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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 9828 | . . 3 ⊢ (𝐵 ∈ On → (ℵ‘𝐵) ≺ (ℵ‘suc 𝐵)) | |
2 | domsdomtr 8879 | . . . 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 8749 | . . . . 5 ⊢ (𝐴 ≺ (ℵ‘suc 𝐵) → 𝐴 ≼ (ℵ‘suc 𝐵)) | |
6 | alephon 9824 | . . . . . 6 ⊢ (ℵ‘suc 𝐵) ∈ On | |
7 | ondomen 9792 | . . . . . 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 9710 | . . . . 5 ⊢ (𝐴 ∈ dom card → (card‘𝐴) ≈ 𝐴) | |
10 | 5, 8, 9 | 3syl 18 | . . . 4 ⊢ (𝐴 ≺ (ℵ‘suc 𝐵) → (card‘𝐴) ≈ 𝐴) |
11 | 10 | ensymd 8772 | . . 3 ⊢ (𝐴 ≺ (ℵ‘suc 𝐵) → 𝐴 ≈ (card‘𝐴)) |
12 | alephnbtwn2 9827 | . . . . . 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 8880 | . . . . . 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 9701 | . . . . 5 ⊢ (card‘𝐴) ∈ On | |
18 | alephon 9824 | . . . . 5 ⊢ (ℵ‘𝐵) ∈ On | |
19 | domtriord 8890 | . . . . 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 8779 | . . 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 2110 class class class wbr 5079 dom cdm 5589 Oncon0 6264 suc csuc 6266 ‘cfv 6431 ≈ cen 8711 ≼ cdom 8712 ≺ csdm 8713 cardccrd 9692 ℵcale 9693 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1802 ax-4 1816 ax-5 1917 ax-6 1975 ax-7 2015 ax-8 2112 ax-9 2120 ax-10 2141 ax-11 2158 ax-12 2175 ax-ext 2711 ax-rep 5214 ax-sep 5227 ax-nul 5234 ax-pow 5292 ax-pr 5356 ax-un 7580 ax-inf2 9375 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 845 df-3or 1087 df-3an 1088 df-tru 1545 df-fal 1555 df-ex 1787 df-nf 1791 df-sb 2072 df-mo 2542 df-eu 2571 df-clab 2718 df-cleq 2732 df-clel 2818 df-nfc 2891 df-ne 2946 df-ral 3071 df-rex 3072 df-reu 3073 df-rmo 3074 df-rab 3075 df-v 3433 df-sbc 3721 df-csb 3838 df-dif 3895 df-un 3897 df-in 3899 df-ss 3909 df-pss 3911 df-nul 4263 df-if 4466 df-pw 4541 df-sn 4568 df-pr 4570 df-op 4574 df-uni 4846 df-int 4886 df-iun 4932 df-br 5080 df-opab 5142 df-mpt 5163 df-tr 5197 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 6200 df-ord 6267 df-on 6268 df-lim 6269 df-suc 6270 df-iota 6389 df-fun 6433 df-fn 6434 df-f 6435 df-f1 6436 df-fo 6437 df-f1o 6438 df-fv 6439 df-isom 6440 df-riota 7226 df-ov 7272 df-om 7705 df-2nd 7823 df-frecs 8086 df-wrecs 8117 df-recs 8191 df-rdg 8230 df-1o 8286 df-er 8479 df-en 8715 df-dom 8716 df-sdom 8717 df-fin 8718 df-oi 9245 df-har 9292 df-card 9696 df-aleph 9697 |
This theorem is referenced by: alephsuc2 9835 alephreg 10337 |
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