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Theorem otth 4220
Description: Ordered triple theorem. (Contributed by NM, 25-Sep-2014.) (Revised by Mario Carneiro, 26-Apr-2015.)
Hypotheses
Ref Expression
otth.1  |-  A  e. 
_V
otth.2  |-  B  e. 
_V
otth.3  |-  R  e. 
_V
Assertion
Ref Expression
otth  |-  ( <. A ,  B ,  R >.  =  <. C ,  D ,  S >.  <->  ( A  =  C  /\  B  =  D  /\  R  =  S )
)

Proof of Theorem otth
StepHypRef Expression
1 df-ot 3586 . . 3  |-  <. A ,  B ,  R >.  = 
<. <. A ,  B >. ,  R >.
2 df-ot 3586 . . 3  |-  <. C ,  D ,  S >.  = 
<. <. C ,  D >. ,  S >.
31, 2eqeq12i 2179 . 2  |-  ( <. A ,  B ,  R >.  =  <. C ,  D ,  S >.  <->  <. <. A ,  B >. ,  R >.  =  <. <. C ,  D >. ,  S >. )
4 otth.1 . . 3  |-  A  e. 
_V
5 otth.2 . . 3  |-  B  e. 
_V
6 otth.3 . . 3  |-  R  e. 
_V
74, 5, 6otth2 4219 . 2  |-  ( <. <. A ,  B >. ,  R >.  =  <. <. C ,  D >. ,  S >.  <->  ( A  =  C  /\  B  =  D  /\  R  =  S ) )
83, 7bitri 183 1  |-  ( <. A ,  B ,  R >.  =  <. C ,  D ,  S >.  <->  ( A  =  C  /\  B  =  D  /\  R  =  S )
)
Colors of variables: wff set class
Syntax hints:    <-> wb 104    /\ w3a 968    = wceq 1343    e. wcel 2136   _Vcvv 2726   <.cop 3579   <.cotp 3580
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 699  ax-5 1435  ax-7 1436  ax-gen 1437  ax-ie1 1481  ax-ie2 1482  ax-8 1492  ax-10 1493  ax-11 1494  ax-i12 1495  ax-bndl 1497  ax-4 1498  ax-17 1514  ax-i9 1518  ax-ial 1522  ax-i5r 1523  ax-14 2139  ax-ext 2147  ax-sep 4100  ax-pow 4153  ax-pr 4187
This theorem depends on definitions:  df-bi 116  df-3an 970  df-tru 1346  df-nf 1449  df-sb 1751  df-clab 2152  df-cleq 2158  df-clel 2161  df-nfc 2297  df-v 2728  df-un 3120  df-in 3122  df-ss 3129  df-pw 3561  df-sn 3582  df-pr 3583  df-op 3585  df-ot 3586
This theorem is referenced by:  euotd  4232
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