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Theorem fprg 5889
Description: A function with a domain of two elements. (Contributed by FL, 2-Feb-2014.)
Assertion
Ref Expression
fprg  |-  ( ( ( A  e.  E  /\  B  e.  F
)  /\  ( C  e.  G  /\  D  e.  H )  /\  A  =/=  B )  ->  { <. A ,  C >. ,  <. B ,  D >. } : { A ,  B } --> { C ,  D }
)

Proof of Theorem fprg
StepHypRef Expression
1 fnprg 5431 . 2  |-  ( ( ( A  e.  E  /\  B  e.  F
)  /\  ( C  e.  G  /\  D  e.  H )  /\  A  =/=  B )  ->  { <. A ,  C >. ,  <. B ,  D >. }  Fn  { A ,  B }
)
2 rnsnopg 5261 . . . . . . 7  |-  ( A  e.  E  ->  ran  {
<. A ,  C >. }  =  { C }
)
32adantr 276 . . . . . 6  |-  ( ( A  e.  E  /\  B  e.  F )  ->  ran  { <. A ,  C >. }  =  { C } )
433ad2ant1 1049 . . . . 5  |-  ( ( ( A  e.  E  /\  B  e.  F
)  /\  ( C  e.  G  /\  D  e.  H )  /\  A  =/=  B )  ->  ran  {
<. A ,  C >. }  =  { C }
)
5 rnsnopg 5261 . . . . . . 7  |-  ( B  e.  F  ->  ran  {
<. B ,  D >. }  =  { D }
)
65adantl 277 . . . . . 6  |-  ( ( A  e.  E  /\  B  e.  F )  ->  ran  { <. B ,  D >. }  =  { D } )
763ad2ant1 1049 . . . . 5  |-  ( ( ( A  e.  E  /\  B  e.  F
)  /\  ( C  e.  G  /\  D  e.  H )  /\  A  =/=  B )  ->  ran  {
<. B ,  D >. }  =  { D }
)
84, 7uneq12d 3384 . . . 4  |-  ( ( ( A  e.  E  /\  B  e.  F
)  /\  ( C  e.  G  /\  D  e.  H )  /\  A  =/=  B )  ->  ( ran  { <. A ,  C >. }  u.  ran  { <. B ,  D >. } )  =  ( { C }  u.  { D } ) )
9 df-pr 3712 . . . . . 6  |-  { <. A ,  C >. ,  <. B ,  D >. }  =  ( { <. A ,  C >. }  u.  { <. B ,  D >. } )
109rneqi 5005 . . . . 5  |-  ran  { <. A ,  C >. , 
<. B ,  D >. }  =  ran  ( {
<. A ,  C >. }  u.  { <. B ,  D >. } )
11 rnun 5191 . . . . 5  |-  ran  ( { <. A ,  C >. }  u.  { <. B ,  D >. } )  =  ( ran  { <. A ,  C >. }  u.  ran  { <. B ,  D >. } )
1210, 11eqtri 2259 . . . 4  |-  ran  { <. A ,  C >. , 
<. B ,  D >. }  =  ( ran  { <. A ,  C >. }  u.  ran  { <. B ,  D >. } )
13 df-pr 3712 . . . 4  |-  { C ,  D }  =  ( { C }  u.  { D } )
148, 12, 133eqtr4g 2296 . . 3  |-  ( ( ( A  e.  E  /\  B  e.  F
)  /\  ( C  e.  G  /\  D  e.  H )  /\  A  =/=  B )  ->  ran  {
<. A ,  C >. , 
<. B ,  D >. }  =  { C ,  D } )
15 eqimss 3302 . . 3  |-  ( ran 
{ <. A ,  C >. ,  <. B ,  D >. }  =  { C ,  D }  ->  ran  {
<. A ,  C >. , 
<. B ,  D >. } 
C_  { C ,  D } )
1614, 15syl 14 . 2  |-  ( ( ( A  e.  E  /\  B  e.  F
)  /\  ( C  e.  G  /\  D  e.  H )  /\  A  =/=  B )  ->  ran  {
<. A ,  C >. , 
<. B ,  D >. } 
C_  { C ,  D } )
17 df-f 5376 . 2  |-  ( {
<. A ,  C >. , 
<. B ,  D >. } : { A ,  B } --> { C ,  D }  <->  ( { <. A ,  C >. ,  <. B ,  D >. }  Fn  { A ,  B }  /\  ran  { <. A ,  C >. ,  <. B ,  D >. }  C_  { C ,  D } ) )
181, 16, 17sylanbrc 421 1  |-  ( ( ( A  e.  E  /\  B  e.  F
)  /\  ( C  e.  G  /\  D  e.  H )  /\  A  =/=  B )  ->  { <. A ,  C >. ,  <. B ,  D >. } : { A ,  B } --> { C ,  D }
)
Colors of variables: wff set class
Syntax hints:    -> wi 4    /\ wa 104    /\ w3a 1009    = wceq 1402    e. wcel 2209    =/= wne 2420    u. cun 3218    C_ wss 3220   {csn 3705   {cpr 3706   <.cop 3708   ran crn 4770    Fn wfn 5367   -->wf 5368
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-in1 623  ax-in2 624  ax-io 721  ax-5 1500  ax-7 1501  ax-gen 1502  ax-ie1 1546  ax-ie2 1547  ax-8 1557  ax-10 1558  ax-11 1559  ax-i12 1560  ax-bndl 1562  ax-4 1563  ax-17 1579  ax-i9 1583  ax-ial 1587  ax-i5r 1588  ax-14 2212  ax-ext 2220  ax-sep 4244  ax-pow 4306  ax-pr 4341
This theorem depends on definitions:  df-bi 117  df-3an 1011  df-tru 1405  df-fal 1408  df-nf 1514  df-sb 1816  df-eu 2089  df-mo 2090  df-clab 2225  df-cleq 2231  df-clel 2234  df-nfc 2381  df-ne 2421  df-ral 2533  df-rex 2534  df-v 2823  df-dif 3222  df-un 3224  df-in 3226  df-ss 3233  df-nul 3521  df-pw 3687  df-sn 3711  df-pr 3712  df-op 3714  df-br 4126  df-opab 4188  df-id 4433  df-xp 4775  df-rel 4776  df-cnv 4777  df-co 4778  df-dm 4779  df-rn 4780  df-fun 5374  df-fn 5375  df-f 5376
This theorem is referenced by:  ftpg  5890
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