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Theorem ordwe 4674
Description: Epsilon well-orders every ordinal. Proposition 7.4 of [TakeutiZaring] p. 36. (Contributed by NM, 3-Apr-1994.)
Assertion
Ref Expression
ordwe  |-  ( Ord 
A  ->  _E  We  A )

Proof of Theorem ordwe
Dummy variables  x  y  z are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 ordfr 4673 . 2  |-  ( Ord 
A  ->  _E  Fr  A )
2 ordelord 4478 . . . . 5  |-  ( ( Ord  A  /\  z  e.  A )  ->  Ord  z )
323ad2antr3 1190 . . . 4  |-  ( ( Ord  A  /\  (
x  e.  A  /\  y  e.  A  /\  z  e.  A )
)  ->  Ord  z )
4 ordtr1 4485 . . . . 5  |-  ( Ord  z  ->  ( (
x  e.  y  /\  y  e.  z )  ->  x  e.  z ) )
5 epel 4389 . . . . . 6  |-  ( x  _E  y  <->  x  e.  y )
6 epel 4389 . . . . . 6  |-  ( y  _E  z  <->  y  e.  z )
75, 6anbi12i 460 . . . . 5  |-  ( ( x  _E  y  /\  y  _E  z )  <->  ( x  e.  y  /\  y  e.  z )
)
8 epel 4389 . . . . 5  |-  ( x  _E  z  <->  x  e.  z )
94, 7, 83imtr4g 205 . . . 4  |-  ( Ord  z  ->  ( (
x  _E  y  /\  y  _E  z )  ->  x  _E  z ) )
103, 9syl 14 . . 3  |-  ( ( Ord  A  /\  (
x  e.  A  /\  y  e.  A  /\  z  e.  A )
)  ->  ( (
x  _E  y  /\  y  _E  z )  ->  x  _E  z ) )
1110ralrimivvva 2615 . 2  |-  ( Ord 
A  ->  A. x  e.  A  A. y  e.  A  A. z  e.  A  ( (
x  _E  y  /\  y  _E  z )  ->  x  _E  z ) )
12 df-wetr 4431 . 2  |-  (  _E  We  A  <->  (  _E  Fr  A  /\  A. x  e.  A  A. y  e.  A  A. z  e.  A  ( (
x  _E  y  /\  y  _E  z )  ->  x  _E  z ) ) )
131, 11, 12sylanbrc 417 1  |-  ( Ord 
A  ->  _E  We  A )
Colors of variables: wff set class
Syntax hints:    -> wi 4    /\ wa 104    /\ w3a 1004    e. wcel 2202   A.wral 2510   class class class wbr 4088    _E cep 4384    Fr wfr 4425    We wwe 4427   Ord word 4459
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 716  ax-5 1495  ax-7 1496  ax-gen 1497  ax-ie1 1541  ax-ie2 1542  ax-8 1552  ax-10 1553  ax-11 1554  ax-i12 1555  ax-bndl 1557  ax-4 1558  ax-17 1574  ax-i9 1578  ax-ial 1582  ax-i5r 1583  ax-14 2205  ax-ext 2213  ax-sep 4207  ax-pow 4264  ax-pr 4299  ax-setind 4635
This theorem depends on definitions:  df-bi 117  df-3an 1006  df-tru 1400  df-nf 1509  df-sb 1811  df-eu 2082  df-mo 2083  df-clab 2218  df-cleq 2224  df-clel 2227  df-nfc 2363  df-ral 2515  df-rex 2516  df-v 2804  df-un 3204  df-in 3206  df-ss 3213  df-pw 3654  df-sn 3675  df-pr 3676  df-op 3678  df-uni 3894  df-br 4089  df-opab 4151  df-tr 4188  df-eprel 4386  df-frfor 4428  df-frind 4429  df-wetr 4431  df-iord 4463
This theorem is referenced by:  nnwetri  7107
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