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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 8963 | . . 3 ⊢ (𝐵 ≺ 𝐶 → 𝐵 ≼ 𝐶) | |
| 2 | domtr 8990 | . . 3 ⊢ ((𝐴 ≼ 𝐵 ∧ 𝐵 ≼ 𝐶) → 𝐴 ≼ 𝐶) | |
| 3 | 1, 2 | sylan2 602 | . 2 ⊢ ((𝐴 ≼ 𝐵 ∧ 𝐵 ≺ 𝐶) → 𝐴 ≼ 𝐶) |
| 4 | simpr 488 | . . 3 ⊢ ((𝐴 ≼ 𝐵 ∧ 𝐵 ≺ 𝐶) → 𝐵 ≺ 𝐶) | |
| 5 | ensym 8986 | . . . . . 6 ⊢ (𝐴 ≈ 𝐶 → 𝐶 ≈ 𝐴) | |
| 6 | simpl 486 | . . . . . 6 ⊢ ((𝐴 ≼ 𝐵 ∧ 𝐵 ≺ 𝐶) → 𝐴 ≼ 𝐵) | |
| 7 | endomtr 8995 | . . . . . 6 ⊢ ((𝐶 ≈ 𝐴 ∧ 𝐴 ≼ 𝐵) → 𝐶 ≼ 𝐵) | |
| 8 | 5, 6, 7 | syl2anr 606 | . . . . 5 ⊢ (((𝐴 ≼ 𝐵 ∧ 𝐵 ≺ 𝐶) ∧ 𝐴 ≈ 𝐶) → 𝐶 ≼ 𝐵) |
| 9 | domnsym 9077 | . . . . 5 ⊢ (𝐶 ≼ 𝐵 → ¬ 𝐵 ≺ 𝐶) | |
| 10 | 8, 9 | syl 17 | . . . 4 ⊢ (((𝐴 ≼ 𝐵 ∧ 𝐵 ≺ 𝐶) ∧ 𝐴 ≈ 𝐶) → ¬ 𝐵 ≺ 𝐶) |
| 11 | 10 | ex 416 | . . 3 ⊢ ((𝐴 ≼ 𝐵 ∧ 𝐵 ≺ 𝐶) → (𝐴 ≈ 𝐶 → ¬ 𝐵 ≺ 𝐶)) |
| 12 | 4, 11 | mt2d 136 | . 2 ⊢ ((𝐴 ≼ 𝐵 ∧ 𝐵 ≺ 𝐶) → ¬ 𝐴 ≈ 𝐶) |
| 13 | brsdom 8957 | . 2 ⊢ (𝐴 ≺ 𝐶 ↔ (𝐴 ≼ 𝐶 ∧ ¬ 𝐴 ≈ 𝐶)) | |
| 14 | 3, 12, 13 | sylanbrc 592 | 1 ⊢ ((𝐴 ≼ 𝐵 ∧ 𝐵 ≺ 𝐶) → 𝐴 ≺ 𝐶) |
| Colors of variables: wff setvar class |
| Syntax hints: ¬ wn 3 → wi 4 ∧ wa 399 class class class wbr 5102 ≈ cen 8926 ≼ cdom 8927 ≺ csdm 8928 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1817 ax-4 1831 ax-5 1932 ax-6 1989 ax-7 2030 ax-8 2146 ax-9 2154 ax-10 2177 ax-11 2193 ax-12 2214 ax-ext 2736 ax-sep 5248 ax-pow 5324 ax-pr 5392 ax-un 7720 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-3an 1101 df-tru 1565 df-fal 1575 df-ex 1802 df-nf 1806 df-sb 2093 df-mo 2568 df-eu 2598 df-clab 2743 df-cleq 2756 df-clel 2839 df-nfc 2913 df-ral 3079 df-rex 3089 df-rab 3417 df-v 3458 df-dif 3909 df-un 3911 df-in 3913 df-ss 3923 df-nul 4288 df-if 4483 df-pw 4559 df-sn 4585 df-pr 4587 df-op 4591 df-uni 4868 df-br 5103 df-opab 5165 df-id 5544 df-xp 5655 df-rel 5656 df-cnv 5657 df-co 5658 df-dm 5659 df-rn 5660 df-res 5661 df-ima 5662 df-fun 6525 df-fn 6526 df-f 6527 df-f1 6528 df-fo 6529 df-f1o 6530 df-er 8680 df-en 8930 df-dom 8931 df-sdom 8932 |
| This theorem is referenced by: ensdomtr 9087 sdomtr 9089 2pwuninel 9106 card2on 9504 tskwe 9910 harval2 9957 prdom2 9964 infxpenlem 9971 alephsucdom 10037 pwsdompw 10161 infunsdom1 10170 fin34 10349 ondomon 10522 cardmin 10523 konigthlem 10528 gchpwdom 10630 gchina 10659 inar1 10735 tskord 10740 tskuni 10743 tskurn 10749 csdfil 23956 ctbssinf 37905 pibt2 37916 |
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