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Theorem fdiagfn 6839
Description: Functionality of the diagonal map. (Contributed by Stefan O'Rear, 24-Jan-2015.)
Hypothesis
Ref Expression
fdiagfn.f  |-  F  =  ( x  e.  B  |->  ( I  X.  {
x } ) )
Assertion
Ref Expression
fdiagfn  |-  ( ( B  e.  V  /\  I  e.  W )  ->  F : B --> ( B  ^m  I ) )
Distinct variable groups:    x, B    x, I    x, V    x, W
Allowed substitution hint:    F( x)

Proof of Theorem fdiagfn
StepHypRef Expression
1 fconst6g 5524 . . . 4  |-  ( x  e.  B  ->  (
I  X.  { x } ) : I --> B )
21adantl 277 . . 3  |-  ( ( ( B  e.  V  /\  I  e.  W
)  /\  x  e.  B )  ->  (
I  X.  { x } ) : I --> B )
3 elmapg 6808 . . . 4  |-  ( ( B  e.  V  /\  I  e.  W )  ->  ( ( I  X.  { x } )  e.  ( B  ^m  I )  <->  ( I  X.  { x } ) : I --> B ) )
43adantr 276 . . 3  |-  ( ( ( B  e.  V  /\  I  e.  W
)  /\  x  e.  B )  ->  (
( I  X.  {
x } )  e.  ( B  ^m  I
)  <->  ( I  X.  { x } ) : I --> B ) )
52, 4mpbird 167 . 2  |-  ( ( ( B  e.  V  /\  I  e.  W
)  /\  x  e.  B )  ->  (
I  X.  { x } )  e.  ( B  ^m  I ) )
6 fdiagfn.f . 2  |-  F  =  ( x  e.  B  |->  ( I  X.  {
x } ) )
75, 6fmptd 5789 1  |-  ( ( B  e.  V  /\  I  e.  W )  ->  F : B --> ( B  ^m  I ) )
Colors of variables: wff set class
Syntax hints:    -> wi 4    /\ wa 104    <-> wb 105    = wceq 1395    e. wcel 2200   {csn 3666    |-> cmpt 4145    X. cxp 4717   -->wf 5314  (class class class)co 6001    ^m cmap 6795
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 617  ax-in2 618  ax-io 714  ax-5 1493  ax-7 1494  ax-gen 1495  ax-ie1 1539  ax-ie2 1540  ax-8 1550  ax-10 1551  ax-11 1552  ax-i12 1553  ax-bndl 1555  ax-4 1556  ax-17 1572  ax-i9 1576  ax-ial 1580  ax-i5r 1581  ax-13 2202  ax-14 2203  ax-ext 2211  ax-sep 4202  ax-pow 4258  ax-pr 4293  ax-un 4524  ax-setind 4629
This theorem depends on definitions:  df-bi 117  df-3an 1004  df-tru 1398  df-fal 1401  df-nf 1507  df-sb 1809  df-eu 2080  df-mo 2081  df-clab 2216  df-cleq 2222  df-clel 2225  df-nfc 2361  df-ne 2401  df-ral 2513  df-rex 2514  df-rab 2517  df-v 2801  df-sbc 3029  df-dif 3199  df-un 3201  df-in 3203  df-ss 3210  df-pw 3651  df-sn 3672  df-pr 3673  df-op 3675  df-uni 3889  df-br 4084  df-opab 4146  df-mpt 4147  df-id 4384  df-xp 4725  df-rel 4726  df-cnv 4727  df-co 4728  df-dm 4729  df-rn 4730  df-res 4731  df-ima 4732  df-iota 5278  df-fun 5320  df-fn 5321  df-f 5322  df-fv 5326  df-ov 6004  df-oprab 6005  df-mpo 6006  df-map 6797
This theorem is referenced by: (None)
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