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| Mirrors > Home > MPE Home > Th. List > sdomdomtr | Structured version Visualization version GIF version | ||
| Description: Transitivity of strict dominance and dominance. Theorem 22(iii) of [Suppes] p. 97. (Contributed by NM, 26-Oct-2003.) (Revised by Mario Carneiro, 26-Apr-2015.) |
| Ref | Expression |
|---|---|
| sdomdomtr | ⊢ ((𝐴 ≺ 𝐵 ∧ 𝐵 ≼ 𝐶) → 𝐴 ≺ 𝐶) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | sdomdom 8985 | . . 3 ⊢ (𝐴 ≺ 𝐵 → 𝐴 ≼ 𝐵) | |
| 2 | domtr 9012 | . . 3 ⊢ ((𝐴 ≼ 𝐵 ∧ 𝐵 ≼ 𝐶) → 𝐴 ≼ 𝐶) | |
| 3 | 1, 2 | sylan 592 | . 2 ⊢ ((𝐴 ≺ 𝐵 ∧ 𝐵 ≼ 𝐶) → 𝐴 ≼ 𝐶) |
| 4 | simpl 488 | . . 3 ⊢ ((𝐴 ≺ 𝐵 ∧ 𝐵 ≼ 𝐶) → 𝐴 ≺ 𝐵) | |
| 5 | simpr 490 | . . . . . 6 ⊢ ((𝐴 ≺ 𝐵 ∧ 𝐵 ≼ 𝐶) → 𝐵 ≼ 𝐶) | |
| 6 | ensym 9008 | . . . . . 6 ⊢ (𝐴 ≈ 𝐶 → 𝐶 ≈ 𝐴) | |
| 7 | domentr 9018 | . . . . . 6 ⊢ ((𝐵 ≼ 𝐶 ∧ 𝐶 ≈ 𝐴) → 𝐵 ≼ 𝐴) | |
| 8 | 5, 6, 7 | syl2an 608 | . . . . 5 ⊢ (((𝐴 ≺ 𝐵 ∧ 𝐵 ≼ 𝐶) ∧ 𝐴 ≈ 𝐶) → 𝐵 ≼ 𝐴) |
| 9 | domnsym 9100 | . . . . 5 ⊢ (𝐵 ≼ 𝐴 → ¬ 𝐴 ≺ 𝐵) | |
| 10 | 8, 9 | syl 18 | . . . 4 ⊢ (((𝐴 ≺ 𝐵 ∧ 𝐵 ≼ 𝐶) ∧ 𝐴 ≈ 𝐶) → ¬ 𝐴 ≺ 𝐵) |
| 11 | 10 | ex 418 | . . 3 ⊢ ((𝐴 ≺ 𝐵 ∧ 𝐵 ≼ 𝐶) → (𝐴 ≈ 𝐶 → ¬ 𝐴 ≺ 𝐵)) |
| 12 | 4, 11 | mt2d 137 | . 2 ⊢ ((𝐴 ≺ 𝐵 ∧ 𝐵 ≼ 𝐶) → ¬ 𝐴 ≈ 𝐶) |
| 13 | brsdom 8979 | . 2 ⊢ (𝐴 ≺ 𝐶 ↔ (𝐴 ≼ 𝐶 ∧ ¬ 𝐴 ≈ 𝐶)) | |
| 14 | 3, 12, 13 | sylanbrc 595 | 1 ⊢ ((𝐴 ≺ 𝐵 ∧ 𝐵 ≼ 𝐶) → 𝐴 ≺ 𝐶) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ¬ wn 3 → wi 4 ∧ wa 401 class class class wbr 5102 ≈ cen 8948 ≼ cdom 8949 ≺ csdm 8950 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2213 ax-ext 2732 ax-sep 5248 ax-pow 5326 ax-pr 5390 ax-un 7734 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2564 df-eu 2594 df-clab 2739 df-cleq 2752 df-clel 2835 df-nfc 2909 df-ral 3077 df-rex 3087 df-rab 3413 df-v 3452 df-dif 3901 df-un 3903 df-in 3905 df-ss 3915 df-nul 4279 df-if 4482 df-pw 4558 df-sn 4584 df-pr 4586 df-op 4590 df-uni 4867 df-br 5103 df-opab 5167 df-id 5542 df-xp 5653 df-rel 5654 df-cnv 5655 df-co 5656 df-dm 5657 df-rn 5658 df-res 5659 df-ima 5660 df-fun 6529 df-fn 6530 df-f 6531 df-f1 6532 df-fo 6533 df-f1o 6534 df-er 8695 df-en 8952 df-dom 8953 df-sdom 8954 |
| This theorem is used by: sdomentr 9108 marypha1lem 9403 r1sdom 9756 infxpenlem 10063 infunsdom1 10261 fin56 10442 fodomb 10576 pwcfsdom 10639 cfpwsdom 10640 canthp1lem2 10709 gchpwdom 10726 gchhar 10735 gchina 10755 tsksdom 10812 tskpr 10826 tskcard 10837 gruina 10874 lindsenlbs 22118 domalom 38247 |
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