝐴 ≼ 𝐵 ∧ 𝐵 ≺ 𝐶) → 𝐵 ≺ 𝐶) | |
5 | ensym 8789 | . . . . . 6 ⊢ (𝐴 ≈ 𝐶 → 𝐶 ≈ 𝐴) | |
6 | simpl 483 | . . . . . 6 ⊢ ((𝐴 ≼ 𝐵 ∧ 𝐵 ≺ 𝐶) → 𝐴 ≼ 𝐵) | |
7 | endomtr 8798 | . . . . . 6 ⊢ ((𝐶 ≈ 𝐴 ∧ 𝐴 ≼ 𝐵) → 𝐶 ≼ 𝐵) | |
8 | 5, 6, 7 | syl2anr 597 | . . . . 5 ⊢ (((𝐴 ≼ 𝐵 ∧ 𝐵 ≺ 𝐶) ∧ 𝐴 ≈ 𝐶) → 𝐶 ≼ 𝐵) |
9 | domnsym 8886 | . . . . 5 ⊢ (𝐶 ≼ 𝐵 → ¬ 𝐵 ≺ 𝐶) | |
10 | 8, 9 | syl 17 | . . . 4 ⊢ (((𝐴 ≼ 𝐵 ∧ 𝐵 ≺ 𝐶) ∧ 𝐴 ≈ 𝐶) → ¬ 𝐵 ≺ 𝐶) |
11 | 10 | ex 413 | . . 3 ⊢ ((𝐴 ≼ 𝐵 ∧ 𝐵 ≺ 𝐶) → (𝐴 ≈ 𝐶 → ¬ 𝐵 ≺ 𝐶)) |
12 | 4, 11 | mt2d 136 | . 2 ⊢ ((𝐴 ≼ 𝐵 ∧ 𝐵 ≺ 𝐶) → ¬ 𝐴 ≈ 𝐶) |
13 | brsdom 8763 | . 2 ⊢ (𝐴 ≺ 𝐶 ↔ (𝐴 ≼ 𝐶 ∧ ¬ 𝐴 ≈ 𝐶)) | |
14 | 3, 12, 13 | sylanbrc 583 | 1 ⊢ ((𝐴 ≼ 𝐵 ∧ 𝐵 ≺ 𝐶) → 𝐴 ≺ 𝐶) |
Colors of variables: wff setvar class |
Syntax hints: ¬ wn 3 → wi 4 ∧ wa 396 class class class wbr 5074 ≈ cen 8730 ≼ cdom 8731 ≺ csdm 8732 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1798 ax-4 1812 ax-5 1913 ax-6 1971 ax-7 2011 ax-8 2108 ax-9 2116 ax-10 2137 ax-11 2154 ax-12 2171 ax-ext 2709 ax-sep 5223 ax-nul 5230 ax-pow 5288 ax-pr 5352 ax-un 7588 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 845 df-3an 1088 df-tru 1542 df-fal 1552 df-ex 1783 df-nf 1787 df-sb 2068 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2816 df-nfc 2889 df-ral 3069 df-rex 3070 df-rab 3073 df-v 3434 df-dif 3890 df-un 3892 df-in 3894 df-ss 3904 df-nul 4257 df-if 4460 df-pw 4535 df-sn 4562 df-pr 4564 df-op 4568 df-uni 4840 df-br 5075 df-opab 5137 df-id 5489 df-xp 5595 df-rel 5596 df-cnv 5597 df-co 5598 df-dm 5599 df-rn 5600 df-res 5601 df-ima 5602 df-fun 6435 df-fn 6436 df-f 6437 df-f1 6438 df-fo 6439 df-f1o 6440 df-er 8498 df-en 8734 df-dom 8735 df-sdom 8736 |
This theorem is referenced by: ensdomtr 8900 sdomtr 8902 2pwuninel 8919 card2on 9313 tskwe 9708 harval2 9755 prdom2 9762 infxpenlem 9769 alephsucdom 9835 pwsdompw 9960 infunsdom1 9969 fin34 10146 ondomon 10319 cardmin 10320 konigthlem 10324 gchpwdom 10426 gchina 10455 inar1 10531 tskord 10536 tskuni 10539 tskurn 10545 csdfil 23045 ctbssinf 35577 pibt2 35588 |
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