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| Mirrors > Home > MPE Home > Th. List > alephord | Structured version Visualization version GIF version | ||
| Description: Ordering property of the aleph function. (Contributed by NM, 26-Oct-2003.) (Revised by Mario Carneiro, 9-Feb-2013.) |
| Ref | Expression |
|---|---|
| alephord | ⊢ ((𝐴 ∈ On ∧ 𝐵 ∈ On) → (𝐴 ∈ 𝐵 ↔ (ℵ‘𝐴) ≺ (ℵ‘𝐵))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | alephordi 10059 | . . 3 ⊢ (𝐵 ∈ On → (𝐴 ∈ 𝐵 → (ℵ‘𝐴) ≺ (ℵ‘𝐵))) | |
| 2 | 1 | adantl 486 | . 2 ⊢ ((𝐴 ∈ On ∧ 𝐵 ∈ On) → (𝐴 ∈ 𝐵 → (ℵ‘𝐴) ≺ (ℵ‘𝐵))) |
| 3 | brsdom 8972 | . . 3 ⊢ ((ℵ‘𝐴) ≺ (ℵ‘𝐵) ↔ ((ℵ‘𝐴) ≼ (ℵ‘𝐵) ∧ ¬ (ℵ‘𝐴) ≈ (ℵ‘𝐵))) | |
| 4 | alephon 10054 | . . . . . . . . 9 ⊢ (ℵ‘𝐴) ∈ On | |
| 5 | alephon 10054 | . . . . . . . . 9 ⊢ (ℵ‘𝐵) ∈ On | |
| 6 | domtriord 9112 | . . . . . . . . 9 ⊢ (((ℵ‘𝐴) ∈ On ∧ (ℵ‘𝐵) ∈ On) → ((ℵ‘𝐴) ≼ (ℵ‘𝐵) ↔ ¬ (ℵ‘𝐵) ≺ (ℵ‘𝐴))) | |
| 7 | 4, 5, 6 | mp2an 704 | . . . . . . . 8 ⊢ ((ℵ‘𝐴) ≼ (ℵ‘𝐵) ↔ ¬ (ℵ‘𝐵) ≺ (ℵ‘𝐴)) |
| 8 | alephordi 10059 | . . . . . . . . 9 ⊢ (𝐴 ∈ On → (𝐵 ∈ 𝐴 → (ℵ‘𝐵) ≺ (ℵ‘𝐴))) | |
| 9 | 8 | con3d 153 | . . . . . . . 8 ⊢ (𝐴 ∈ On → (¬ (ℵ‘𝐵) ≺ (ℵ‘𝐴) → ¬ 𝐵 ∈ 𝐴)) |
| 10 | 7, 9 | biimtrid 245 | . . . . . . 7 ⊢ (𝐴 ∈ On → ((ℵ‘𝐴) ≼ (ℵ‘𝐵) → ¬ 𝐵 ∈ 𝐴)) |
| 11 | 10 | adantr 485 | . . . . . 6 ⊢ ((𝐴 ∈ On ∧ 𝐵 ∈ On) → ((ℵ‘𝐴) ≼ (ℵ‘𝐵) → ¬ 𝐵 ∈ 𝐴)) |
| 12 | ontri1 6397 | . . . . . 6 ⊢ ((𝐴 ∈ On ∧ 𝐵 ∈ On) → (𝐴 ⊆ 𝐵 ↔ ¬ 𝐵 ∈ 𝐴)) | |
| 13 | 11, 12 | sylibrd 262 | . . . . 5 ⊢ ((𝐴 ∈ On ∧ 𝐵 ∈ On) → ((ℵ‘𝐴) ≼ (ℵ‘𝐵) → 𝐴 ⊆ 𝐵)) |
| 14 | fveq2 6883 | . . . . . . 7 ⊢ (𝐴 = 𝐵 → (ℵ‘𝐴) = (ℵ‘𝐵)) | |
| 15 | eqeng 8984 | . . . . . . 7 ⊢ ((ℵ‘𝐴) ∈ On → ((ℵ‘𝐴) = (ℵ‘𝐵) → (ℵ‘𝐴) ≈ (ℵ‘𝐵))) | |
| 16 | 4, 14, 15 | mpsyl 69 | . . . . . 6 ⊢ (𝐴 = 𝐵 → (ℵ‘𝐴) ≈ (ℵ‘𝐵)) |
| 17 | 16 | necon3bi 2984 | . . . . 5 ⊢ (¬ (ℵ‘𝐴) ≈ (ℵ‘𝐵) → 𝐴 ≠ 𝐵) |
| 18 | 13, 17 | anim12d1 621 | . . . 4 ⊢ ((𝐴 ∈ On ∧ 𝐵 ∈ On) → (((ℵ‘𝐴) ≼ (ℵ‘𝐵) ∧ ¬ (ℵ‘𝐴) ≈ (ℵ‘𝐵)) → (𝐴 ⊆ 𝐵 ∧ 𝐴 ≠ 𝐵))) |
| 19 | onelpss 6403 | . . . 4 ⊢ ((𝐴 ∈ On ∧ 𝐵 ∈ On) → (𝐴 ∈ 𝐵 ↔ (𝐴 ⊆ 𝐵 ∧ 𝐴 ≠ 𝐵))) | |
| 20 | 18, 19 | sylibrd 262 | . . 3 ⊢ ((𝐴 ∈ On ∧ 𝐵 ∈ On) → (((ℵ‘𝐴) ≼ (ℵ‘𝐵) ∧ ¬ (ℵ‘𝐴) ≈ (ℵ‘𝐵)) → 𝐴 ∈ 𝐵)) |
| 21 | 3, 20 | biimtrid 245 | . 2 ⊢ ((𝐴 ∈ On ∧ 𝐵 ∈ On) → ((ℵ‘𝐴) ≺ (ℵ‘𝐵) → 𝐴 ∈ 𝐵)) |
| 22 | 2, 21 | impbid 215 | 1 ⊢ ((𝐴 ∈ On ∧ 𝐵 ∈ On) → (𝐴 ∈ 𝐵 ↔ (ℵ‘𝐴) ≺ (ℵ‘𝐵))) |
| Colors of variables: wff setvar class |
| Syntax hints: ¬ wn 3 → wi 4 ↔ wb 209 ∧ wa 400 = wceq 1570 ∈ wcel 2143 ≠ wne 2958 ⊆ wss 3906 class class class wbr 5110 Oncon0 6362 ‘cfv 6538 ≈ cen 8941 ≼ cdom 8942 ≺ csdm 8943 ℵcale 9923 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1825 ax-4 1839 ax-5 1940 ax-6 1997 ax-7 2038 ax-8 2145 ax-9 2153 ax-10 2176 ax-11 2192 ax-12 2213 ax-ext 2735 ax-rep 5239 ax-sep 5258 ax-nul 5270 ax-pow 5338 ax-pr 5406 ax-un 7734 ax-inf2 9611 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1810 df-nf 1814 df-sb 2097 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2838 df-nfc 2912 df-ne 2959 df-ral 3080 df-rex 3090 df-rmo 3369 df-reu 3370 df-rab 3417 df-v 3457 df-sbc 3746 df-csb 3855 df-dif 3909 df-un 3911 df-in 3913 df-ss 3923 df-pss 3926 df-nul 4288 df-if 4489 df-pw 4565 df-sn 4591 df-pr 4593 df-op 4597 df-uni 4874 df-int 4914 df-iun 4959 df-br 5111 df-opab 5175 df-mpt 5194 df-tr 5220 df-id 5558 df-eprel 5563 df-po 5571 df-so 5572 df-fr 5616 df-se 5617 df-we 5618 df-xp 5669 df-rel 5670 df-cnv 5671 df-co 5672 df-dm 5673 df-rn 5674 df-res 5675 df-ima 5676 df-pred 6304 df-ord 6365 df-on 6366 df-lim 6367 df-suc 6368 df-iota 6494 df-fun 6540 df-fn 6541 df-f 6542 df-f1 6543 df-fo 6544 df-f1o 6545 df-fv 6546 df-isom 6547 df-riota 7369 df-ov 7415 df-om 7864 df-2nd 7988 df-frecs 8279 df-wrecs 8310 df-recs 8359 df-rdg 8398 df-er 8695 df-en 8945 df-dom 8946 df-sdom 8947 df-oi 9473 df-har 9520 df-card 9926 df-aleph 9927 |
| This theorem is referenced by: alephord2 10061 alephdom 10066 alephval2 10558 alephiso2 44264 |
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