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Theorem pcopt2 21251
Description: Concatenation with a point does not affect homotopy class. (Contributed by Mario Carneiro, 12-Feb-2015.)
Hypothesis
Ref Expression
pcopt.1  |-  P  =  ( ( 0 [,] 1 )  X.  { Y } )
Assertion
Ref Expression
pcopt2  |-  ( ( F  e.  ( II 
Cn  J )  /\  ( F `  1 )  =  Y )  -> 
( F ( *p
`  J ) P ) (  ~=ph  `  J
) F )

Proof of Theorem pcopt2
Dummy variables  x  y  z are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 pcopt.1 . . . . . . . . 9  |-  P  =  ( ( 0 [,] 1 )  X.  { Y } )
21fveq1i 5858 . . . . . . . 8  |-  ( P `
 ( ( 2  x.  x )  - 
1 ) )  =  ( ( ( 0 [,] 1 )  X. 
{ Y } ) `
 ( ( 2  x.  x )  - 
1 ) )
3 simpr 461 . . . . . . . . . 10  |-  ( ( F  e.  ( II 
Cn  J )  /\  ( F `  1 )  =  Y )  -> 
( F `  1
)  =  Y )
4 iiuni 21113 . . . . . . . . . . . . 13  |-  ( 0 [,] 1 )  = 
U. II
5 eqid 2460 . . . . . . . . . . . . 13  |-  U. J  =  U. J
64, 5cnf 19506 . . . . . . . . . . . 12  |-  ( F  e.  ( II  Cn  J )  ->  F : ( 0 [,] 1 ) --> U. J
)
76adantr 465 . . . . . . . . . . 11  |-  ( ( F  e.  ( II 
Cn  J )  /\  ( F `  1 )  =  Y )  ->  F : ( 0 [,] 1 ) --> U. J
)
8 1elunit 11628 . . . . . . . . . . 11  |-  1  e.  ( 0 [,] 1
)
9 ffvelrn 6010 . . . . . . . . . . 11  |-  ( ( F : ( 0 [,] 1 ) --> U. J  /\  1  e.  ( 0 [,] 1
) )  ->  ( F `  1 )  e.  U. J )
107, 8, 9sylancl 662 . . . . . . . . . 10  |-  ( ( F  e.  ( II 
Cn  J )  /\  ( F `  1 )  =  Y )  -> 
( F `  1
)  e.  U. J
)
113, 10eqeltrrd 2549 . . . . . . . . 9  |-  ( ( F  e.  ( II 
Cn  J )  /\  ( F `  1 )  =  Y )  ->  Y  e.  U. J )
12 elii2 21164 . . . . . . . . . 10  |-  ( ( x  e.  ( 0 [,] 1 )  /\  -.  x  <_  ( 1  /  2 ) )  ->  x  e.  ( ( 1  /  2
) [,] 1 ) )
13 iihalf2 21161 . . . . . . . . . 10  |-  ( x  e.  ( ( 1  /  2 ) [,] 1 )  ->  (
( 2  x.  x
)  -  1 )  e.  ( 0 [,] 1 ) )
1412, 13syl 16 . . . . . . . . 9  |-  ( ( x  e.  ( 0 [,] 1 )  /\  -.  x  <_  ( 1  /  2 ) )  ->  ( ( 2  x.  x )  - 
1 )  e.  ( 0 [,] 1 ) )
15 fvconst2g 6105 . . . . . . . . 9  |-  ( ( Y  e.  U. J  /\  ( ( 2  x.  x )  -  1 )  e.  ( 0 [,] 1 ) )  ->  ( ( ( 0 [,] 1 )  X.  { Y }
) `  ( (
2  x.  x )  -  1 ) )  =  Y )
1611, 14, 15syl2an 477 . . . . . . . 8  |-  ( ( ( F  e.  ( II  Cn  J )  /\  ( F ` 
1 )  =  Y )  /\  ( x  e.  ( 0 [,] 1 )  /\  -.  x  <_  ( 1  / 
2 ) ) )  ->  ( ( ( 0 [,] 1 )  X.  { Y }
) `  ( (
2  x.  x )  -  1 ) )  =  Y )
172, 16syl5eq 2513 . . . . . . 7  |-  ( ( ( F  e.  ( II  Cn  J )  /\  ( F ` 
1 )  =  Y )  /\  ( x  e.  ( 0 [,] 1 )  /\  -.  x  <_  ( 1  / 
2 ) ) )  ->  ( P `  ( ( 2  x.  x )  -  1 ) )  =  Y )
18 simplr 754 . . . . . . 7  |-  ( ( ( F  e.  ( II  Cn  J )  /\  ( F ` 
1 )  =  Y )  /\  ( x  e.  ( 0 [,] 1 )  /\  -.  x  <_  ( 1  / 
2 ) ) )  ->  ( F ` 
1 )  =  Y )
1917, 18eqtr4d 2504 . . . . . 6  |-  ( ( ( F  e.  ( II  Cn  J )  /\  ( F ` 
1 )  =  Y )  /\  ( x  e.  ( 0 [,] 1 )  /\  -.  x  <_  ( 1  / 
2 ) ) )  ->  ( P `  ( ( 2  x.  x )  -  1 ) )  =  ( F `  1 ) )
2019anassrs 648 . . . . 5  |-  ( ( ( ( F  e.  ( II  Cn  J
)  /\  ( F `  1 )  =  Y )  /\  x  e.  ( 0 [,] 1
) )  /\  -.  x  <_  ( 1  / 
2 ) )  -> 
( P `  (
( 2  x.  x
)  -  1 ) )  =  ( F `
 1 ) )
2120ifeq2da 3963 . . . 4  |-  ( ( ( F  e.  ( II  Cn  J )  /\  ( F ` 
1 )  =  Y )  /\  x  e.  ( 0 [,] 1
) )  ->  if ( x  <_  ( 1  /  2 ) ,  ( F `  (
2  x.  x ) ) ,  ( P `
 ( ( 2  x.  x )  - 
1 ) ) )  =  if ( x  <_  ( 1  / 
2 ) ,  ( F `  ( 2  x.  x ) ) ,  ( F ` 
1 ) ) )
2221mpteq2dva 4526 . . 3  |-  ( ( F  e.  ( II 
Cn  J )  /\  ( F `  1 )  =  Y )  -> 
( x  e.  ( 0 [,] 1 ) 
|->  if ( x  <_ 
( 1  /  2
) ,  ( F `
 ( 2  x.  x ) ) ,  ( P `  (
( 2  x.  x
)  -  1 ) ) ) )  =  ( x  e.  ( 0 [,] 1 ) 
|->  if ( x  <_ 
( 1  /  2
) ,  ( F `
 ( 2  x.  x ) ) ,  ( F `  1
) ) ) )
23 simpl 457 . . . 4  |-  ( ( F  e.  ( II 
Cn  J )  /\  ( F `  1 )  =  Y )  ->  F  e.  ( II  Cn  J ) )
24 cntop2 19501 . . . . . . . 8  |-  ( F  e.  ( II  Cn  J )  ->  J  e.  Top )
2524adantr 465 . . . . . . 7  |-  ( ( F  e.  ( II 
Cn  J )  /\  ( F `  1 )  =  Y )  ->  J  e.  Top )
265toptopon 19194 . . . . . . 7  |-  ( J  e.  Top  <->  J  e.  (TopOn `  U. J ) )
2725, 26sylib 196 . . . . . 6  |-  ( ( F  e.  ( II 
Cn  J )  /\  ( F `  1 )  =  Y )  ->  J  e.  (TopOn `  U. J ) )
281pcoptcl 21249 . . . . . 6  |-  ( ( J  e.  (TopOn `  U. J )  /\  Y  e.  U. J )  -> 
( P  e.  ( II  Cn  J )  /\  ( P ` 
0 )  =  Y  /\  ( P ` 
1 )  =  Y ) )
2927, 11, 28syl2anc 661 . . . . 5  |-  ( ( F  e.  ( II 
Cn  J )  /\  ( F `  1 )  =  Y )  -> 
( P  e.  ( II  Cn  J )  /\  ( P ` 
0 )  =  Y  /\  ( P ` 
1 )  =  Y ) )
3029simp1d 1003 . . . 4  |-  ( ( F  e.  ( II 
Cn  J )  /\  ( F `  1 )  =  Y )  ->  P  e.  ( II  Cn  J ) )
3123, 30pcoval 21239 . . 3  |-  ( ( F  e.  ( II 
Cn  J )  /\  ( F `  1 )  =  Y )  -> 
( F ( *p
`  J ) P )  =  ( x  e.  ( 0 [,] 1 )  |->  if ( x  <_  ( 1  /  2 ) ,  ( F `  (
2  x.  x ) ) ,  ( P `
 ( ( 2  x.  x )  - 
1 ) ) ) ) )
32 iftrue 3938 . . . . . . . . 9  |-  ( x  <_  ( 1  / 
2 )  ->  if ( x  <_  ( 1  /  2 ) ,  ( 2  x.  x
) ,  1 )  =  ( 2  x.  x ) )
3332adantl 466 . . . . . . . 8  |-  ( ( x  e.  ( 0 [,] 1 )  /\  x  <_  ( 1  / 
2 ) )  ->  if ( x  <_  (
1  /  2 ) ,  ( 2  x.  x ) ,  1 )  =  ( 2  x.  x ) )
34 elii1 21163 . . . . . . . . 9  |-  ( x  e.  ( 0 [,] ( 1  /  2
) )  <->  ( x  e.  ( 0 [,] 1
)  /\  x  <_  ( 1  /  2 ) ) )
35 iihalf1 21159 . . . . . . . . 9  |-  ( x  e.  ( 0 [,] ( 1  /  2
) )  ->  (
2  x.  x )  e.  ( 0 [,] 1 ) )
3634, 35sylbir 213 . . . . . . . 8  |-  ( ( x  e.  ( 0 [,] 1 )  /\  x  <_  ( 1  / 
2 ) )  -> 
( 2  x.  x
)  e.  ( 0 [,] 1 ) )
3733, 36eqeltrd 2548 . . . . . . 7  |-  ( ( x  e.  ( 0 [,] 1 )  /\  x  <_  ( 1  / 
2 ) )  ->  if ( x  <_  (
1  /  2 ) ,  ( 2  x.  x ) ,  1 )  e.  ( 0 [,] 1 ) )
3837ex 434 . . . . . 6  |-  ( x  e.  ( 0 [,] 1 )  ->  (
x  <_  ( 1  /  2 )  ->  if ( x  <_  (
1  /  2 ) ,  ( 2  x.  x ) ,  1 )  e.  ( 0 [,] 1 ) ) )
39 iffalse 3941 . . . . . . 7  |-  ( -.  x  <_  ( 1  /  2 )  ->  if ( x  <_  (
1  /  2 ) ,  ( 2  x.  x ) ,  1 )  =  1 )
4039, 8syl6eqel 2556 . . . . . 6  |-  ( -.  x  <_  ( 1  /  2 )  ->  if ( x  <_  (
1  /  2 ) ,  ( 2  x.  x ) ,  1 )  e.  ( 0 [,] 1 ) )
4138, 40pm2.61d1 159 . . . . 5  |-  ( x  e.  ( 0 [,] 1 )  ->  if ( x  <_  ( 1  /  2 ) ,  ( 2  x.  x
) ,  1 )  e.  ( 0 [,] 1 ) )
4241adantl 466 . . . 4  |-  ( ( ( F  e.  ( II  Cn  J )  /\  ( F ` 
1 )  =  Y )  /\  x  e.  ( 0 [,] 1
) )  ->  if ( x  <_  ( 1  /  2 ) ,  ( 2  x.  x
) ,  1 )  e.  ( 0 [,] 1 ) )
43 eqidd 2461 . . . 4  |-  ( ( F  e.  ( II 
Cn  J )  /\  ( F `  1 )  =  Y )  -> 
( x  e.  ( 0 [,] 1 ) 
|->  if ( x  <_ 
( 1  /  2
) ,  ( 2  x.  x ) ,  1 ) )  =  ( x  e.  ( 0 [,] 1 ) 
|->  if ( x  <_ 
( 1  /  2
) ,  ( 2  x.  x ) ,  1 ) ) )
447feqmptd 5911 . . . 4  |-  ( ( F  e.  ( II 
Cn  J )  /\  ( F `  1 )  =  Y )  ->  F  =  ( y  e.  ( 0 [,] 1
)  |->  ( F `  y ) ) )
45 fveq2 5857 . . . . 5  |-  ( y  =  if ( x  <_  ( 1  / 
2 ) ,  ( 2  x.  x ) ,  1 )  -> 
( F `  y
)  =  ( F `
 if ( x  <_  ( 1  / 
2 ) ,  ( 2  x.  x ) ,  1 ) ) )
46 fvif 5868 . . . . 5  |-  ( F `
 if ( x  <_  ( 1  / 
2 ) ,  ( 2  x.  x ) ,  1 ) )  =  if ( x  <_  ( 1  / 
2 ) ,  ( F `  ( 2  x.  x ) ) ,  ( F ` 
1 ) )
4745, 46syl6eq 2517 . . . 4  |-  ( y  =  if ( x  <_  ( 1  / 
2 ) ,  ( 2  x.  x ) ,  1 )  -> 
( F `  y
)  =  if ( x  <_  ( 1  /  2 ) ,  ( F `  (
2  x.  x ) ) ,  ( F `
 1 ) ) )
4842, 43, 44, 47fmptco 6045 . . 3  |-  ( ( F  e.  ( II 
Cn  J )  /\  ( F `  1 )  =  Y )  -> 
( F  o.  (
x  e.  ( 0 [,] 1 )  |->  if ( x  <_  (
1  /  2 ) ,  ( 2  x.  x ) ,  1 ) ) )  =  ( x  e.  ( 0 [,] 1 ) 
|->  if ( x  <_ 
( 1  /  2
) ,  ( F `
 ( 2  x.  x ) ) ,  ( F `  1
) ) ) )
4922, 31, 483eqtr4d 2511 . 2  |-  ( ( F  e.  ( II 
Cn  J )  /\  ( F `  1 )  =  Y )  -> 
( F ( *p
`  J ) P )  =  ( F  o.  ( x  e.  ( 0 [,] 1
)  |->  if ( x  <_  ( 1  / 
2 ) ,  ( 2  x.  x ) ,  1 ) ) ) )
50 iitopon 21111 . . . . 5  |-  II  e.  (TopOn `  ( 0 [,] 1 ) )
5150a1i 11 . . . 4  |-  ( ( F  e.  ( II 
Cn  J )  /\  ( F `  1 )  =  Y )  ->  II  e.  (TopOn `  (
0 [,] 1 ) ) )
5251cnmptid 19890 . . . 4  |-  ( ( F  e.  ( II 
Cn  J )  /\  ( F `  1 )  =  Y )  -> 
( x  e.  ( 0 [,] 1 ) 
|->  x )  e.  ( II  Cn  II ) )
53 0elunit 11627 . . . . . 6  |-  0  e.  ( 0 [,] 1
)
5453a1i 11 . . . . 5  |-  ( ( F  e.  ( II 
Cn  J )  /\  ( F `  1 )  =  Y )  -> 
0  e.  ( 0 [,] 1 ) )
5551, 51, 54cnmptc 19891 . . . 4  |-  ( ( F  e.  ( II 
Cn  J )  /\  ( F `  1 )  =  Y )  -> 
( x  e.  ( 0 [,] 1 ) 
|->  0 )  e.  ( II  Cn  II ) )
56 eqid 2460 . . . . 5  |-  ( topGen ` 
ran  (,) )  =  (
topGen `  ran  (,) )
57 eqid 2460 . . . . 5  |-  ( (
topGen `  ran  (,) )t  (
0 [,] ( 1  /  2 ) ) )  =  ( (
topGen `  ran  (,) )t  (
0 [,] ( 1  /  2 ) ) )
58 eqid 2460 . . . . 5  |-  ( (
topGen `  ran  (,) )t  (
( 1  /  2
) [,] 1 ) )  =  ( (
topGen `  ran  (,) )t  (
( 1  /  2
) [,] 1 ) )
59 dfii2 21114 . . . . 5  |-  II  =  ( ( topGen `  ran  (,) )t  ( 0 [,] 1
) )
60 0re 9585 . . . . . 6  |-  0  e.  RR
6160a1i 11 . . . . 5  |-  ( ( F  e.  ( II 
Cn  J )  /\  ( F `  1 )  =  Y )  -> 
0  e.  RR )
62 1re 9584 . . . . . 6  |-  1  e.  RR
6362a1i 11 . . . . 5  |-  ( ( F  e.  ( II 
Cn  J )  /\  ( F `  1 )  =  Y )  -> 
1  e.  RR )
64 halfre 10743 . . . . . . 7  |-  ( 1  /  2 )  e.  RR
65 halfgt0 10745 . . . . . . . 8  |-  0  <  ( 1  /  2
)
6660, 64, 65ltleii 9696 . . . . . . 7  |-  0  <_  ( 1  /  2
)
67 halflt1 10746 . . . . . . . 8  |-  ( 1  /  2 )  <  1
6864, 62, 67ltleii 9696 . . . . . . 7  |-  ( 1  /  2 )  <_ 
1
6960, 62elicc2i 11579 . . . . . . 7  |-  ( ( 1  /  2 )  e.  ( 0 [,] 1 )  <->  ( (
1  /  2 )  e.  RR  /\  0  <_  ( 1  /  2
)  /\  ( 1  /  2 )  <_ 
1 ) )
7064, 66, 68, 69mpbir3an 1173 . . . . . 6  |-  ( 1  /  2 )  e.  ( 0 [,] 1
)
7170a1i 11 . . . . 5  |-  ( ( F  e.  ( II 
Cn  J )  /\  ( F `  1 )  =  Y )  -> 
( 1  /  2
)  e.  ( 0 [,] 1 ) )
72 simprl 755 . . . . . . 7  |-  ( ( ( F  e.  ( II  Cn  J )  /\  ( F ` 
1 )  =  Y )  /\  ( y  =  ( 1  / 
2 )  /\  z  e.  ( 0 [,] 1
) ) )  -> 
y  =  ( 1  /  2 ) )
7372oveq2d 6291 . . . . . 6  |-  ( ( ( F  e.  ( II  Cn  J )  /\  ( F ` 
1 )  =  Y )  /\  ( y  =  ( 1  / 
2 )  /\  z  e.  ( 0 [,] 1
) ) )  -> 
( 2  x.  y
)  =  ( 2  x.  ( 1  / 
2 ) ) )
74 2cn 10595 . . . . . . 7  |-  2  e.  CC
75 2ne0 10617 . . . . . . 7  |-  2  =/=  0
7674, 75recidi 10264 . . . . . 6  |-  ( 2  x.  ( 1  / 
2 ) )  =  1
7773, 76syl6eq 2517 . . . . 5  |-  ( ( ( F  e.  ( II  Cn  J )  /\  ( F ` 
1 )  =  Y )  /\  ( y  =  ( 1  / 
2 )  /\  z  e.  ( 0 [,] 1
) ) )  -> 
( 2  x.  y
)  =  1 )
78 retopon 20998 . . . . . . . 8  |-  ( topGen ` 
ran  (,) )  e.  (TopOn `  RR )
79 iccssre 11595 . . . . . . . . 9  |-  ( ( 0  e.  RR  /\  ( 1  /  2
)  e.  RR )  ->  ( 0 [,] ( 1  /  2
) )  C_  RR )
8060, 64, 79mp2an 672 . . . . . . . 8  |-  ( 0 [,] ( 1  / 
2 ) )  C_  RR
81 resttopon 19421 . . . . . . . 8  |-  ( ( ( topGen `  ran  (,) )  e.  (TopOn `  RR )  /\  ( 0 [,] (
1  /  2 ) )  C_  RR )  ->  ( ( topGen `  ran  (,) )t  ( 0 [,] (
1  /  2 ) ) )  e.  (TopOn `  ( 0 [,] (
1  /  2 ) ) ) )
8278, 80, 81mp2an 672 . . . . . . 7  |-  ( (
topGen `  ran  (,) )t  (
0 [,] ( 1  /  2 ) ) )  e.  (TopOn `  ( 0 [,] (
1  /  2 ) ) )
8382a1i 11 . . . . . 6  |-  ( ( F  e.  ( II 
Cn  J )  /\  ( F `  1 )  =  Y )  -> 
( ( topGen `  ran  (,) )t  ( 0 [,] (
1  /  2 ) ) )  e.  (TopOn `  ( 0 [,] (
1  /  2 ) ) ) )
8483, 51cnmpt1st 19897 . . . . . 6  |-  ( ( F  e.  ( II 
Cn  J )  /\  ( F `  1 )  =  Y )  -> 
( y  e.  ( 0 [,] ( 1  /  2 ) ) ,  z  e.  ( 0 [,] 1 ) 
|->  y )  e.  ( ( ( ( topGen ` 
ran  (,) )t  ( 0 [,] ( 1  /  2
) ) )  tX  II )  Cn  (
( topGen `  ran  (,) )t  (
0 [,] ( 1  /  2 ) ) ) ) )
8557iihalf1cn 21160 . . . . . . 7  |-  ( x  e.  ( 0 [,] ( 1  /  2
) )  |->  ( 2  x.  x ) )  e.  ( ( (
topGen `  ran  (,) )t  (
0 [,] ( 1  /  2 ) ) )  Cn  II )
8685a1i 11 . . . . . 6  |-  ( ( F  e.  ( II 
Cn  J )  /\  ( F `  1 )  =  Y )  -> 
( x  e.  ( 0 [,] ( 1  /  2 ) ) 
|->  ( 2  x.  x
) )  e.  ( ( ( topGen `  ran  (,) )t  ( 0 [,] (
1  /  2 ) ) )  Cn  II ) )
87 oveq2 6283 . . . . . 6  |-  ( x  =  y  ->  (
2  x.  x )  =  ( 2  x.  y ) )
8883, 51, 84, 83, 86, 87cnmpt21 19900 . . . . 5  |-  ( ( F  e.  ( II 
Cn  J )  /\  ( F `  1 )  =  Y )  -> 
( y  e.  ( 0 [,] ( 1  /  2 ) ) ,  z  e.  ( 0 [,] 1 ) 
|->  ( 2  x.  y
) )  e.  ( ( ( ( topGen ` 
ran  (,) )t  ( 0 [,] ( 1  /  2
) ) )  tX  II )  Cn  II ) )
89 iccssre 11595 . . . . . . . . 9  |-  ( ( ( 1  /  2
)  e.  RR  /\  1  e.  RR )  ->  ( ( 1  / 
2 ) [,] 1
)  C_  RR )
9064, 62, 89mp2an 672 . . . . . . . 8  |-  ( ( 1  /  2 ) [,] 1 )  C_  RR
91 resttopon 19421 . . . . . . . 8  |-  ( ( ( topGen `  ran  (,) )  e.  (TopOn `  RR )  /\  ( ( 1  / 
2 ) [,] 1
)  C_  RR )  ->  ( ( topGen `  ran  (,) )t  ( ( 1  / 
2 ) [,] 1
) )  e.  (TopOn `  ( ( 1  / 
2 ) [,] 1
) ) )
9278, 90, 91mp2an 672 . . . . . . 7  |-  ( (
topGen `  ran  (,) )t  (
( 1  /  2
) [,] 1 ) )  e.  (TopOn `  ( ( 1  / 
2 ) [,] 1
) )
9392a1i 11 . . . . . 6  |-  ( ( F  e.  ( II 
Cn  J )  /\  ( F `  1 )  =  Y )  -> 
( ( topGen `  ran  (,) )t  ( ( 1  / 
2 ) [,] 1
) )  e.  (TopOn `  ( ( 1  / 
2 ) [,] 1
) ) )
948a1i 11 . . . . . 6  |-  ( ( F  e.  ( II 
Cn  J )  /\  ( F `  1 )  =  Y )  -> 
1  e.  ( 0 [,] 1 ) )
9593, 51, 51, 94cnmpt2c 19899 . . . . 5  |-  ( ( F  e.  ( II 
Cn  J )  /\  ( F `  1 )  =  Y )  -> 
( y  e.  ( ( 1  /  2
) [,] 1 ) ,  z  e.  ( 0 [,] 1 ) 
|->  1 )  e.  ( ( ( ( topGen ` 
ran  (,) )t  ( ( 1  /  2 ) [,] 1 ) )  tX  II )  Cn  II ) )
9656, 57, 58, 59, 61, 63, 71, 51, 77, 88, 95cnmpt2pc 21156 . . . 4  |-  ( ( F  e.  ( II 
Cn  J )  /\  ( F `  1 )  =  Y )  -> 
( y  e.  ( 0 [,] 1 ) ,  z  e.  ( 0 [,] 1 ) 
|->  if ( y  <_ 
( 1  /  2
) ,  ( 2  x.  y ) ,  1 ) )  e.  ( ( II  tX  II )  Cn  II ) )
97 breq1 4443 . . . . . 6  |-  ( y  =  x  ->  (
y  <_  ( 1  /  2 )  <->  x  <_  ( 1  /  2 ) ) )
98 oveq2 6283 . . . . . 6  |-  ( y  =  x  ->  (
2  x.  y )  =  ( 2  x.  x ) )
9997, 98ifbieq1d 3955 . . . . 5  |-  ( y  =  x  ->  if ( y  <_  (
1  /  2 ) ,  ( 2  x.  y ) ,  1 )  =  if ( x  <_  ( 1  /  2 ) ,  ( 2  x.  x
) ,  1 ) )
10099adantr 465 . . . 4  |-  ( ( y  =  x  /\  z  =  0 )  ->  if ( y  <_  ( 1  / 
2 ) ,  ( 2  x.  y ) ,  1 )  =  if ( x  <_ 
( 1  /  2
) ,  ( 2  x.  x ) ,  1 ) )
10151, 52, 55, 51, 51, 96, 100cnmpt12 19896 . . 3  |-  ( ( F  e.  ( II 
Cn  J )  /\  ( F `  1 )  =  Y )  -> 
( x  e.  ( 0 [,] 1 ) 
|->  if ( x  <_ 
( 1  /  2
) ,  ( 2  x.  x ) ,  1 ) )  e.  ( II  Cn  II ) )
102 id 22 . . . . . . . 8  |-  ( x  =  0  ->  x  =  0 )
103102, 66syl6eqbr 4477 . . . . . . 7  |-  ( x  =  0  ->  x  <_  ( 1  /  2
) )
104103, 32syl 16 . . . . . 6  |-  ( x  =  0  ->  if ( x  <_  ( 1  /  2 ) ,  ( 2  x.  x
) ,  1 )  =  ( 2  x.  x ) )
105 oveq2 6283 . . . . . . 7  |-  ( x  =  0  ->  (
2  x.  x )  =  ( 2  x.  0 ) )
106 2t0e0 10680 . . . . . . 7  |-  ( 2  x.  0 )  =  0
107105, 106syl6eq 2517 . . . . . 6  |-  ( x  =  0  ->  (
2  x.  x )  =  0 )
108104, 107eqtrd 2501 . . . . 5  |-  ( x  =  0  ->  if ( x  <_  ( 1  /  2 ) ,  ( 2  x.  x
) ,  1 )  =  0 )
109 eqid 2460 . . . . 5  |-  ( x  e.  ( 0 [,] 1 )  |->  if ( x  <_  ( 1  /  2 ) ,  ( 2  x.  x
) ,  1 ) )  =  ( x  e.  ( 0 [,] 1 )  |->  if ( x  <_  ( 1  /  2 ) ,  ( 2  x.  x
) ,  1 ) )
110 c0ex 9579 . . . . 5  |-  0  e.  _V
111108, 109, 110fvmpt 5941 . . . 4  |-  ( 0  e.  ( 0 [,] 1 )  ->  (
( x  e.  ( 0 [,] 1 ) 
|->  if ( x  <_ 
( 1  /  2
) ,  ( 2  x.  x ) ,  1 ) ) ` 
0 )  =  0 )
11253, 111mp1i 12 . . 3  |-  ( ( F  e.  ( II 
Cn  J )  /\  ( F `  1 )  =  Y )  -> 
( ( x  e.  ( 0 [,] 1
)  |->  if ( x  <_  ( 1  / 
2 ) ,  ( 2  x.  x ) ,  1 ) ) `
 0 )  =  0 )
11364, 62ltnlei 9694 . . . . . . . 8  |-  ( ( 1  /  2 )  <  1  <->  -.  1  <_  ( 1  /  2
) )
11467, 113mpbi 208 . . . . . . 7  |-  -.  1  <_  ( 1  /  2
)
115 breq1 4443 . . . . . . 7  |-  ( x  =  1  ->  (
x  <_  ( 1  /  2 )  <->  1  <_  ( 1  /  2 ) ) )
116114, 115mtbiri 303 . . . . . 6  |-  ( x  =  1  ->  -.  x  <_  ( 1  / 
2 ) )
117116, 39syl 16 . . . . 5  |-  ( x  =  1  ->  if ( x  <_  ( 1  /  2 ) ,  ( 2  x.  x
) ,  1 )  =  1 )
118 1ex 9580 . . . . 5  |-  1  e.  _V
119117, 109, 118fvmpt 5941 . . . 4  |-  ( 1  e.  ( 0 [,] 1 )  ->  (
( x  e.  ( 0 [,] 1 ) 
|->  if ( x  <_ 
( 1  /  2
) ,  ( 2  x.  x ) ,  1 ) ) ` 
1 )  =  1 )
1208, 119mp1i 12 . . 3  |-  ( ( F  e.  ( II 
Cn  J )  /\  ( F `  1 )  =  Y )  -> 
( ( x  e.  ( 0 [,] 1
)  |->  if ( x  <_  ( 1  / 
2 ) ,  ( 2  x.  x ) ,  1 ) ) `
 1 )  =  1 )
12123, 101, 112, 120reparpht 21226 . 2  |-  ( ( F  e.  ( II 
Cn  J )  /\  ( F `  1 )  =  Y )  -> 
( F  o.  (
x  e.  ( 0 [,] 1 )  |->  if ( x  <_  (
1  /  2 ) ,  ( 2  x.  x ) ,  1 ) ) ) ( 
~=ph  `  J ) F )
12249, 121eqbrtrd 4460 1  |-  ( ( F  e.  ( II 
Cn  J )  /\  ( F `  1 )  =  Y )  -> 
( F ( *p
`  J ) P ) (  ~=ph  `  J
) F )
Colors of variables: wff setvar class
Syntax hints:   -. wn 3    -> wi 4    /\ wa 369    /\ w3a 968    = wceq 1374    e. wcel 1762    C_ wss 3469   ifcif 3932   {csn 4020   U.cuni 4238   class class class wbr 4440    |-> cmpt 4498    X. cxp 4990   ran crn 4993    o. ccom 4996   -->wf 5575   ` cfv 5579  (class class class)co 6275   RRcr 9480   0cc0 9481   1c1 9482    x. cmul 9486    < clt 9617    <_ cle 9618    - cmin 9794    / cdiv 10195   2c2 10574   (,)cioo 11518   [,]cicc 11521   ↾t crest 14665   topGenctg 14682   Topctop 19154  TopOnctopon 19155    Cn ccn 19484   IIcii 21107    ~=ph cphtpc 21197   *pcpco 21228
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1596  ax-4 1607  ax-5 1675  ax-6 1714  ax-7 1734  ax-8 1764  ax-9 1766  ax-10 1781  ax-11 1786  ax-12 1798  ax-13 1961  ax-ext 2438  ax-rep 4551  ax-sep 4561  ax-nul 4569  ax-pow 4618  ax-pr 4679  ax-un 6567  ax-inf2 8047  ax-cnex 9537  ax-resscn 9538  ax-1cn 9539  ax-icn 9540  ax-addcl 9541  ax-addrcl 9542  ax-mulcl 9543  ax-mulrcl 9544  ax-mulcom 9545  ax-addass 9546  ax-mulass 9547  ax-distr 9548  ax-i2m1 9549  ax-1ne0 9550  ax-1rid 9551  ax-rnegex 9552  ax-rrecex 9553  ax-cnre 9554  ax-pre-lttri 9555  ax-pre-lttrn 9556  ax-pre-ltadd 9557  ax-pre-mulgt0 9558  ax-pre-sup 9559  ax-addf 9560  ax-mulf 9561
This theorem depends on definitions:  df-bi 185  df-or 370  df-an 371  df-3or 969  df-3an 970  df-tru 1377  df-ex 1592  df-nf 1595  df-sb 1707  df-eu 2272  df-mo 2273  df-clab 2446  df-cleq 2452  df-clel 2455  df-nfc 2610  df-ne 2657  df-nel 2658  df-ral 2812  df-rex 2813  df-reu 2814  df-rmo 2815  df-rab 2816  df-v 3108  df-sbc 3325  df-csb 3429  df-dif 3472  df-un 3474  df-in 3476  df-ss 3483  df-pss 3485  df-nul 3779  df-if 3933  df-pw 4005  df-sn 4021  df-pr 4023  df-tp 4025  df-op 4027  df-uni 4239  df-int 4276  df-iun 4320  df-iin 4321  df-br 4441  df-opab 4499  df-mpt 4500  df-tr 4534  df-eprel 4784  df-id 4788  df-po 4793  df-so 4794  df-fr 4831  df-se 4832  df-we 4833  df-ord 4874  df-on 4875  df-lim 4876  df-suc 4877  df-xp 4998  df-rel 4999  df-cnv 5000  df-co 5001  df-dm 5002  df-rn 5003  df-res 5004  df-ima 5005  df-iota 5542  df-fun 5581  df-fn 5582  df-f 5583  df-f1 5584  df-fo 5585  df-f1o 5586  df-fv 5587  df-isom 5588  df-riota 6236  df-ov 6278  df-oprab 6279  df-mpt2 6280  df-of 6515  df-om 6672  df-1st 6774  df-2nd 6775  df-supp 6892  df-recs 7032  df-rdg 7066  df-1o 7120  df-2o 7121  df-oadd 7124  df-er 7301  df-map 7412  df-ixp 7460  df-en 7507  df-dom 7508  df-sdom 7509  df-fin 7510  df-fsupp 7819  df-fi 7860  df-sup 7890  df-oi 7924  df-card 8309  df-cda 8537  df-pnf 9619  df-mnf 9620  df-xr 9621  df-ltxr 9622  df-le 9623  df-sub 9796  df-neg 9797  df-div 10196  df-nn 10526  df-2 10583  df-3 10584  df-4 10585  df-5 10586  df-6 10587  df-7 10588  df-8 10589  df-9 10590  df-10 10591  df-n0 10785  df-z 10854  df-dec 10966  df-uz 11072  df-q 11172  df-rp 11210  df-xneg 11307  df-xadd 11308  df-xmul 11309  df-ioo 11522  df-icc 11525  df-fz 11662  df-fzo 11782  df-seq 12064  df-exp 12123  df-hash 12361  df-cj 12882  df-re 12883  df-im 12884  df-sqr 13018  df-abs 13019  df-struct 14481  df-ndx 14482  df-slot 14483  df-base 14484  df-sets 14485  df-ress 14486  df-plusg 14557  df-mulr 14558  df-starv 14559  df-sca 14560  df-vsca 14561  df-ip 14562  df-tset 14563  df-ple 14564  df-ds 14566  df-unif 14567  df-hom 14568  df-cco 14569  df-rest 14667  df-topn 14668  df-0g 14686  df-gsum 14687  df-topgen 14688  df-pt 14689  df-prds 14692  df-xrs 14746  df-qtop 14751  df-imas 14752  df-xps 14754  df-mre 14830  df-mrc 14831  df-acs 14833  df-mnd 15721  df-submnd 15771  df-mulg 15854  df-cntz 16143  df-cmn 16589  df-psmet 18175  df-xmet 18176  df-met 18177  df-bl 18178  df-mopn 18179  df-cnfld 18185  df-top 19159  df-bases 19161  df-topon 19162  df-topsp 19163  df-cld 19279  df-cn 19487  df-cnp 19488  df-tx 19791  df-hmeo 19984  df-xms 20551  df-ms 20552  df-tms 20553  df-ii 21109  df-htpy 21198  df-phtpy 21199  df-phtpc 21220  df-pco 21233
This theorem is referenced by:  pcophtb  21257  pi1xfrcnvlem  21284
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