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Theorem fict 7160
Description: A finite set is dominated by  om. Also see finct 7446. (Contributed by Thierry Arnoux, 27-Mar-2018.)
Assertion
Ref Expression
fict  |-  ( A  e.  Fin  ->  A  ~<_  om )

Proof of Theorem fict
Dummy variable  n is distinct from all other variables.
StepHypRef Expression
1 isfi 7037 . . 3  |-  ( A  e.  Fin  <->  E. n  e.  om  A  ~~  n
)
21biimpi 120 . 2  |-  ( A  e.  Fin  ->  E. n  e.  om  A  ~~  n
)
3 simprr 537 . . 3  |-  ( ( A  e.  Fin  /\  ( n  e.  om  /\  A  ~~  n ) )  ->  A  ~~  n )
4 omex 4735 . . . . 5  |-  om  e.  _V
5 ordom 4749 . . . . . 6  |-  Ord  om
6 ordelss 4519 . . . . . 6  |-  ( ( Ord  om  /\  n  e.  om )  ->  n  C_ 
om )
75, 6mpan 428 . . . . 5  |-  ( n  e.  om  ->  n  C_ 
om )
8 ssdomg 7055 . . . . 5  |-  ( om  e.  _V  ->  (
n  C_  om  ->  n  ~<_  om ) )
94, 7, 8mpsyl 65 . . . 4  |-  ( n  e.  om  ->  n  ~<_  om )
109ad2antrl 494 . . 3  |-  ( ( A  e.  Fin  /\  ( n  e.  om  /\  A  ~~  n ) )  ->  n  ~<_  om )
11 endomtr 7067 . . 3  |-  ( ( A  ~~  n  /\  n  ~<_  om )  ->  A  ~<_  om )
123, 10, 11syl2anc 415 . 2  |-  ( ( A  e.  Fin  /\  ( n  e.  om  /\  A  ~~  n ) )  ->  A  ~<_  om )
132, 12rexlimddv 2673 1  |-  ( A  e.  Fin  ->  A  ~<_  om )
Colors of variables: wff set class
Syntax hints:    -> wi 4    /\ wa 104    e. wcel 2209   E.wrex 2529   _Vcvv 2821    C_ wss 3220   class class class wbr 4125   Ord word 4502   omcom 4732    ~~ cen 7010    ~<_ cdom 7011   Fincfn 7012
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-in1 623  ax-in2 624  ax-io 721  ax-5 1500  ax-7 1501  ax-gen 1502  ax-ie1 1546  ax-ie2 1547  ax-8 1557  ax-10 1558  ax-11 1559  ax-i12 1560  ax-bndl 1562  ax-4 1563  ax-17 1579  ax-i9 1583  ax-ial 1587  ax-i5r 1588  ax-14 2212  ax-ext 2220  ax-sep 4244  ax-nul 4254  ax-pow 4306  ax-pr 4341  ax-un 4573  ax-iinf 4730
This theorem depends on definitions:  df-bi 117  df-3an 1011  df-tru 1405  df-nf 1514  df-sb 1816  df-eu 2089  df-mo 2090  df-clab 2225  df-cleq 2231  df-clel 2234  df-nfc 2381  df-ral 2533  df-rex 2534  df-v 2823  df-dif 3222  df-un 3224  df-in 3226  df-ss 3233  df-nul 3521  df-pw 3687  df-sn 3711  df-pr 3712  df-op 3714  df-uni 3931  df-int 3966  df-br 4126  df-opab 4188  df-tr 4225  df-id 4433  df-iord 4506  df-suc 4511  df-iom 4733  df-xp 4775  df-rel 4776  df-cnv 4777  df-co 4778  df-dm 4779  df-rn 4780  df-res 4781  df-ima 4782  df-fun 5374  df-fn 5375  df-f 5376  df-f1 5377  df-fo 5378  df-f1o 5379  df-en 7013  df-dom 7014  df-fin 7015
This theorem is referenced by:  pw1ninf  16935
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