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Theorem ordwe 4632
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 4631 . 2  |-  ( Ord 
A  ->  _E  Fr  A )
2 ordelord 4436 . . . . 5  |-  ( ( Ord  A  /\  z  e.  A )  ->  Ord  z )
323ad2antr3 1167 . . . 4  |-  ( ( Ord  A  /\  (
x  e.  A  /\  y  e.  A  /\  z  e.  A )
)  ->  Ord  z )
4 ordtr1 4443 . . . . 5  |-  ( Ord  z  ->  ( (
x  e.  y  /\  y  e.  z )  ->  x  e.  z ) )
5 epel 4347 . . . . . 6  |-  ( x  _E  y  <->  x  e.  y )
6 epel 4347 . . . . . 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 4347 . . . . 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 2590 . 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 4389 . 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 981    e. wcel 2177   A.wral 2485   class class class wbr 4051    _E cep 4342    Fr wfr 4383    We wwe 4385   Ord word 4417
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 711  ax-5 1471  ax-7 1472  ax-gen 1473  ax-ie1 1517  ax-ie2 1518  ax-8 1528  ax-10 1529  ax-11 1530  ax-i12 1531  ax-bndl 1533  ax-4 1534  ax-17 1550  ax-i9 1554  ax-ial 1558  ax-i5r 1559  ax-14 2180  ax-ext 2188  ax-sep 4170  ax-pow 4226  ax-pr 4261  ax-setind 4593
This theorem depends on definitions:  df-bi 117  df-3an 983  df-tru 1376  df-nf 1485  df-sb 1787  df-eu 2058  df-mo 2059  df-clab 2193  df-cleq 2199  df-clel 2202  df-nfc 2338  df-ral 2490  df-rex 2491  df-v 2775  df-un 3174  df-in 3176  df-ss 3183  df-pw 3623  df-sn 3644  df-pr 3645  df-op 3647  df-uni 3857  df-br 4052  df-opab 4114  df-tr 4151  df-eprel 4344  df-frfor 4386  df-frind 4387  df-wetr 4389  df-iord 4421
This theorem is referenced by:  nnwetri  7028
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