Theorem unialeph 10001

Description: The union of the class of transfinite cardinals (the range of the aleph function) is the class of ordinal numbers. (Contributed by NM, 11-Nov-2003.)

Assertion

Ref	Expression
unialeph	⊢ ∪ ran ℵ = On

Proof of Theorem unialeph

Step	Hyp	Ref	Expression
1		alephprc 9999	. . . 4 ⊢ ¬ ran ℵ ∈ V
2		uniexb 7705	. . . 4 ⊢ (ran ℵ ∈ V ↔ ∪ ran ℵ ∈ V)
3	1, 2	mtbi 322	. . 3 ⊢ ¬ ∪ ran ℵ ∈ V
4		elex 3458	. . 3 ⊢ (∪ ran ℵ ∈ On → ∪ ran ℵ ∈ V)
5	3, 4	mto 197	. 2 ⊢ ¬ ∪ ran ℵ ∈ On
6		alephsson 10000	. . . 4 ⊢ ran ℵ ⊆ On
7		ssorduni 7720	. . . 4 ⊢ (ran ℵ ⊆ On → Ord ∪ ran ℵ)
8	6, 7	ax-mp 5	. . 3 ⊢ Ord ∪ ran ℵ
9		ordeleqon 7723	. . 3 ⊢ (Ord ∪ ran ℵ ↔ (∪ ran ℵ ∈ On ∨ ∪ ran ℵ = On))
10	8, 9	mpbi 230	. 2 ⊢ (∪ ran ℵ ∈ On ∨ ∪ ran ℵ = On)
11	5, 10	mtpor 1771	1 ⊢ ∪ ran ℵ = On

Syntax hints:   ∨ wo 847   = wceq 1541   ∈ wcel 2113  Vcvv 3437   ⊆ wss 3898  ∪ cuni 4860  ran crn 5622  Ord word 6312  Oncon0 6313  ℵcale 9838

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 2705  ax-rep 5221  ax-sep 5238  ax-nul 5248  ax-pow 5307  ax-pr 5374  ax-un 7676  ax-inf2 9540

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 2566  df-clab 2712  df-cleq 2725  df-clel 2808  df-nfc 2882  df-ne 2930  df-nel 3034  df-ral 3049  df-rex 3058  df-rmo 3347  df-reu 3348  df-rab 3397  df-v 3439  df-sbc 3738  df-csb 3847  df-dif 3901  df-un 3903  df-in 3905  df-ss 3915  df-pss 3918  df-nul 4283  df-if 4477  df-pw 4553  df-sn 4578  df-pr 4580  df-op 4584  df-uni 4861  df-int 4900  df-iun 4945  df-br 5096  df-opab 5158  df-mpt 5177  df-tr 5203  df-id 5516  df-eprel 5521  df-po 5529  df-so 5530  df-fr 5574  df-se 5575  df-we 5576  df-xp 5627  df-rel 5628  df-cnv 5629  df-co 5630  df-dm 5631  df-rn 5632  df-res 5633  df-ima 5634  df-pred 6255  df-ord 6316  df-on 6317  df-lim 6318  df-suc 6319  df-iota 6444  df-fun 6490  df-fn 6491  df-f 6492  df-f1 6493  df-fo 6494  df-f1o 6495  df-fv 6496  df-isom 6497  df-riota 7311  df-ov 7357  df-om 7805  df-2nd 7930  df-frecs 8219  df-wrecs 8250  df-recs 8299  df-rdg 8337  df-1o 8393  df-er 8630  df-en 8878  df-dom 8879  df-sdom 8880  df-fin 8881  df-oi 9405  df-har 9452  df-card 9841  df-aleph 9842

This theorem is referenced by: (None)