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| Mirrors > Home > MPE Home > Th. List > sdomentr | Structured version Visualization version GIF version | ||
| Description: Transitivity of strict dominance and equinumerosity. Exercise 11 of [Suppes] p. 98. (Contributed by NM, 26-Oct-2003.) |
| Ref | Expression |
|---|---|
| sdomentr | ⊢ ((𝐴 ≺ 𝐵 ∧ 𝐵 ≈ 𝐶) → 𝐴 ≺ 𝐶) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | endom 9006 | . 2 ⊢ (𝐵 ≈ 𝐶 → 𝐵 ≼ 𝐶) | |
| 2 | sdomdomtr 9129 | . 2 ⊢ ((𝐴 ≺ 𝐵 ∧ 𝐵 ≼ 𝐶) → 𝐴 ≺ 𝐶) | |
| 3 | 1, 2 | sylan2 605 | 1 ⊢ ((𝐴 ≺ 𝐵 ∧ 𝐵 ≈ 𝐶) → 𝐴 ≺ 𝐶) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 401 class class class wbr 5103 ≈ cen 8970 ≼ cdom 8971 ≺ csdm 8972 |
| 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 2733 ax-sep 5249 ax-pow 5327 ax-pr 5391 ax-un 7751 |
| 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 2565 df-eu 2595 df-clab 2740 df-cleq 2753 df-clel 2836 df-nfc 2910 df-ral 3078 df-rex 3088 df-rab 3414 df-v 3453 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-nul 4280 df-if 4483 df-pw 4559 df-sn 4585 df-pr 4587 df-op 4591 df-uni 4868 df-br 5104 df-opab 5168 df-id 5546 df-xp 5657 df-rel 5658 df-cnv 5659 df-co 5660 df-dm 5661 df-rn 5662 df-res 5663 df-ima 5664 df-fun 6540 df-fn 6541 df-f 6542 df-f1 6543 df-fo 6544 df-f1o 6545 df-er 8717 df-en 8974 df-dom 8975 df-sdom 8976 |
| This theorem is used by: sdomen2 9141 unxpdom2 9251 sucxpdom 9252 fofinf1o 9321 sdomsdomcardi 10052 cardsdomel 10055 cardmin2 10080 alephnbtwn2 10151 pwsdompw 10281 infdif2 10287 fin23lem27 10406 axcclem 10535 numthcor 10572 sdomsdomcard 10644 pwcfsdom 10668 cfpwsdom 10669 inawinalem 10774 inatsk 10863 r1tskina 10867 tskuni 10868 rucALT 16398 iunmbl2 25878 dirith2 27855 kardsdom 35830 erdszelem10 35965 mblfinlem1 38575 pellex 43841 rp-isfinite6 44518 harval3 44538 |
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