Theorem unialeph 9857

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 9855	. . . 4 ⊢ ¬ ran ℵ ∈ V
2		uniexb 7614	. . . 4 ⊢ (ran ℵ ∈ V ↔ ∪ ran ℵ ∈ V)
3	1, 2	mtbi 322	. . 3 ⊢ ¬ ∪ ran ℵ ∈ V
4		elex 3450	. . 3 ⊢ (∪ ran ℵ ∈ On → ∪ ran ℵ ∈ V)
5	3, 4	mto 196	. 2 ⊢ ¬ ∪ ran ℵ ∈ On
6		alephsson 9856	. . . 4 ⊢ ran ℵ ⊆ On
7		ssorduni 7629	. . . 4 ⊢ (ran ℵ ⊆ On → Ord ∪ ran ℵ)
8	6, 7	ax-mp 5	. . 3 ⊢ Ord ∪ ran ℵ
9		ordeleqon 7632	. . 3 ⊢ (Ord ∪ ran ℵ ↔ (∪ ran ℵ ∈ On ∨ ∪ ran ℵ = On))
10	8, 9	mpbi 229	. 2 ⊢ (∪ ran ℵ ∈ On ∨ ∪ ran ℵ = On)
11	5, 10	mtpor 1773	1 ⊢ ∪ ran ℵ = On

Syntax hints:   ∨ wo 844   = wceq 1539   ∈ wcel 2106  Vcvv 3432   ⊆ wss 3887  ∪ cuni 4839  ran crn 5590  Ord word 6265  Oncon0 6266  ℵcale 9694

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1798  ax-4 1812  ax-5 1913  ax-6 1971  ax-7 2011  ax-8 2108  ax-9 2116  ax-10 2137  ax-11 2154  ax-12 2171  ax-ext 2709  ax-rep 5209  ax-sep 5223  ax-nul 5230  ax-pow 5288  ax-pr 5352  ax-un 7588  ax-inf2 9399

This theorem depends on definitions:  df-bi 206  df-an 397  df-or 845  df-3or 1087  df-3an 1088  df-tru 1542  df-fal 1552  df-ex 1783  df-nf 1787  df-sb 2068  df-mo 2540  df-eu 2569  df-clab 2716  df-cleq 2730  df-clel 2816  df-nfc 2889  df-ne 2944  df-nel 3050  df-ral 3069  df-rex 3070  df-rmo 3071  df-reu 3072  df-rab 3073  df-v 3434  df-sbc 3717  df-csb 3833  df-dif 3890  df-un 3892  df-in 3894  df-ss 3904  df-pss 3906  df-nul 4257  df-if 4460  df-pw 4535  df-sn 4562  df-pr 4564  df-op 4568  df-uni 4840  df-int 4880  df-iun 4926  df-br 5075  df-opab 5137  df-mpt 5158  df-tr 5192  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 6202  df-ord 6269  df-on 6270  df-lim 6271  df-suc 6272  df-iota 6391  df-fun 6435  df-fn 6436  df-f 6437  df-f1 6438  df-fo 6439  df-f1o 6440  df-fv 6441  df-isom 6442  df-riota 7232  df-ov 7278  df-om 7713  df-2nd 7832  df-frecs 8097  df-wrecs 8128  df-recs 8202  df-rdg 8241  df-1o 8297  df-er 8498  df-en 8734  df-dom 8735  df-sdom 8736  df-fin 8737  df-oi 9269  df-har 9316  df-card 9697  df-aleph 9698

This theorem is referenced by: (None)