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Mirrors > Home > MPE Home > Th. List > domtriord | Structured version Visualization version GIF version |
Description: Dominance is trichotomous in the restricted case of ordinal numbers. (Contributed by Jeff Hankins, 24-Oct-2009.) |
Ref | Expression |
---|---|
domtriord | ⊢ ((𝐴 ∈ On ∧ 𝐵 ∈ On) → (𝐴 ≼ 𝐵 ↔ ¬ 𝐵 ≺ 𝐴)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | sbth 8935 | . . . . 5 ⊢ ((𝐵 ≼ 𝐴 ∧ 𝐴 ≼ 𝐵) → 𝐵 ≈ 𝐴) | |
2 | 1 | expcom 414 | . . . 4 ⊢ (𝐴 ≼ 𝐵 → (𝐵 ≼ 𝐴 → 𝐵 ≈ 𝐴)) |
3 | 2 | a1i 11 | . . 3 ⊢ ((𝐴 ∈ On ∧ 𝐵 ∈ On) → (𝐴 ≼ 𝐵 → (𝐵 ≼ 𝐴 → 𝐵 ≈ 𝐴))) |
4 | iman 402 | . . . 4 ⊢ ((𝐵 ≼ 𝐴 → 𝐵 ≈ 𝐴) ↔ ¬ (𝐵 ≼ 𝐴 ∧ ¬ 𝐵 ≈ 𝐴)) | |
5 | brsdom 8813 | . . . 4 ⊢ (𝐵 ≺ 𝐴 ↔ (𝐵 ≼ 𝐴 ∧ ¬ 𝐵 ≈ 𝐴)) | |
6 | 4, 5 | xchbinxr 334 | . . 3 ⊢ ((𝐵 ≼ 𝐴 → 𝐵 ≈ 𝐴) ↔ ¬ 𝐵 ≺ 𝐴) |
7 | 3, 6 | syl6ib 250 | . 2 ⊢ ((𝐴 ∈ On ∧ 𝐵 ∈ On) → (𝐴 ≼ 𝐵 → ¬ 𝐵 ≺ 𝐴)) |
8 | onelss 6330 | . . . . . . . . . 10 ⊢ (𝐵 ∈ On → (𝐴 ∈ 𝐵 → 𝐴 ⊆ 𝐵)) | |
9 | ssdomg 8838 | . . . . . . . . . 10 ⊢ (𝐵 ∈ On → (𝐴 ⊆ 𝐵 → 𝐴 ≼ 𝐵)) | |
10 | 8, 9 | syld 47 | . . . . . . . . 9 ⊢ (𝐵 ∈ On → (𝐴 ∈ 𝐵 → 𝐴 ≼ 𝐵)) |
11 | 10 | adantl 482 | . . . . . . . 8 ⊢ ((𝐴 ∈ On ∧ 𝐵 ∈ On) → (𝐴 ∈ 𝐵 → 𝐴 ≼ 𝐵)) |
12 | 11 | con3d 152 | . . . . . . 7 ⊢ ((𝐴 ∈ On ∧ 𝐵 ∈ On) → (¬ 𝐴 ≼ 𝐵 → ¬ 𝐴 ∈ 𝐵)) |
13 | ontri1 6322 | . . . . . . . 8 ⊢ ((𝐵 ∈ On ∧ 𝐴 ∈ On) → (𝐵 ⊆ 𝐴 ↔ ¬ 𝐴 ∈ 𝐵)) | |
14 | 13 | ancoms 459 | . . . . . . 7 ⊢ ((𝐴 ∈ On ∧ 𝐵 ∈ On) → (𝐵 ⊆ 𝐴 ↔ ¬ 𝐴 ∈ 𝐵)) |
15 | 12, 14 | sylibrd 258 | . . . . . 6 ⊢ ((𝐴 ∈ On ∧ 𝐵 ∈ On) → (¬ 𝐴 ≼ 𝐵 → 𝐵 ⊆ 𝐴)) |
16 | ssdomg 8838 | . . . . . . 7 ⊢ (𝐴 ∈ On → (𝐵 ⊆ 𝐴 → 𝐵 ≼ 𝐴)) | |
17 | 16 | adantr 481 | . . . . . 6 ⊢ ((𝐴 ∈ On ∧ 𝐵 ∈ On) → (𝐵 ⊆ 𝐴 → 𝐵 ≼ 𝐴)) |
18 | 15, 17 | syld 47 | . . . . 5 ⊢ ((𝐴 ∈ On ∧ 𝐵 ∈ On) → (¬ 𝐴 ≼ 𝐵 → 𝐵 ≼ 𝐴)) |
19 | ensym 8841 | . . . . . . 7 ⊢ (𝐵 ≈ 𝐴 → 𝐴 ≈ 𝐵) | |
20 | endom 8817 | . . . . . . 7 ⊢ (𝐴 ≈ 𝐵 → 𝐴 ≼ 𝐵) | |
21 | 19, 20 | syl 17 | . . . . . 6 ⊢ (𝐵 ≈ 𝐴 → 𝐴 ≼ 𝐵) |
22 | 21 | con3i 154 | . . . . 5 ⊢ (¬ 𝐴 ≼ 𝐵 → ¬ 𝐵 ≈ 𝐴) |
23 | 18, 22 | jca2 514 | . . . 4 ⊢ ((𝐴 ∈ On ∧ 𝐵 ∈ On) → (¬ 𝐴 ≼ 𝐵 → (𝐵 ≼ 𝐴 ∧ ¬ 𝐵 ≈ 𝐴))) |
24 | 23, 5 | syl6ibr 251 | . . 3 ⊢ ((𝐴 ∈ On ∧ 𝐵 ∈ On) → (¬ 𝐴 ≼ 𝐵 → 𝐵 ≺ 𝐴)) |
25 | 24 | con1d 145 | . 2 ⊢ ((𝐴 ∈ On ∧ 𝐵 ∈ On) → (¬ 𝐵 ≺ 𝐴 → 𝐴 ≼ 𝐵)) |
26 | 7, 25 | impbid 211 | 1 ⊢ ((𝐴 ∈ On ∧ 𝐵 ∈ On) → (𝐴 ≼ 𝐵 ↔ ¬ 𝐵 ≺ 𝐴)) |
Colors of variables: wff setvar class |
Syntax hints: ¬ wn 3 → wi 4 ↔ wb 205 ∧ wa 396 ∈ wcel 2105 ⊆ wss 3897 class class class wbr 5087 Oncon0 6288 ≈ cen 8778 ≼ cdom 8779 ≺ csdm 8780 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1912 ax-6 1970 ax-7 2010 ax-8 2107 ax-9 2115 ax-10 2136 ax-11 2153 ax-12 2170 ax-ext 2708 ax-sep 5238 ax-nul 5245 ax-pow 5303 ax-pr 5367 ax-un 7628 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 845 df-3or 1087 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1781 df-nf 1785 df-sb 2067 df-mo 2539 df-eu 2568 df-clab 2715 df-cleq 2729 df-clel 2815 df-nfc 2887 df-ne 2942 df-ral 3063 df-rex 3072 df-rab 3405 df-v 3443 df-dif 3900 df-un 3902 df-in 3904 df-ss 3914 df-pss 3916 df-nul 4268 df-if 4472 df-pw 4547 df-sn 4572 df-pr 4574 df-op 4578 df-uni 4851 df-br 5088 df-opab 5150 df-tr 5205 df-id 5507 df-eprel 5513 df-po 5521 df-so 5522 df-fr 5562 df-we 5564 df-xp 5613 df-rel 5614 df-cnv 5615 df-co 5616 df-dm 5617 df-rn 5618 df-res 5619 df-ima 5620 df-ord 6291 df-on 6292 df-fun 6467 df-fn 6468 df-f 6469 df-f1 6470 df-fo 6471 df-f1o 6472 df-er 8546 df-en 8782 df-dom 8783 df-sdom 8784 |
This theorem is referenced by: sdomel 8966 cardsdomel 9803 alephord 9904 alephsucdom 9908 alephdom2 9916 |
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