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Theorem mapsnf1o3 7460
Description: Explicit bijection in the reverse of mapsnf1o2 7459. (Contributed by Stefan O'Rear, 24-Mar-2015.)
Hypotheses
Ref Expression
mapsncnv.s  |-  S  =  { X }
mapsncnv.b  |-  B  e. 
_V
mapsncnv.x  |-  X  e. 
_V
mapsnf1o3.f  |-  F  =  ( y  e.  B  |->  ( S  X.  {
y } ) )
Assertion
Ref Expression
mapsnf1o3  |-  F : B
-1-1-onto-> ( B  ^m  S )
Distinct variable groups:    y, B    y, S    y, X
Allowed substitution hint:    F( y)

Proof of Theorem mapsnf1o3
Dummy variable  x is distinct from all other variables.
StepHypRef Expression
1 mapsncnv.s . . . 4  |-  S  =  { X }
2 mapsncnv.b . . . 4  |-  B  e. 
_V
3 mapsncnv.x . . . 4  |-  X  e. 
_V
4 eqid 2454 . . . 4  |-  ( x  e.  ( B  ^m  S )  |->  ( x `
 X ) )  =  ( x  e.  ( B  ^m  S
)  |->  ( x `  X ) )
51, 2, 3, 4mapsnf1o2 7459 . . 3  |-  ( x  e.  ( B  ^m  S )  |->  ( x `
 X ) ) : ( B  ^m  S ) -1-1-onto-> B
6 f1ocnv 5810 . . 3  |-  ( ( x  e.  ( B  ^m  S )  |->  ( x `  X ) ) : ( B  ^m  S ) -1-1-onto-> B  ->  `' ( x  e.  ( B  ^m  S
)  |->  ( x `  X ) ) : B -1-1-onto-> ( B  ^m  S
) )
75, 6ax-mp 5 . 2  |-  `' ( x  e.  ( B  ^m  S )  |->  ( x `  X ) ) : B -1-1-onto-> ( B  ^m  S )
8 mapsnf1o3.f . . . 4  |-  F  =  ( y  e.  B  |->  ( S  X.  {
y } ) )
91, 2, 3, 4mapsncnv 7458 . . . 4  |-  `' ( x  e.  ( B  ^m  S )  |->  ( x `  X ) )  =  ( y  e.  B  |->  ( S  X.  { y } ) )
108, 9eqtr4i 2486 . . 3  |-  F  =  `' ( x  e.  ( B  ^m  S
)  |->  ( x `  X ) )
11 f1oeq1 5789 . . 3  |-  ( F  =  `' ( x  e.  ( B  ^m  S )  |->  ( x `
 X ) )  ->  ( F : B
-1-1-onto-> ( B  ^m  S )  <->  `' ( x  e.  ( B  ^m  S
)  |->  ( x `  X ) ) : B -1-1-onto-> ( B  ^m  S
) ) )
1210, 11ax-mp 5 . 2  |-  ( F : B -1-1-onto-> ( B  ^m  S
)  <->  `' ( x  e.  ( B  ^m  S
)  |->  ( x `  X ) ) : B -1-1-onto-> ( B  ^m  S
) )
137, 12mpbir 209 1  |-  F : B
-1-1-onto-> ( B  ^m  S )
Colors of variables: wff setvar class
Syntax hints:    <-> wb 184    = wceq 1398    e. wcel 1823   _Vcvv 3106   {csn 4016    |-> cmpt 4497    X. cxp 4986   `'ccnv 4987   -1-1-onto->wf1o 5569   ` cfv 5570  (class class class)co 6270    ^m cmap 7412
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1623  ax-4 1636  ax-5 1709  ax-6 1752  ax-7 1795  ax-8 1825  ax-9 1827  ax-10 1842  ax-11 1847  ax-12 1859  ax-13 2004  ax-ext 2432  ax-sep 4560  ax-nul 4568  ax-pow 4615  ax-pr 4676  ax-un 6565
This theorem depends on definitions:  df-bi 185  df-or 368  df-an 369  df-3an 973  df-tru 1401  df-ex 1618  df-nf 1622  df-sb 1745  df-eu 2288  df-mo 2289  df-clab 2440  df-cleq 2446  df-clel 2449  df-nfc 2604  df-ne 2651  df-ral 2809  df-rex 2810  df-reu 2811  df-rab 2813  df-v 3108  df-sbc 3325  df-csb 3421  df-dif 3464  df-un 3466  df-in 3468  df-ss 3475  df-nul 3784  df-if 3930  df-pw 4001  df-sn 4017  df-pr 4019  df-op 4023  df-uni 4236  df-iun 4317  df-br 4440  df-opab 4498  df-mpt 4499  df-id 4784  df-xp 4994  df-rel 4995  df-cnv 4996  df-co 4997  df-dm 4998  df-rn 4999  df-res 5000  df-ima 5001  df-iota 5534  df-fun 5572  df-fn 5573  df-f 5574  df-f1 5575  df-fo 5576  df-f1o 5577  df-fv 5578  df-ov 6273  df-oprab 6274  df-mpt2 6275  df-1st 6773  df-2nd 6774  df-map 7414
This theorem is referenced by:  coe1f2  18443  coe1add  18500  evls1rhmlem  18553  evl1sca  18565  pf1ind  18586  ismrer1  30574
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