Theorem f1oen2g 6994

Description: The domain and range of a one-to-one, onto function are equinumerous. This variation of f1oeng 6996 does not require the Axiom of Replacement. (Contributed by Mario Carneiro, 10-Sep-2015.)

Assertion

Ref	Expression
f1oen2g	|- ( ( A e. V /\ B e. W /\ F : A -1-1-onto-> B ) -> A ~~ B )

Proof of Theorem f1oen2g

Step	Hyp	Ref	Expression
1		f1of 5614	. . . 4 |- ( F : A -1-1-onto-> B -> F : A --> B )
2		fex2 5531	. . . 4 |- ( ( F : A --> B /\ A e. V /\ B e. W ) -> F e. _V )
3	1, 2	syl3an1 1307	. . 3 |- ( ( F : A -1-1-onto-> B /\ A e. V /\ B e. W ) -> F e. _V )
4	3	3coml 1237	. 2 |- ( ( A e. V /\ B e. W /\ F : A -1-1-onto-> B ) -> F e. _V )
5		simp3 1026	. 2 |- ( ( A e. V /\ B e. W /\ F : A -1-1-onto-> B ) -> F : A -1-1-onto-> B )
6		f1oen3g 6993	. 2 |- ( ( F e. _V /\ F : A -1-1-onto-> B ) -> A ~~ B )
7	4, 5, 6	syl2anc 411	1 |- ( ( A e. V /\ B e. W /\ F : A -1-1-onto-> B ) -> A ~~ B )

Syntax hints:   -> wi 4   /\ w3a 1005   e. wcel 2203   _Vcvv 2813   class class class wbr 4109   -->wf 5348   -1-1-onto->wf1o 5351   ~~ cen 6973

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-io 717  ax-5 1496  ax-7 1497  ax-gen 1498  ax-ie1 1542  ax-ie2 1543  ax-8 1553  ax-10 1554  ax-11 1555  ax-i12 1556  ax-bndl 1558  ax-4 1559  ax-17 1575  ax-i9 1579  ax-ial 1583  ax-i5r 1584  ax-13 2205  ax-14 2206  ax-ext 2214  ax-sep 4228  ax-pow 4287  ax-pr 4322  ax-un 4554

This theorem depends on definitions:  df-bi 117  df-3an 1007  df-tru 1401  df-nf 1510  df-sb 1812  df-eu 2083  df-mo 2084  df-clab 2219  df-cleq 2225  df-clel 2228  df-nfc 2373  df-ral 2525  df-rex 2526  df-v 2815  df-un 3215  df-in 3217  df-ss 3224  df-pw 3671  df-sn 3695  df-pr 3696  df-op 3698  df-uni 3915  df-br 4110  df-opab 4172  df-xp 4755  df-rel 4756  df-cnv 4757  df-co 4758  df-dm 4759  df-rn 4760  df-fun 5354  df-fn 5355  df-f 5356  df-f1 5357  df-fo 5358  df-f1o 5359  df-en 6976

This theorem is referenced by:  f1oeng  6996  enrefg  7003  en2d  7007  en3d  7008  ener  7019  f1imaen2g  7033  cnven  7049  xpcomen  7078  exmidpw2en  7172  xpfi  7192  iccen  10340  nnenom  10796  eqgen  13944