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| Mirrors > Home > MPE Home > Th. List > alephordilem1 | Structured version Visualization version GIF version | ||
| Description: Lemma for alephordi 9982. (Contributed by NM, 23-Oct-2009.) (Revised by Mario Carneiro, 15-May-2015.) |
| Ref | Expression |
|---|---|
| alephordilem1 | ⊢ (𝐴 ∈ On → (ℵ‘𝐴) ≺ (ℵ‘suc 𝐴)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | alephon 9977 | . . 3 ⊢ (ℵ‘𝐴) ∈ On | |
| 2 | onenon 9859 | . . 3 ⊢ ((ℵ‘𝐴) ∈ On → (ℵ‘𝐴) ∈ dom card) | |
| 3 | harsdom 9905 | . . 3 ⊢ ((ℵ‘𝐴) ∈ dom card → (ℵ‘𝐴) ≺ (har‘(ℵ‘𝐴))) | |
| 4 | 1, 2, 3 | mp2b 10 | . 2 ⊢ (ℵ‘𝐴) ≺ (har‘(ℵ‘𝐴)) |
| 5 | alephsuc 9976 | . 2 ⊢ (𝐴 ∈ On → (ℵ‘suc 𝐴) = (har‘(ℵ‘𝐴))) | |
| 6 | 4, 5 | breqtrrid 5134 | 1 ⊢ (𝐴 ∈ On → (ℵ‘𝐴) ≺ (ℵ‘suc 𝐴)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∈ wcel 2113 class class class wbr 5096 dom cdm 5622 Oncon0 6315 suc csuc 6317 ‘cfv 6490 ≺ csdm 8880 harchar 9459 cardccrd 9845 ℵcale 9846 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-8 2115 ax-9 2123 ax-10 2146 ax-11 2162 ax-12 2182 ax-ext 2706 ax-rep 5222 ax-sep 5239 ax-nul 5249 ax-pow 5308 ax-pr 5375 ax-un 7678 ax-inf2 9548 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-nf 1785 df-sb 2068 df-mo 2537 df-eu 2567 df-clab 2713 df-cleq 2726 df-clel 2809 df-nfc 2883 df-ne 2931 df-ral 3050 df-rex 3059 df-rmo 3348 df-reu 3349 df-rab 3398 df-v 3440 df-sbc 3739 df-csb 3848 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-pss 3919 df-nul 4284 df-if 4478 df-pw 4554 df-sn 4579 df-pr 4581 df-op 4585 df-uni 4862 df-int 4901 df-iun 4946 df-br 5097 df-opab 5159 df-mpt 5178 df-tr 5204 df-id 5517 df-eprel 5522 df-po 5530 df-so 5531 df-fr 5575 df-se 5576 df-we 5577 df-xp 5628 df-rel 5629 df-cnv 5630 df-co 5631 df-dm 5632 df-rn 5633 df-res 5634 df-ima 5635 df-pred 6257 df-ord 6318 df-on 6319 df-lim 6320 df-suc 6321 df-iota 6446 df-fun 6492 df-fn 6493 df-f 6494 df-f1 6495 df-fo 6496 df-f1o 6497 df-fv 6498 df-isom 6499 df-riota 7313 df-ov 7359 df-om 7807 df-2nd 7932 df-frecs 8221 df-wrecs 8252 df-recs 8301 df-rdg 8339 df-er 8633 df-en 8882 df-dom 8883 df-sdom 8884 df-oi 9413 df-har 9460 df-card 9849 df-aleph 9850 |
| This theorem is referenced by: alephordi 9982 alephsucdom 9987 alephsuc3 10489 alephreg 10491 gchaleph 10580 |
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