ILE Home Intuitionistic Logic Explorer < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  ILE Home  >  Th. List  >  relsnop Unicode version

Theorem relsnop 4717
Description: A singleton of an ordered pair is a relation. (Contributed by NM, 17-May-1998.) (Revised by Mario Carneiro, 26-Apr-2015.)
Hypotheses
Ref Expression
relsn.1  |-  A  e. 
_V
relsnop.2  |-  B  e. 
_V
Assertion
Ref Expression
relsnop  |-  Rel  { <. A ,  B >. }

Proof of Theorem relsnop
StepHypRef Expression
1 relsn.1 . . 3  |-  A  e. 
_V
2 relsnop.2 . . 3  |-  B  e. 
_V
31, 2opelvv 4661 . 2  |-  <. A ,  B >.  e.  ( _V 
X.  _V )
41, 2opex 4214 . . 3  |-  <. A ,  B >.  e.  _V
54relsn 4716 . 2  |-  ( Rel 
{ <. A ,  B >. }  <->  <. A ,  B >.  e.  ( _V  X.  _V ) )
63, 5mpbir 145 1  |-  Rel  { <. A ,  B >. }
Colors of variables: wff set class
Syntax hints:    e. wcel 2141   _Vcvv 2730   {csn 3583   <.cop 3586    X. cxp 4609   Rel wrel 4616
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 704  ax-5 1440  ax-7 1441  ax-gen 1442  ax-ie1 1486  ax-ie2 1487  ax-8 1497  ax-10 1498  ax-11 1499  ax-i12 1500  ax-bndl 1502  ax-4 1503  ax-17 1519  ax-i9 1523  ax-ial 1527  ax-i5r 1528  ax-14 2144  ax-ext 2152  ax-sep 4107  ax-pow 4160  ax-pr 4194
This theorem depends on definitions:  df-bi 116  df-3an 975  df-tru 1351  df-nf 1454  df-sb 1756  df-clab 2157  df-cleq 2163  df-clel 2166  df-nfc 2301  df-ral 2453  df-rex 2454  df-v 2732  df-un 3125  df-in 3127  df-ss 3134  df-pw 3568  df-sn 3589  df-pr 3590  df-op 3592  df-opab 4051  df-xp 4617  df-rel 4618
This theorem is referenced by:  cnvsn  5093  fsn  5668
  Copyright terms: Public domain W3C validator