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Theorem ordwe 4485
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 4484 . 2  |-  ( Ord 
A  ->  _E  Fr  A )
2 ordelord 4298 . . . . 5  |-  ( ( Ord  A  /\  z  e.  A )  ->  Ord  z )
323ad2antr3 1148 . . . 4  |-  ( ( Ord  A  /\  (
x  e.  A  /\  y  e.  A  /\  z  e.  A )
)  ->  Ord  z )
4 ordtr1 4305 . . . . 5  |-  ( Ord  z  ->  ( (
x  e.  y  /\  y  e.  z )  ->  x  e.  z ) )
5 epel 4209 . . . . . 6  |-  ( x  _E  y  <->  x  e.  y )
6 epel 4209 . . . . . 6  |-  ( y  _E  z  <->  y  e.  z )
75, 6anbi12i 455 . . . . 5  |-  ( ( x  _E  y  /\  y  _E  z )  <->  ( x  e.  y  /\  y  e.  z )
)
8 epel 4209 . . . . 5  |-  ( x  _E  z  <->  x  e.  z )
94, 7, 83imtr4g 204 . . . 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 2513 . 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 4251 . 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 413 1  |-  ( Ord 
A  ->  _E  We  A )
Colors of variables: wff set class
Syntax hints:    -> wi 4    /\ wa 103    /\ w3a 962    e. wcel 1480   A.wral 2414   class class class wbr 3924    _E cep 4204    Fr wfr 4245    We wwe 4247   Ord word 4279
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 105  ax-ia2 106  ax-ia3 107  ax-io 698  ax-5 1423  ax-7 1424  ax-gen 1425  ax-ie1 1469  ax-ie2 1470  ax-8 1482  ax-10 1483  ax-11 1484  ax-i12 1485  ax-bndl 1486  ax-4 1487  ax-14 1492  ax-17 1506  ax-i9 1510  ax-ial 1514  ax-i5r 1515  ax-ext 2119  ax-sep 4041  ax-pow 4093  ax-pr 4126  ax-setind 4447
This theorem depends on definitions:  df-bi 116  df-3an 964  df-tru 1334  df-nf 1437  df-sb 1736  df-eu 2000  df-mo 2001  df-clab 2124  df-cleq 2130  df-clel 2133  df-nfc 2268  df-ral 2419  df-rex 2420  df-v 2683  df-un 3070  df-in 3072  df-ss 3079  df-pw 3507  df-sn 3528  df-pr 3529  df-op 3531  df-uni 3732  df-br 3925  df-opab 3985  df-tr 4022  df-eprel 4206  df-frfor 4248  df-frind 4249  df-wetr 4251  df-iord 4283
This theorem is referenced by:  nnwetri  6797
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