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Mirrors > Home > MPE Home > Th. List > alephord3 | Structured version Visualization version GIF version |
Description: Ordering property of the aleph function. (Contributed by NM, 11-Nov-2003.) |
Ref | Expression |
---|---|
alephord3 | ⊢ ((𝐴 ∈ On ∧ 𝐵 ∈ On) → (𝐴 ⊆ 𝐵 ↔ (ℵ‘𝐴) ⊆ (ℵ‘𝐵))) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | alephord2 9763 | . . . 4 ⊢ ((𝐵 ∈ On ∧ 𝐴 ∈ On) → (𝐵 ∈ 𝐴 ↔ (ℵ‘𝐵) ∈ (ℵ‘𝐴))) | |
2 | 1 | ancoms 458 | . . 3 ⊢ ((𝐴 ∈ On ∧ 𝐵 ∈ On) → (𝐵 ∈ 𝐴 ↔ (ℵ‘𝐵) ∈ (ℵ‘𝐴))) |
3 | 2 | notbid 317 | . 2 ⊢ ((𝐴 ∈ On ∧ 𝐵 ∈ On) → (¬ 𝐵 ∈ 𝐴 ↔ ¬ (ℵ‘𝐵) ∈ (ℵ‘𝐴))) |
4 | ontri1 6285 | . 2 ⊢ ((𝐴 ∈ On ∧ 𝐵 ∈ On) → (𝐴 ⊆ 𝐵 ↔ ¬ 𝐵 ∈ 𝐴)) | |
5 | alephon 9756 | . . . 4 ⊢ (ℵ‘𝐴) ∈ On | |
6 | alephon 9756 | . . . 4 ⊢ (ℵ‘𝐵) ∈ On | |
7 | ontri1 6285 | . . . 4 ⊢ (((ℵ‘𝐴) ∈ On ∧ (ℵ‘𝐵) ∈ On) → ((ℵ‘𝐴) ⊆ (ℵ‘𝐵) ↔ ¬ (ℵ‘𝐵) ∈ (ℵ‘𝐴))) | |
8 | 5, 6, 7 | mp2an 688 | . . 3 ⊢ ((ℵ‘𝐴) ⊆ (ℵ‘𝐵) ↔ ¬ (ℵ‘𝐵) ∈ (ℵ‘𝐴)) |
9 | 8 | a1i 11 | . 2 ⊢ ((𝐴 ∈ On ∧ 𝐵 ∈ On) → ((ℵ‘𝐴) ⊆ (ℵ‘𝐵) ↔ ¬ (ℵ‘𝐵) ∈ (ℵ‘𝐴))) |
10 | 3, 4, 9 | 3bitr4d 310 | 1 ⊢ ((𝐴 ∈ On ∧ 𝐵 ∈ On) → (𝐴 ⊆ 𝐵 ↔ (ℵ‘𝐴) ⊆ (ℵ‘𝐵))) |
Colors of variables: wff setvar class |
Syntax hints: ¬ wn 3 → wi 4 ↔ wb 205 ∧ wa 395 ∈ wcel 2108 ⊆ wss 3883 Oncon0 6251 ‘cfv 6418 ℵcale 9625 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1799 ax-4 1813 ax-5 1914 ax-6 1972 ax-7 2012 ax-8 2110 ax-9 2118 ax-10 2139 ax-11 2156 ax-12 2173 ax-ext 2709 ax-rep 5205 ax-sep 5218 ax-nul 5225 ax-pow 5283 ax-pr 5347 ax-un 7566 ax-inf2 9329 |
This theorem depends on definitions: df-bi 206 df-an 396 df-or 844 df-3or 1086 df-3an 1087 df-tru 1542 df-fal 1552 df-ex 1784 df-nf 1788 df-sb 2069 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2817 df-nfc 2888 df-ne 2943 df-ral 3068 df-rex 3069 df-reu 3070 df-rmo 3071 df-rab 3072 df-v 3424 df-sbc 3712 df-csb 3829 df-dif 3886 df-un 3888 df-in 3890 df-ss 3900 df-pss 3902 df-nul 4254 df-if 4457 df-pw 4532 df-sn 4559 df-pr 4561 df-tp 4563 df-op 4565 df-uni 4837 df-int 4877 df-iun 4923 df-br 5071 df-opab 5133 df-mpt 5154 df-tr 5188 df-id 5480 df-eprel 5486 df-po 5494 df-so 5495 df-fr 5535 df-se 5536 df-we 5537 df-xp 5586 df-rel 5587 df-cnv 5588 df-co 5589 df-dm 5590 df-rn 5591 df-res 5592 df-ima 5593 df-pred 6191 df-ord 6254 df-on 6255 df-lim 6256 df-suc 6257 df-iota 6376 df-fun 6420 df-fn 6421 df-f 6422 df-f1 6423 df-fo 6424 df-f1o 6425 df-fv 6426 df-isom 6427 df-riota 7212 df-ov 7258 df-om 7688 df-2nd 7805 df-frecs 8068 df-wrecs 8099 df-recs 8173 df-rdg 8212 df-er 8456 df-en 8692 df-dom 8693 df-sdom 8694 df-fin 8695 df-oi 9199 df-har 9246 df-card 9628 df-aleph 9629 |
This theorem is referenced by: alephgeom 9769 aleph11 9771 alephexp1 10266 |
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