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Theorem op2ndb 4804
Description: Extract the second member of an ordered pair. Theorem 5.12(ii) of [Monk1] p. 52. (See op1stb 4209 to extract the first member and op2nda 4805 for an alternate version.) (Contributed by NM, 25-Nov-2003.)
Hypotheses
Ref Expression
cnvsn.1  |-  A  e. 
_V
cnvsn.2  |-  B  e. 
_V
Assertion
Ref Expression
op2ndb  |-  |^| |^| |^| `' { <. A ,  B >. }  =  B

Proof of Theorem op2ndb
StepHypRef Expression
1 cnvsn.1 . . . . . . 7  |-  A  e. 
_V
2 cnvsn.2 . . . . . . 7  |-  B  e. 
_V
31, 2cnvsn 4803 . . . . . 6  |-  `' { <. A ,  B >. }  =  { <. B ,  A >. }
43inteqi 3619 . . . . 5  |-  |^| `' { <. A ,  B >. }  =  |^| { <. B ,  A >. }
5 opexgOLD 3965 . . . . . . 7  |-  ( ( B  e.  _V  /\  A  e.  _V )  -> 
<. B ,  A >.  e. 
_V )
62, 1, 5mp2an 402 . . . . . 6  |-  <. B ,  A >.  e.  _V
76intsn 3650 . . . . 5  |-  |^| { <. B ,  A >. }  =  <. B ,  A >.
84, 7eqtri 2060 . . . 4  |-  |^| `' { <. A ,  B >. }  =  <. B ,  A >.
98inteqi 3619 . . 3  |-  |^| |^| `' { <. A ,  B >. }  =  |^| <. B ,  A >.
109inteqi 3619 . 2  |-  |^| |^| |^| `' { <. A ,  B >. }  =  |^| |^| <. B ,  A >.
112, 1op1stb 4209 . 2  |-  |^| |^| <. B ,  A >.  =  B
1210, 11eqtri 2060 1  |-  |^| |^| |^| `' { <. A ,  B >. }  =  B
Colors of variables: wff set class
Syntax hints:    = wceq 1243    e. wcel 1393   _Vcvv 2557   {csn 3375   <.cop 3378   |^|cint 3615   `'ccnv 4344
This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-mp 7  ax-ia1 99  ax-ia2 100  ax-ia3 101  ax-io 630  ax-5 1336  ax-7 1337  ax-gen 1338  ax-ie1 1382  ax-ie2 1383  ax-8 1395  ax-10 1396  ax-11 1397  ax-i12 1398  ax-bndl 1399  ax-4 1400  ax-14 1405  ax-17 1419  ax-i9 1423  ax-ial 1427  ax-i5r 1428  ax-ext 2022  ax-sep 3875  ax-pow 3927  ax-pr 3944
This theorem depends on definitions:  df-bi 110  df-3an 887  df-tru 1246  df-nf 1350  df-sb 1646  df-eu 1903  df-mo 1904  df-clab 2027  df-cleq 2033  df-clel 2036  df-nfc 2167  df-ral 2311  df-rex 2312  df-v 2559  df-un 2922  df-in 2924  df-ss 2931  df-pw 3361  df-sn 3381  df-pr 3382  df-op 3384  df-int 3616  df-br 3765  df-opab 3819  df-xp 4351  df-rel 4352  df-cnv 4353
This theorem is referenced by:  2ndval2  5783
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