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Theorem fvtp1 5897
Description: The first value of a function with a domain of three elements. (Contributed by NM, 14-Sep-2011.)
Hypotheses
Ref Expression
fvtp1.1  |-  A  e. 
_V
fvtp1.4  |-  D  e. 
_V
Assertion
Ref Expression
fvtp1  |-  ( ( A  =/=  B  /\  A  =/=  C )  -> 
( { <. A ,  D >. ,  <. B ,  E >. ,  <. C ,  F >. } `  A
)  =  D )

Proof of Theorem fvtp1
StepHypRef Expression
1 fvtp1.1 . 2  |-  A  e. 
_V
2 fvtp1.4 . 2  |-  D  e. 
_V
3 fvtp1g 5894 . 2  |-  ( ( ( A  e.  _V  /\  D  e.  _V )  /\  ( A  =/=  B  /\  A  =/=  C
) )  ->  ( { <. A ,  D >. ,  <. B ,  E >. ,  <. C ,  F >. } `  A )  =  D )
41, 2, 3mpanl12 436 1  |-  ( ( A  =/=  B  /\  A  =/=  C )  -> 
( { <. A ,  D >. ,  <. B ,  E >. ,  <. C ,  F >. } `  A
)  =  D )
Colors of variables: wff set class
Syntax hints:    -> wi 4    /\ wa 104    = wceq 1398    e. wcel 2205    =/= wne 2414   _Vcvv 2815   {ctp 3693   <.cop 3694   ` cfv 5354
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 619  ax-in2 620  ax-io 717  ax-5 1496  ax-7 1497  ax-gen 1498  ax-ie1 1542  ax-ie2 1543  ax-8 1553  ax-10 1554  ax-11 1555  ax-i12 1556  ax-bndl 1558  ax-4 1559  ax-17 1575  ax-i9 1579  ax-ial 1583  ax-i5r 1584  ax-14 2208  ax-ext 2216  ax-sep 4230  ax-pow 4289  ax-pr 4324
This theorem depends on definitions:  df-bi 117  df-3an 1007  df-tru 1401  df-fal 1404  df-nf 1510  df-sb 1812  df-eu 2085  df-mo 2086  df-clab 2221  df-cleq 2227  df-clel 2230  df-nfc 2375  df-ne 2415  df-ral 2527  df-rex 2528  df-v 2817  df-sbc 3045  df-dif 3215  df-un 3217  df-in 3219  df-ss 3226  df-nul 3511  df-pw 3673  df-sn 3697  df-pr 3698  df-tp 3699  df-op 3700  df-uni 3917  df-br 4112  df-opab 4174  df-id 4416  df-xp 4757  df-rel 4758  df-cnv 4759  df-co 4760  df-dm 4761  df-res 4763  df-iota 5314  df-fun 5356  df-fv 5362
This theorem is referenced by:  fvtp2  5898
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