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Theorem alephsucpw 5020
Description: The power set of an aleph dominates the successor aleph. (The Generalized Continuum Hypothesis says they are equinumerous.)
Assertion
Ref Expression
alephsucpw |- (aleph` suc A) ~<_ P~(aleph` A)

Proof of Theorem alephsucpw
StepHypRef Expression
1 fvex 3843 . . . 4 |- (aleph` A) e. V
21canth2 4629 . . 3 |- (aleph` A) ~< P~(aleph` A)
3 alephnbtwn2 5019 . . . 4 |- -. ((aleph` A) ~< P~(aleph` A) /\ P~(aleph` A) ~< (aleph` suc A))
4 imnan 240 . . . 4 |- (((aleph` A) ~< P~(aleph` A) -> -. P~(aleph` A) ~< (aleph` suc A)) <-> -. ((aleph` A) ~< P~(aleph` A) /\ P~(aleph` A) ~< (aleph` suc A)))
53, 4mpbir 188 . . 3 |- ((aleph` A) ~< P~(aleph` A) -> -. P~(aleph` A) ~< (aleph` suc A))
62, 5ax-mp 7 . 2 |- -. P~(aleph` A) ~< (aleph` suc A)
7 fvex 3843 . . 3 |- (aleph` suc A) e. V
81pwex 2823 . . 3 |- P~(aleph` A) e. V
9 domtri 4987 . . 3 |- (((aleph` suc A) e. V /\ P~(aleph` A) e. V) -> ((aleph` suc A) ~<_ P~(aleph` A) <-> -. P~(aleph` A) ~< (aleph` suc A)))
107, 8, 9mp2an 701 . 2 |- ((aleph` suc A) ~<_ P~(aleph` A) <-> -. P~(aleph` A) ~< (aleph` suc A))
116, 10mpbir 188 1 |- (aleph` suc A) ~<_ P~(aleph` A)
Colors of variables: wff set class
Syntax hints:  -. wn 2   -> wi 3   <-> wb 144   /\ wa 221   e. wcel 994  Vcvv 1857  P~cpw 2458   class class class wbr 2692  suc csuc 2977  ` cfv 3263   ~<_ cdom 4506   ~< csdm 4507  alephcale 4960
This theorem is referenced by:  aleph1 5021
This theorem was proved from axioms:  ax-1 4  ax-2 5  ax-3 6  ax-mp 7  ax-7 998  ax-gen 999  ax-8 1000  ax-9 1001  ax-10 1002  ax-11 1003  ax-12 1004  ax-13 1005  ax-14 1006  ax-17 1007  ax-4 1009  ax-5o 1011  ax-6o 1014  ax-9o 1159  ax-10o 1177  ax-16 1247  ax-11o 1255  ax-ext 1500  ax-rep 2767  ax-sep 2777  ax-nul 2784  ax-pow 2818  ax-pr 2855  ax-un 3089  ax-reg 4736  ax-inf2 4770  ax-ac 4890
This theorem depends on definitions:  df-bi 145  df-or 222  df-an 223  df-3or 782  df-3an 783  df-ex 1017  df-sb 1209  df-eu 1421  df-mo 1422  df-clab 1506  df-cleq 1511  df-clel 1514  df-ne 1630  df-ral 1695  df-rex 1696  df-reu 1697  df-rab 1698  df-v 1858  df-sbc 1987  df-csb 2052  df-dif 2101  df-un 2102  df-in 2103  df-ss 2105  df-pss 2107  df-nul 2333  df-if 2416  df-pw 2459  df-sn 2470  df-pr 2471  df-tp 2473  df-op 2474  df-uni 2570  df-int 2601  df-iun 2635  df-br 2693  df-opab 2741  df-tr 2755  df-eprel 2910  df-id 2913  df-po 2918  df-so 2929  df-fr 2947  df-we 2962  df-ord 2978  df-on 2979  df-lim 2980  df-suc 2981  df-om 3219  df-xp 3265  df-rel 3266  df-cnv 3267  df-co 3268  df-dm 3269  df-rn 3270  df-res 3271  df-ima 3272  df-fun 3273  df-fn 3274  df-f 3275  df-f1 3276  df-fo 3277  df-f1o 3278  df-fv 3279  df-rdg 4233  df-er 4401  df-en 4509  df-dom 4510  df-sdom 4511  df-fin 4512  df-card 4962  df-aleph 4963
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