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Mirrors > Home > MPE Home > Th. List > alephsucdom | Structured version Visualization version GIF version |
Description: A set dominated by an aleph is strictly dominated by its successor aleph and vice-versa. (Contributed by NM, 3-Nov-2003.) (Revised by Mario Carneiro, 2-Feb-2013.) |
Ref | Expression |
---|---|
alephsucdom | ⊢ (𝐵 ∈ On → (𝐴 ≼ (ℵ‘𝐵) ↔ 𝐴 ≺ (ℵ‘suc 𝐵))) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | alephordilem1 9829 | . . 3 ⊢ (𝐵 ∈ On → (ℵ‘𝐵) ≺ (ℵ‘suc 𝐵)) | |
2 | domsdomtr 8899 | . . . 4 ⊢ ((𝐴 ≼ (ℵ‘𝐵) ∧ (ℵ‘𝐵) ≺ (ℵ‘suc 𝐵)) → 𝐴 ≺ (ℵ‘suc 𝐵)) | |
3 | 2 | ex 413 | . . 3 ⊢ (𝐴 ≼ (ℵ‘𝐵) → ((ℵ‘𝐵) ≺ (ℵ‘suc 𝐵) → 𝐴 ≺ (ℵ‘suc 𝐵))) |
4 | 1, 3 | syl5com 31 | . 2 ⊢ (𝐵 ∈ On → (𝐴 ≼ (ℵ‘𝐵) → 𝐴 ≺ (ℵ‘suc 𝐵))) |
5 | sdomdom 8768 | . . . . 5 ⊢ (𝐴 ≺ (ℵ‘suc 𝐵) → 𝐴 ≼ (ℵ‘suc 𝐵)) | |
6 | alephon 9825 | . . . . . 6 ⊢ (ℵ‘suc 𝐵) ∈ On | |
7 | ondomen 9793 | . . . . . 6 ⊢ (((ℵ‘suc 𝐵) ∈ On ∧ 𝐴 ≼ (ℵ‘suc 𝐵)) → 𝐴 ∈ dom card) | |
8 | 6, 7 | mpan 687 | . . . . 5 ⊢ (𝐴 ≼ (ℵ‘suc 𝐵) → 𝐴 ∈ dom card) |
9 | cardid2 9711 | . . . . 5 ⊢ (𝐴 ∈ dom card → (card‘𝐴) ≈ 𝐴) | |
10 | 5, 8, 9 | 3syl 18 | . . . 4 ⊢ (𝐴 ≺ (ℵ‘suc 𝐵) → (card‘𝐴) ≈ 𝐴) |
11 | 10 | ensymd 8791 | . . 3 ⊢ (𝐴 ≺ (ℵ‘suc 𝐵) → 𝐴 ≈ (card‘𝐴)) |
12 | alephnbtwn2 9828 | . . . . . 6 ⊢ ¬ ((ℵ‘𝐵) ≺ (card‘𝐴) ∧ (card‘𝐴) ≺ (ℵ‘suc 𝐵)) | |
13 | 12 | imnani 401 | . . . . 5 ⊢ ((ℵ‘𝐵) ≺ (card‘𝐴) → ¬ (card‘𝐴) ≺ (ℵ‘suc 𝐵)) |
14 | ensdomtr 8900 | . . . . . 6 ⊢ (((card‘𝐴) ≈ 𝐴 ∧ 𝐴 ≺ (ℵ‘suc 𝐵)) → (card‘𝐴) ≺ (ℵ‘suc 𝐵)) | |
15 | 10, 14 | mpancom 685 | . . . . 5 ⊢ (𝐴 ≺ (ℵ‘suc 𝐵) → (card‘𝐴) ≺ (ℵ‘suc 𝐵)) |
16 | 13, 15 | nsyl3 138 | . . . 4 ⊢ (𝐴 ≺ (ℵ‘suc 𝐵) → ¬ (ℵ‘𝐵) ≺ (card‘𝐴)) |
17 | cardon 9702 | . . . . 5 ⊢ (card‘𝐴) ∈ On | |
18 | alephon 9825 | . . . . 5 ⊢ (ℵ‘𝐵) ∈ On | |
19 | domtriord 8910 | . . . . 5 ⊢ (((card‘𝐴) ∈ On ∧ (ℵ‘𝐵) ∈ On) → ((card‘𝐴) ≼ (ℵ‘𝐵) ↔ ¬ (ℵ‘𝐵) ≺ (card‘𝐴))) | |
20 | 17, 18, 19 | mp2an 689 | . . . 4 ⊢ ((card‘𝐴) ≼ (ℵ‘𝐵) ↔ ¬ (ℵ‘𝐵) ≺ (card‘𝐴)) |
21 | 16, 20 | sylibr 233 | . . 3 ⊢ (𝐴 ≺ (ℵ‘suc 𝐵) → (card‘𝐴) ≼ (ℵ‘𝐵)) |
22 | endomtr 8798 | . . 3 ⊢ ((𝐴 ≈ (card‘𝐴) ∧ (card‘𝐴) ≼ (ℵ‘𝐵)) → 𝐴 ≼ (ℵ‘𝐵)) | |
23 | 11, 21, 22 | syl2anc 584 | . 2 ⊢ (𝐴 ≺ (ℵ‘suc 𝐵) → 𝐴 ≼ (ℵ‘𝐵)) |
24 | 4, 23 | impbid1 224 | 1 ⊢ (𝐵 ∈ On → (𝐴 ≼ (ℵ‘𝐵) ↔ 𝐴 ≺ (ℵ‘suc 𝐵))) |
Colors of variables: wff setvar class |
Syntax hints: ¬ wn 3 → wi 4 ↔ wb 205 ∈ wcel 2106 class class class wbr 5074 dom cdm 5589 Oncon0 6266 suc csuc 6268 ‘cfv 6433 ≈ cen 8730 ≼ cdom 8731 ≺ csdm 8732 cardccrd 9693 ℵcale 9694 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1798 ax-4 1812 ax-5 1913 ax-6 1971 ax-7 2011 ax-8 2108 ax-9 2116 ax-10 2137 ax-11 2154 ax-12 2171 ax-ext 2709 ax-rep 5209 ax-sep 5223 ax-nul 5230 ax-pow 5288 ax-pr 5352 ax-un 7588 ax-inf2 9399 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 845 df-3or 1087 df-3an 1088 df-tru 1542 df-fal 1552 df-ex 1783 df-nf 1787 df-sb 2068 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2816 df-nfc 2889 df-ne 2944 df-ral 3069 df-rex 3070 df-rmo 3071 df-reu 3072 df-rab 3073 df-v 3434 df-sbc 3717 df-csb 3833 df-dif 3890 df-un 3892 df-in 3894 df-ss 3904 df-pss 3906 df-nul 4257 df-if 4460 df-pw 4535 df-sn 4562 df-pr 4564 df-op 4568 df-uni 4840 df-int 4880 df-iun 4926 df-br 5075 df-opab 5137 df-mpt 5158 df-tr 5192 df-id 5489 df-eprel 5495 df-po 5503 df-so 5504 df-fr 5544 df-se 5545 df-we 5546 df-xp 5595 df-rel 5596 df-cnv 5597 df-co 5598 df-dm 5599 df-rn 5600 df-res 5601 df-ima 5602 df-pred 6202 df-ord 6269 df-on 6270 df-lim 6271 df-suc 6272 df-iota 6391 df-fun 6435 df-fn 6436 df-f 6437 df-f1 6438 df-fo 6439 df-f1o 6440 df-fv 6441 df-isom 6442 df-riota 7232 df-ov 7278 df-om 7713 df-2nd 7832 df-frecs 8097 df-wrecs 8128 df-recs 8202 df-rdg 8241 df-1o 8297 df-er 8498 df-en 8734 df-dom 8735 df-sdom 8736 df-fin 8737 df-oi 9269 df-har 9316 df-card 9697 df-aleph 9698 |
This theorem is referenced by: alephsuc2 9836 alephreg 10338 |
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