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Mirrors > Home > MPE Home > Th. List > alephdom2 | Structured version Visualization version GIF version |
Description: A dominated initial ordinal is included. (Contributed by Jeff Hankins, 24-Oct-2009.) |
Ref | Expression |
---|---|
alephdom2 | ⊢ ((𝐴 ∈ On ∧ 𝐵 ∈ On) → ((ℵ‘𝐴) ⊆ 𝐵 ↔ (ℵ‘𝐴) ≼ 𝐵)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | alephsdom 10076 | . . . 4 ⊢ ((𝐵 ∈ On ∧ 𝐴 ∈ On) → (𝐵 ∈ (ℵ‘𝐴) ↔ 𝐵 ≺ (ℵ‘𝐴))) | |
2 | 1 | ancoms 458 | . . 3 ⊢ ((𝐴 ∈ On ∧ 𝐵 ∈ On) → (𝐵 ∈ (ℵ‘𝐴) ↔ 𝐵 ≺ (ℵ‘𝐴))) |
3 | 2 | notbid 318 | . 2 ⊢ ((𝐴 ∈ On ∧ 𝐵 ∈ On) → (¬ 𝐵 ∈ (ℵ‘𝐴) ↔ ¬ 𝐵 ≺ (ℵ‘𝐴))) |
4 | alephon 10059 | . . . . 5 ⊢ (ℵ‘𝐴) ∈ On | |
5 | 4 | onordi 6465 | . . . 4 ⊢ Ord (ℵ‘𝐴) |
6 | eloni 6364 | . . . 4 ⊢ (𝐵 ∈ On → Ord 𝐵) | |
7 | ordtri1 6387 | . . . 4 ⊢ ((Ord (ℵ‘𝐴) ∧ Ord 𝐵) → ((ℵ‘𝐴) ⊆ 𝐵 ↔ ¬ 𝐵 ∈ (ℵ‘𝐴))) | |
8 | 5, 6, 7 | sylancr 586 | . . 3 ⊢ (𝐵 ∈ On → ((ℵ‘𝐴) ⊆ 𝐵 ↔ ¬ 𝐵 ∈ (ℵ‘𝐴))) |
9 | 8 | adantl 481 | . 2 ⊢ ((𝐴 ∈ On ∧ 𝐵 ∈ On) → ((ℵ‘𝐴) ⊆ 𝐵 ↔ ¬ 𝐵 ∈ (ℵ‘𝐴))) |
10 | domtriord 9118 | . . . 4 ⊢ (((ℵ‘𝐴) ∈ On ∧ 𝐵 ∈ On) → ((ℵ‘𝐴) ≼ 𝐵 ↔ ¬ 𝐵 ≺ (ℵ‘𝐴))) | |
11 | 4, 10 | mpan 687 | . . 3 ⊢ (𝐵 ∈ On → ((ℵ‘𝐴) ≼ 𝐵 ↔ ¬ 𝐵 ≺ (ℵ‘𝐴))) |
12 | 11 | adantl 481 | . 2 ⊢ ((𝐴 ∈ On ∧ 𝐵 ∈ On) → ((ℵ‘𝐴) ≼ 𝐵 ↔ ¬ 𝐵 ≺ (ℵ‘𝐴))) |
13 | 3, 9, 12 | 3bitr4d 311 | 1 ⊢ ((𝐴 ∈ On ∧ 𝐵 ∈ On) → ((ℵ‘𝐴) ⊆ 𝐵 ↔ (ℵ‘𝐴) ≼ 𝐵)) |
Colors of variables: wff setvar class |
Syntax hints: ¬ wn 3 → wi 4 ↔ wb 205 ∧ wa 395 ∈ wcel 2098 ⊆ wss 3940 class class class wbr 5138 Ord word 6353 Oncon0 6354 ‘cfv 6533 ≼ cdom 8932 ≺ csdm 8933 ℵcale 9926 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1789 ax-4 1803 ax-5 1905 ax-6 1963 ax-7 2003 ax-8 2100 ax-9 2108 ax-10 2129 ax-11 2146 ax-12 2163 ax-ext 2695 ax-rep 5275 ax-sep 5289 ax-nul 5296 ax-pow 5353 ax-pr 5417 ax-un 7718 ax-inf2 9631 |
This theorem depends on definitions: df-bi 206 df-an 396 df-or 845 df-3or 1085 df-3an 1086 df-tru 1536 df-fal 1546 df-ex 1774 df-nf 1778 df-sb 2060 df-mo 2526 df-eu 2555 df-clab 2702 df-cleq 2716 df-clel 2802 df-nfc 2877 df-ne 2933 df-ral 3054 df-rex 3063 df-rmo 3368 df-reu 3369 df-rab 3425 df-v 3468 df-sbc 3770 df-csb 3886 df-dif 3943 df-un 3945 df-in 3947 df-ss 3957 df-pss 3959 df-nul 4315 df-if 4521 df-pw 4596 df-sn 4621 df-pr 4623 df-op 4627 df-uni 4900 df-int 4941 df-iun 4989 df-br 5139 df-opab 5201 df-mpt 5222 df-tr 5256 df-id 5564 df-eprel 5570 df-po 5578 df-so 5579 df-fr 5621 df-se 5622 df-we 5623 df-xp 5672 df-rel 5673 df-cnv 5674 df-co 5675 df-dm 5676 df-rn 5677 df-res 5678 df-ima 5679 df-pred 6290 df-ord 6357 df-on 6358 df-lim 6359 df-suc 6360 df-iota 6485 df-fun 6535 df-fn 6536 df-f 6537 df-f1 6538 df-fo 6539 df-f1o 6540 df-fv 6541 df-isom 6542 df-riota 7357 df-ov 7404 df-om 7849 df-2nd 7969 df-frecs 8261 df-wrecs 8292 df-recs 8366 df-rdg 8405 df-1o 8461 df-er 8698 df-en 8935 df-dom 8936 df-sdom 8937 df-fin 8938 df-oi 9500 df-har 9547 df-card 9929 df-aleph 9930 |
This theorem is referenced by: (None) |
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