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Theorem sconpi1 29962
Description: A path-connected topological space is simply connected iff its fundamental group is trivial. (Contributed by Mario Carneiro, 12-Feb-2015.)
Hypothesis
Ref Expression
sconpi1.1  |-  X  = 
U. J
Assertion
Ref Expression
sconpi1  |-  ( ( J  e. PCon  /\  Y  e.  X )  ->  ( J  e. SCon  <->  ( Base `  ( J  pi1  Y ) )  ~~  1o ) )

Proof of Theorem sconpi1
Dummy variables  f  x are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 scontop 29951 . . . . . . . . 9  |-  ( J  e. SCon  ->  J  e.  Top )
21adantl 468 . . . . . . . 8  |-  ( ( Y  e.  X  /\  J  e. SCon )  ->  J  e.  Top )
3 simpl 459 . . . . . . . 8  |-  ( ( Y  e.  X  /\  J  e. SCon )  ->  Y  e.  X )
4 eqid 2451 . . . . . . . . 9  |-  ( J  pi1  Y )  =  ( J  pi1  Y )
5 eqid 2451 . . . . . . . . 9  |-  ( Base `  ( J  pi1  Y ) )  =  ( Base `  ( J  pi1  Y ) )
6 simpl 459 . . . . . . . . . 10  |-  ( ( J  e.  Top  /\  Y  e.  X )  ->  J  e.  Top )
7 sconpi1.1 . . . . . . . . . . 11  |-  X  = 
U. J
87toptopon 19948 . . . . . . . . . 10  |-  ( J  e.  Top  <->  J  e.  (TopOn `  X ) )
96, 8sylib 200 . . . . . . . . 9  |-  ( ( J  e.  Top  /\  Y  e.  X )  ->  J  e.  (TopOn `  X ) )
10 simpr 463 . . . . . . . . 9  |-  ( ( J  e.  Top  /\  Y  e.  X )  ->  Y  e.  X )
114, 5, 9, 10elpi1 22076 . . . . . . . 8  |-  ( ( J  e.  Top  /\  Y  e.  X )  ->  ( x  e.  (
Base `  ( J  pi1  Y )
)  <->  E. f  e.  ( II  Cn  J ) ( ( ( f `
 0 )  =  Y  /\  ( f `
 1 )  =  Y )  /\  x  =  [ f ] ( 
~=ph  `  J ) ) ) )
122, 3, 11syl2anc 667 . . . . . . 7  |-  ( ( Y  e.  X  /\  J  e. SCon )  ->  ( x  e.  ( Base `  ( J  pi1  Y ) )  <->  E. f  e.  ( II  Cn  J
) ( ( ( f `  0 )  =  Y  /\  (
f `  1 )  =  Y )  /\  x  =  [ f ] ( 
~=ph  `  J ) ) ) )
13 phtpcer 22026 . . . . . . . . . . . . 13  |-  (  ~=ph  `  J )  Er  (
II  Cn  J )
1413a1i 11 . . . . . . . . . . . 12  |-  ( ( ( ( Y  e.  X  /\  J  e. SCon
)  /\  f  e.  ( II  Cn  J
) )  /\  (
( f `  0
)  =  Y  /\  ( f `  1
)  =  Y ) )  ->  (  ~=ph  `  J )  Er  (
II  Cn  J )
)
15 simpllr 769 . . . . . . . . . . . . . 14  |-  ( ( ( ( Y  e.  X  /\  J  e. SCon
)  /\  f  e.  ( II  Cn  J
) )  /\  (
( f `  0
)  =  Y  /\  ( f `  1
)  =  Y ) )  ->  J  e. SCon )
16 simplr 762 . . . . . . . . . . . . . 14  |-  ( ( ( ( Y  e.  X  /\  J  e. SCon
)  /\  f  e.  ( II  Cn  J
) )  /\  (
( f `  0
)  =  Y  /\  ( f `  1
)  =  Y ) )  ->  f  e.  ( II  Cn  J
) )
17 simprl 764 . . . . . . . . . . . . . . 15  |-  ( ( ( ( Y  e.  X  /\  J  e. SCon
)  /\  f  e.  ( II  Cn  J
) )  /\  (
( f `  0
)  =  Y  /\  ( f `  1
)  =  Y ) )  ->  ( f `  0 )  =  Y )
18 simprr 766 . . . . . . . . . . . . . . 15  |-  ( ( ( ( Y  e.  X  /\  J  e. SCon
)  /\  f  e.  ( II  Cn  J
) )  /\  (
( f `  0
)  =  Y  /\  ( f `  1
)  =  Y ) )  ->  ( f `  1 )  =  Y )
1917, 18eqtr4d 2488 . . . . . . . . . . . . . 14  |-  ( ( ( ( Y  e.  X  /\  J  e. SCon
)  /\  f  e.  ( II  Cn  J
) )  /\  (
( f `  0
)  =  Y  /\  ( f `  1
)  =  Y ) )  ->  ( f `  0 )  =  ( f `  1
) )
20 sconpht 29952 . . . . . . . . . . . . . 14  |-  ( ( J  e. SCon  /\  f  e.  ( II  Cn  J
)  /\  ( f `  0 )  =  ( f `  1
) )  ->  f
(  ~=ph  `  J )
( ( 0 [,] 1 )  X.  {
( f `  0
) } ) )
2115, 16, 19, 20syl3anc 1268 . . . . . . . . . . . . 13  |-  ( ( ( ( Y  e.  X  /\  J  e. SCon
)  /\  f  e.  ( II  Cn  J
) )  /\  (
( f `  0
)  =  Y  /\  ( f `  1
)  =  Y ) )  ->  f (  ~=ph  `  J ) ( ( 0 [,] 1 )  X.  { ( f `
 0 ) } ) )
2217sneqd 3980 . . . . . . . . . . . . . 14  |-  ( ( ( ( Y  e.  X  /\  J  e. SCon
)  /\  f  e.  ( II  Cn  J
) )  /\  (
( f `  0
)  =  Y  /\  ( f `  1
)  =  Y ) )  ->  { (
f `  0 ) }  =  { Y } )
2322xpeq2d 4858 . . . . . . . . . . . . 13  |-  ( ( ( ( Y  e.  X  /\  J  e. SCon
)  /\  f  e.  ( II  Cn  J
) )  /\  (
( f `  0
)  =  Y  /\  ( f `  1
)  =  Y ) )  ->  ( (
0 [,] 1 )  X.  { ( f `
 0 ) } )  =  ( ( 0 [,] 1 )  X.  { Y }
) )
2421, 23breqtrd 4427 . . . . . . . . . . . 12  |-  ( ( ( ( Y  e.  X  /\  J  e. SCon
)  /\  f  e.  ( II  Cn  J
) )  /\  (
( f `  0
)  =  Y  /\  ( f `  1
)  =  Y ) )  ->  f (  ~=ph  `  J ) ( ( 0 [,] 1 )  X.  { Y }
) )
2514, 24erthi 7410 . . . . . . . . . . 11  |-  ( ( ( ( Y  e.  X  /\  J  e. SCon
)  /\  f  e.  ( II  Cn  J
) )  /\  (
( f `  0
)  =  Y  /\  ( f `  1
)  =  Y ) )  ->  [ f ] (  ~=ph  `  J
)  =  [ ( ( 0 [,] 1
)  X.  { Y } ) ] ( 
~=ph  `  J ) )
262, 8sylib 200 . . . . . . . . . . . . 13  |-  ( ( Y  e.  X  /\  J  e. SCon )  ->  J  e.  (TopOn `  X
) )
27 eqid 2451 . . . . . . . . . . . . . 14  |-  ( ( 0 [,] 1 )  X.  { Y }
)  =  ( ( 0 [,] 1 )  X.  { Y }
)
284, 27pi1id 22082 . . . . . . . . . . . . 13  |-  ( ( J  e.  (TopOn `  X )  /\  Y  e.  X )  ->  [ ( ( 0 [,] 1
)  X.  { Y } ) ] ( 
~=ph  `  J )  =  ( 0g `  ( J  pi1  Y ) ) )
2926, 3, 28syl2anc 667 . . . . . . . . . . . 12  |-  ( ( Y  e.  X  /\  J  e. SCon )  ->  [ ( ( 0 [,] 1 )  X.  { Y } ) ] ( 
~=ph  `  J )  =  ( 0g `  ( J  pi1  Y ) ) )
3029ad2antrr 732 . . . . . . . . . . 11  |-  ( ( ( ( Y  e.  X  /\  J  e. SCon
)  /\  f  e.  ( II  Cn  J
) )  /\  (
( f `  0
)  =  Y  /\  ( f `  1
)  =  Y ) )  ->  [ (
( 0 [,] 1
)  X.  { Y } ) ] ( 
~=ph  `  J )  =  ( 0g `  ( J  pi1  Y ) ) )
3125, 30eqtrd 2485 . . . . . . . . . 10  |-  ( ( ( ( Y  e.  X  /\  J  e. SCon
)  /\  f  e.  ( II  Cn  J
) )  /\  (
( f `  0
)  =  Y  /\  ( f `  1
)  =  Y ) )  ->  [ f ] (  ~=ph  `  J
)  =  ( 0g
`  ( J  pi1  Y ) ) )
32 elsn 3982 . . . . . . . . . . 11  |-  ( x  e.  { ( 0g
`  ( J  pi1  Y ) ) }  <->  x  =  ( 0g `  ( J  pi1  Y ) ) )
33 eqeq1 2455 . . . . . . . . . . 11  |-  ( x  =  [ f ] (  ~=ph  `  J )  ->  ( x  =  ( 0g `  ( J  pi1  Y ) )  <->  [ f ] ( 
~=ph  `  J )  =  ( 0g `  ( J  pi1  Y ) ) ) )
3432, 33syl5bb 261 . . . . . . . . . 10  |-  ( x  =  [ f ] (  ~=ph  `  J )  ->  ( x  e. 
{ ( 0g `  ( J  pi1  Y ) ) }  <->  [ f ] ( 
~=ph  `  J )  =  ( 0g `  ( J  pi1  Y ) ) ) )
3531, 34syl5ibrcom 226 . . . . . . . . 9  |-  ( ( ( ( Y  e.  X  /\  J  e. SCon
)  /\  f  e.  ( II  Cn  J
) )  /\  (
( f `  0
)  =  Y  /\  ( f `  1
)  =  Y ) )  ->  ( x  =  [ f ] ( 
~=ph  `  J )  ->  x  e.  { ( 0g `  ( J  pi1  Y ) ) } ) )
3635expimpd 608 . . . . . . . 8  |-  ( ( ( Y  e.  X  /\  J  e. SCon )  /\  f  e.  ( II  Cn  J ) )  -> 
( ( ( ( f `  0 )  =  Y  /\  (
f `  1 )  =  Y )  /\  x  =  [ f ] ( 
~=ph  `  J ) )  ->  x  e.  {
( 0g `  ( J  pi1  Y ) ) } ) )
3736rexlimdva 2879 . . . . . . 7  |-  ( ( Y  e.  X  /\  J  e. SCon )  ->  ( E. f  e.  ( II  Cn  J ) ( ( ( f `
 0 )  =  Y  /\  ( f `
 1 )  =  Y )  /\  x  =  [ f ] ( 
~=ph  `  J ) )  ->  x  e.  {
( 0g `  ( J  pi1  Y ) ) } ) )
3812, 37sylbid 219 . . . . . 6  |-  ( ( Y  e.  X  /\  J  e. SCon )  ->  ( x  e.  ( Base `  ( J  pi1  Y ) )  ->  x  e.  { ( 0g `  ( J  pi1  Y ) ) } ) )
3938ssrdv 3438 . . . . 5  |-  ( ( Y  e.  X  /\  J  e. SCon )  ->  (
Base `  ( J  pi1  Y )
)  C_  { ( 0g `  ( J  pi1  Y ) ) } )
404pi1grp 22081 . . . . . . . 8  |-  ( ( J  e.  (TopOn `  X )  /\  Y  e.  X )  ->  ( J  pi1  Y )  e.  Grp )
4126, 3, 40syl2anc 667 . . . . . . 7  |-  ( ( Y  e.  X  /\  J  e. SCon )  ->  ( J  pi1  Y )  e.  Grp )
42 eqid 2451 . . . . . . . 8  |-  ( 0g
`  ( J  pi1  Y ) )  =  ( 0g `  ( J  pi1  Y ) )
435, 42grpidcl 16694 . . . . . . 7  |-  ( ( J  pi1  Y )  e.  Grp  ->  ( 0g `  ( J  pi1  Y ) )  e.  ( Base `  ( J  pi1  Y ) ) )
4441, 43syl 17 . . . . . 6  |-  ( ( Y  e.  X  /\  J  e. SCon )  ->  ( 0g `  ( J  pi1  Y ) )  e.  ( Base `  ( J  pi1  Y ) ) )
4544snssd 4117 . . . . 5  |-  ( ( Y  e.  X  /\  J  e. SCon )  ->  { ( 0g `  ( J  pi1  Y ) ) }  C_  ( Base `  ( J  pi1  Y ) ) )
4639, 45eqssd 3449 . . . 4  |-  ( ( Y  e.  X  /\  J  e. SCon )  ->  (
Base `  ( J  pi1  Y )
)  =  { ( 0g `  ( J  pi1  Y ) ) } )
47 fvex 5875 . . . . 5  |-  ( 0g
`  ( J  pi1  Y ) )  e.  _V
4847ensn1 7633 . . . 4  |-  { ( 0g `  ( J  pi1  Y ) ) }  ~~  1o
4946, 48syl6eqbr 4440 . . 3  |-  ( ( Y  e.  X  /\  J  e. SCon )  ->  (
Base `  ( J  pi1  Y )
)  ~~  1o )
5049adantll 720 . 2  |-  ( ( ( J  e. PCon  /\  Y  e.  X )  /\  J  e. SCon )  -> 
( Base `  ( J  pi1  Y )
)  ~~  1o )
51 simpll 760 . . 3  |-  ( ( ( J  e. PCon  /\  Y  e.  X )  /\  ( Base `  ( J  pi1  Y ) )  ~~  1o )  ->  J  e. PCon )
52 eqid 2451 . . . . . . . . 9  |-  ( J  pi1  ( f `
 0 ) )  =  ( J  pi1  ( f ` 
0 ) )
53 eqid 2451 . . . . . . . . 9  |-  ( Base `  ( J  pi1 
( f `  0
) ) )  =  ( Base `  ( J  pi1  ( f `
 0 ) ) )
54 simplll 768 . . . . . . . . . . 11  |-  ( ( ( ( J  e. PCon  /\  Y  e.  X
)  /\  ( Base `  ( J  pi1  Y ) )  ~~  1o )  /\  (
f  e.  ( II 
Cn  J )  /\  ( f `  0
)  =  ( f `
 1 ) ) )  ->  J  e. PCon )
55 pcontop 29948 . . . . . . . . . . 11  |-  ( J  e. PCon  ->  J  e.  Top )
5654, 55syl 17 . . . . . . . . . 10  |-  ( ( ( ( J  e. PCon  /\  Y  e.  X
)  /\  ( Base `  ( J  pi1  Y ) )  ~~  1o )  /\  (
f  e.  ( II 
Cn  J )  /\  ( f `  0
)  =  ( f `
 1 ) ) )  ->  J  e.  Top )
5756, 8sylib 200 . . . . . . . . 9  |-  ( ( ( ( J  e. PCon  /\  Y  e.  X
)  /\  ( Base `  ( J  pi1  Y ) )  ~~  1o )  /\  (
f  e.  ( II 
Cn  J )  /\  ( f `  0
)  =  ( f `
 1 ) ) )  ->  J  e.  (TopOn `  X ) )
58 simprl 764 . . . . . . . . . . 11  |-  ( ( ( ( J  e. PCon  /\  Y  e.  X
)  /\  ( Base `  ( J  pi1  Y ) )  ~~  1o )  /\  (
f  e.  ( II 
Cn  J )  /\  ( f `  0
)  =  ( f `
 1 ) ) )  ->  f  e.  ( II  Cn  J
) )
59 iiuni 21913 . . . . . . . . . . . 12  |-  ( 0 [,] 1 )  = 
U. II
6059, 7cnf 20262 . . . . . . . . . . 11  |-  ( f  e.  ( II  Cn  J )  ->  f : ( 0 [,] 1 ) --> X )
6158, 60syl 17 . . . . . . . . . 10  |-  ( ( ( ( J  e. PCon  /\  Y  e.  X
)  /\  ( Base `  ( J  pi1  Y ) )  ~~  1o )  /\  (
f  e.  ( II 
Cn  J )  /\  ( f `  0
)  =  ( f `
 1 ) ) )  ->  f :
( 0 [,] 1
) --> X )
62 0elunit 11750 . . . . . . . . . 10  |-  0  e.  ( 0 [,] 1
)
63 ffvelrn 6020 . . . . . . . . . 10  |-  ( ( f : ( 0 [,] 1 ) --> X  /\  0  e.  ( 0 [,] 1 ) )  ->  ( f `  0 )  e.  X )
6461, 62, 63sylancl 668 . . . . . . . . 9  |-  ( ( ( ( J  e. PCon  /\  Y  e.  X
)  /\  ( Base `  ( J  pi1  Y ) )  ~~  1o )  /\  (
f  e.  ( II 
Cn  J )  /\  ( f `  0
)  =  ( f `
 1 ) ) )  ->  ( f `  0 )  e.  X )
65 eqidd 2452 . . . . . . . . 9  |-  ( ( ( ( J  e. PCon  /\  Y  e.  X
)  /\  ( Base `  ( J  pi1  Y ) )  ~~  1o )  /\  (
f  e.  ( II 
Cn  J )  /\  ( f `  0
)  =  ( f `
 1 ) ) )  ->  ( f `  0 )  =  ( f `  0
) )
66 simprr 766 . . . . . . . . . 10  |-  ( ( ( ( J  e. PCon  /\  Y  e.  X
)  /\  ( Base `  ( J  pi1  Y ) )  ~~  1o )  /\  (
f  e.  ( II 
Cn  J )  /\  ( f `  0
)  =  ( f `
 1 ) ) )  ->  ( f `  0 )  =  ( f `  1
) )
6766eqcomd 2457 . . . . . . . . 9  |-  ( ( ( ( J  e. PCon  /\  Y  e.  X
)  /\  ( Base `  ( J  pi1  Y ) )  ~~  1o )  /\  (
f  e.  ( II 
Cn  J )  /\  ( f `  0
)  =  ( f `
 1 ) ) )  ->  ( f `  1 )  =  ( f `  0
) )
6852, 53, 57, 64, 58, 65, 67elpi1i 22077 . . . . . . . 8  |-  ( ( ( ( J  e. PCon  /\  Y  e.  X
)  /\  ( Base `  ( J  pi1  Y ) )  ~~  1o )  /\  (
f  e.  ( II 
Cn  J )  /\  ( f `  0
)  =  ( f `
 1 ) ) )  ->  [ f ] (  ~=ph  `  J
)  e.  ( Base `  ( J  pi1 
( f `  0
) ) ) )
69 eqid 2451 . . . . . . . . . . . . 13  |-  ( ( 0 [,] 1 )  X.  { ( f `
 0 ) } )  =  ( ( 0 [,] 1 )  X.  { ( f `
 0 ) } )
7069pcoptcl 22052 . . . . . . . . . . . 12  |-  ( ( J  e.  (TopOn `  X )  /\  (
f `  0 )  e.  X )  ->  (
( ( 0 [,] 1 )  X.  {
( f `  0
) } )  e.  ( II  Cn  J
)  /\  ( (
( 0 [,] 1
)  X.  { ( f `  0 ) } ) `  0
)  =  ( f `
 0 )  /\  ( ( ( 0 [,] 1 )  X. 
{ ( f ` 
0 ) } ) `
 1 )  =  ( f `  0
) ) )
7157, 64, 70syl2anc 667 . . . . . . . . . . 11  |-  ( ( ( ( J  e. PCon  /\  Y  e.  X
)  /\  ( Base `  ( J  pi1  Y ) )  ~~  1o )  /\  (
f  e.  ( II 
Cn  J )  /\  ( f `  0
)  =  ( f `
 1 ) ) )  ->  ( (
( 0 [,] 1
)  X.  { ( f `  0 ) } )  e.  ( II  Cn  J )  /\  ( ( ( 0 [,] 1 )  X.  { ( f `
 0 ) } ) `  0 )  =  ( f ` 
0 )  /\  (
( ( 0 [,] 1 )  X.  {
( f `  0
) } ) ` 
1 )  =  ( f `  0 ) ) )
7271simp1d 1020 . . . . . . . . . 10  |-  ( ( ( ( J  e. PCon  /\  Y  e.  X
)  /\  ( Base `  ( J  pi1  Y ) )  ~~  1o )  /\  (
f  e.  ( II 
Cn  J )  /\  ( f `  0
)  =  ( f `
 1 ) ) )  ->  ( (
0 [,] 1 )  X.  { ( f `
 0 ) } )  e.  ( II 
Cn  J ) )
7371simp2d 1021 . . . . . . . . . 10  |-  ( ( ( ( J  e. PCon  /\  Y  e.  X
)  /\  ( Base `  ( J  pi1  Y ) )  ~~  1o )  /\  (
f  e.  ( II 
Cn  J )  /\  ( f `  0
)  =  ( f `
 1 ) ) )  ->  ( (
( 0 [,] 1
)  X.  { ( f `  0 ) } ) `  0
)  =  ( f `
 0 ) )
7471simp3d 1022 . . . . . . . . . 10  |-  ( ( ( ( J  e. PCon  /\  Y  e.  X
)  /\  ( Base `  ( J  pi1  Y ) )  ~~  1o )  /\  (
f  e.  ( II 
Cn  J )  /\  ( f `  0
)  =  ( f `
 1 ) ) )  ->  ( (
( 0 [,] 1
)  X.  { ( f `  0 ) } ) `  1
)  =  ( f `
 0 ) )
7552, 53, 57, 64, 72, 73, 74elpi1i 22077 . . . . . . . . 9  |-  ( ( ( ( J  e. PCon  /\  Y  e.  X
)  /\  ( Base `  ( J  pi1  Y ) )  ~~  1o )  /\  (
f  e.  ( II 
Cn  J )  /\  ( f `  0
)  =  ( f `
 1 ) ) )  ->  [ (
( 0 [,] 1
)  X.  { ( f `  0 ) } ) ] ( 
~=ph  `  J )  e.  ( Base `  ( J  pi1  ( f `
 0 ) ) ) )
76 simpllr 769 . . . . . . . . . . . 12  |-  ( ( ( ( J  e. PCon  /\  Y  e.  X
)  /\  ( Base `  ( J  pi1  Y ) )  ~~  1o )  /\  (
f  e.  ( II 
Cn  J )  /\  ( f `  0
)  =  ( f `
 1 ) ) )  ->  Y  e.  X )
777, 52, 4, 53, 5pconpi1 29960 . . . . . . . . . . . 12  |-  ( ( J  e. PCon  /\  (
f `  0 )  e.  X  /\  Y  e.  X )  ->  ( J  pi1  ( f `
 0 ) ) 
~=g𝑔 
( J  pi1  Y ) )
7854, 64, 76, 77syl3anc 1268 . . . . . . . . . . 11  |-  ( ( ( ( J  e. PCon  /\  Y  e.  X
)  /\  ( Base `  ( J  pi1  Y ) )  ~~  1o )  /\  (
f  e.  ( II 
Cn  J )  /\  ( f `  0
)  =  ( f `
 1 ) ) )  ->  ( J  pi1  ( f `  0 ) ) 
~=g𝑔 
( J  pi1  Y ) )
7953, 5gicen 16941 . . . . . . . . . . 11  |-  ( ( J  pi1  ( f `  0 ) )  ~=g𝑔  ( J  pi1  Y )  ->  ( Base `  ( J  pi1  ( f ` 
0 ) ) ) 
~~  ( Base `  ( J  pi1  Y ) ) )
8078, 79syl 17 . . . . . . . . . 10  |-  ( ( ( ( J  e. PCon  /\  Y  e.  X
)  /\  ( Base `  ( J  pi1  Y ) )  ~~  1o )  /\  (
f  e.  ( II 
Cn  J )  /\  ( f `  0
)  =  ( f `
 1 ) ) )  ->  ( Base `  ( J  pi1 
( f `  0
) ) )  ~~  ( Base `  ( J  pi1  Y )
) )
81 simplr 762 . . . . . . . . . 10  |-  ( ( ( ( J  e. PCon  /\  Y  e.  X
)  /\  ( Base `  ( J  pi1  Y ) )  ~~  1o )  /\  (
f  e.  ( II 
Cn  J )  /\  ( f `  0
)  =  ( f `
 1 ) ) )  ->  ( Base `  ( J  pi1  Y ) )  ~~  1o )
82 entr 7621 . . . . . . . . . 10  |-  ( ( ( Base `  ( J  pi1  ( f `
 0 ) ) )  ~~  ( Base `  ( J  pi1  Y ) )  /\  ( Base `  ( J  pi1  Y )
)  ~~  1o )  ->  ( Base `  ( J  pi1  ( f `
 0 ) ) )  ~~  1o )
8380, 81, 82syl2anc 667 . . . . . . . . 9  |-  ( ( ( ( J  e. PCon  /\  Y  e.  X
)  /\  ( Base `  ( J  pi1  Y ) )  ~~  1o )  /\  (
f  e.  ( II 
Cn  J )  /\  ( f `  0
)  =  ( f `
 1 ) ) )  ->  ( Base `  ( J  pi1 
( f `  0
) ) )  ~~  1o )
84 en1eqsn 7801 . . . . . . . . 9  |-  ( ( [ ( ( 0 [,] 1 )  X. 
{ ( f ` 
0 ) } ) ] (  ~=ph  `  J
)  e.  ( Base `  ( J  pi1 
( f `  0
) ) )  /\  ( Base `  ( J  pi1  ( f `  0 ) ) )  ~~  1o )  ->  ( Base `  ( J  pi1  ( f `
 0 ) ) )  =  { [
( ( 0 [,] 1 )  X.  {
( f `  0
) } ) ] (  ~=ph  `  J ) } )
8575, 83, 84syl2anc 667 . . . . . . . 8  |-  ( ( ( ( J  e. PCon  /\  Y  e.  X
)  /\  ( Base `  ( J  pi1  Y ) )  ~~  1o )  /\  (
f  e.  ( II 
Cn  J )  /\  ( f `  0
)  =  ( f `
 1 ) ) )  ->  ( Base `  ( J  pi1 
( f `  0
) ) )  =  { [ ( ( 0 [,] 1 )  X.  { ( f `
 0 ) } ) ] (  ~=ph  `  J ) } )
8668, 85eleqtrd 2531 . . . . . . 7  |-  ( ( ( ( J  e. PCon  /\  Y  e.  X
)  /\  ( Base `  ( J  pi1  Y ) )  ~~  1o )  /\  (
f  e.  ( II 
Cn  J )  /\  ( f `  0
)  =  ( f `
 1 ) ) )  ->  [ f ] (  ~=ph  `  J
)  e.  { [
( ( 0 [,] 1 )  X.  {
( f `  0
) } ) ] (  ~=ph  `  J ) } )
87 elsni 3993 . . . . . . 7  |-  ( [ f ] (  ~=ph  `  J )  e.  { [ ( ( 0 [,] 1 )  X. 
{ ( f ` 
0 ) } ) ] (  ~=ph  `  J
) }  ->  [ f ] (  ~=ph  `  J
)  =  [ ( ( 0 [,] 1
)  X.  { ( f `  0 ) } ) ] ( 
~=ph  `  J ) )
8886, 87syl 17 . . . . . 6  |-  ( ( ( ( J  e. PCon  /\  Y  e.  X
)  /\  ( Base `  ( J  pi1  Y ) )  ~~  1o )  /\  (
f  e.  ( II 
Cn  J )  /\  ( f `  0
)  =  ( f `
 1 ) ) )  ->  [ f ] (  ~=ph  `  J
)  =  [ ( ( 0 [,] 1
)  X.  { ( f `  0 ) } ) ] ( 
~=ph  `  J ) )
8913a1i 11 . . . . . . 7  |-  ( ( ( ( J  e. PCon  /\  Y  e.  X
)  /\  ( Base `  ( J  pi1  Y ) )  ~~  1o )  /\  (
f  e.  ( II 
Cn  J )  /\  ( f `  0
)  =  ( f `
 1 ) ) )  ->  (  ~=ph  `  J )  Er  (
II  Cn  J )
)
9089, 58erth 7408 . . . . . 6  |-  ( ( ( ( J  e. PCon  /\  Y  e.  X
)  /\  ( Base `  ( J  pi1  Y ) )  ~~  1o )  /\  (
f  e.  ( II 
Cn  J )  /\  ( f `  0
)  =  ( f `
 1 ) ) )  ->  ( f
(  ~=ph  `  J )
( ( 0 [,] 1 )  X.  {
( f `  0
) } )  <->  [ f ] (  ~=ph  `  J
)  =  [ ( ( 0 [,] 1
)  X.  { ( f `  0 ) } ) ] ( 
~=ph  `  J ) ) )
9188, 90mpbird 236 . . . . 5  |-  ( ( ( ( J  e. PCon  /\  Y  e.  X
)  /\  ( Base `  ( J  pi1  Y ) )  ~~  1o )  /\  (
f  e.  ( II 
Cn  J )  /\  ( f `  0
)  =  ( f `
 1 ) ) )  ->  f (  ~=ph  `  J ) ( ( 0 [,] 1 )  X.  { ( f `
 0 ) } ) )
9291expr 620 . . . 4  |-  ( ( ( ( J  e. PCon  /\  Y  e.  X
)  /\  ( Base `  ( J  pi1  Y ) )  ~~  1o )  /\  f  e.  ( II  Cn  J
) )  ->  (
( f `  0
)  =  ( f `
 1 )  -> 
f (  ~=ph  `  J
) ( ( 0 [,] 1 )  X. 
{ ( f ` 
0 ) } ) ) )
9392ralrimiva 2802 . . 3  |-  ( ( ( J  e. PCon  /\  Y  e.  X )  /\  ( Base `  ( J  pi1  Y ) )  ~~  1o )  ->  A. f  e.  ( II  Cn  J ) ( ( f ` 
0 )  =  ( f `  1 )  ->  f (  ~=ph  `  J ) ( ( 0 [,] 1 )  X.  { ( f `
 0 ) } ) ) )
94 isscon 29949 . . 3  |-  ( J  e. SCon 
<->  ( J  e. PCon  /\  A. f  e.  ( II 
Cn  J ) ( ( f `  0
)  =  ( f `
 1 )  -> 
f (  ~=ph  `  J
) ( ( 0 [,] 1 )  X. 
{ ( f ` 
0 ) } ) ) ) )
9551, 93, 94sylanbrc 670 . 2  |-  ( ( ( J  e. PCon  /\  Y  e.  X )  /\  ( Base `  ( J  pi1  Y ) )  ~~  1o )  ->  J  e. SCon )
9650, 95impbida 843 1  |-  ( ( J  e. PCon  /\  Y  e.  X )  ->  ( J  e. SCon  <->  ( Base `  ( J  pi1  Y ) )  ~~  1o ) )
Colors of variables: wff setvar class
Syntax hints:    -> wi 4    <-> wb 188    /\ wa 371    /\ w3a 985    = wceq 1444    e. wcel 1887   A.wral 2737   E.wrex 2738   {csn 3968   U.cuni 4198   class class class wbr 4402    X. cxp 4832   -->wf 5578   ` cfv 5582  (class class class)co 6290   1oc1o 7175    Er wer 7360   [cec 7361    ~~ cen 7566   0cc0 9539   1c1 9540   [,]cicc 11638   Basecbs 15121   0gc0g 15338   Grpcgrp 16669    ~=g𝑔 cgic 16922   Topctop 19917  TopOnctopon 19918    Cn ccn 20240   IIcii 21907    ~=ph cphtpc 22000    pi1 cpi1 22034  PConcpcon 29942  SConcscon 29943
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1669  ax-4 1682  ax-5 1758  ax-6 1805  ax-7 1851  ax-8 1889  ax-9 1896  ax-10 1915  ax-11 1920  ax-12 1933  ax-13 2091  ax-ext 2431  ax-rep 4515  ax-sep 4525  ax-nul 4534  ax-pow 4581  ax-pr 4639  ax-un 6583  ax-inf2 8146  ax-cnex 9595  ax-resscn 9596  ax-1cn 9597  ax-icn 9598  ax-addcl 9599  ax-addrcl 9600  ax-mulcl 9601  ax-mulrcl 9602  ax-mulcom 9603  ax-addass 9604  ax-mulass 9605  ax-distr 9606  ax-i2m1 9607  ax-1ne0 9608  ax-1rid 9609  ax-rnegex 9610  ax-rrecex 9611  ax-cnre 9612  ax-pre-lttri 9613  ax-pre-lttrn 9614  ax-pre-ltadd 9615  ax-pre-mulgt0 9616  ax-pre-sup 9617  ax-addf 9618  ax-mulf 9619
This theorem depends on definitions:  df-bi 189  df-or 372  df-an 373  df-3or 986  df-3an 987  df-tru 1447  df-ex 1664  df-nf 1668  df-sb 1798  df-eu 2303  df-mo 2304  df-clab 2438  df-cleq 2444  df-clel 2447  df-nfc 2581  df-ne 2624  df-nel 2625  df-ral 2742  df-rex 2743  df-reu 2744  df-rmo 2745  df-rab 2746  df-v 3047  df-sbc 3268  df-csb 3364  df-dif 3407  df-un 3409  df-in 3411  df-ss 3418  df-pss 3420  df-nul 3732  df-if 3882  df-pw 3953  df-sn 3969  df-pr 3971  df-tp 3973  df-op 3975  df-uni 4199  df-int 4235  df-iun 4280  df-iin 4281  df-br 4403  df-opab 4462  df-mpt 4463  df-tr 4498  df-eprel 4745  df-id 4749  df-po 4755  df-so 4756  df-fr 4793  df-se 4794  df-we 4795  df-xp 4840  df-rel 4841  df-cnv 4842  df-co 4843  df-dm 4844  df-rn 4845  df-res 4846  df-ima 4847  df-pred 5380  df-ord 5426  df-on 5427  df-lim 5428  df-suc 5429  df-iota 5546  df-fun 5584  df-fn 5585  df-f 5586  df-f1 5587  df-fo 5588  df-f1o 5589  df-fv 5590  df-isom 5591  df-riota 6252  df-ov 6293  df-oprab 6294  df-mpt2 6295  df-of 6531  df-om 6693  df-1st 6793  df-2nd 6794  df-supp 6915  df-wrecs 7028  df-recs 7090  df-rdg 7128  df-1o 7182  df-2o 7183  df-oadd 7186  df-er 7363  df-ec 7365  df-qs 7369  df-map 7474  df-ixp 7523  df-en 7570  df-dom 7571  df-sdom 7572  df-fin 7573  df-fsupp 7884  df-fi 7925  df-sup 7956  df-inf 7957  df-oi 8025  df-card 8373  df-cda 8598  df-pnf 9677  df-mnf 9678  df-xr 9679  df-ltxr 9680  df-le 9681  df-sub 9862  df-neg 9863  df-div 10270  df-nn 10610  df-2 10668  df-3 10669  df-4 10670  df-5 10671  df-6 10672  df-7 10673  df-8 10674  df-9 10675  df-10 10676  df-n0 10870  df-z 10938  df-dec 11052  df-uz 11160  df-q 11265  df-rp 11303  df-xneg 11409  df-xadd 11410  df-xmul 11411  df-ioo 11639  df-icc 11642  df-fz 11785  df-fzo 11916  df-seq 12214  df-exp 12273  df-hash 12516  df-cj 13162  df-re 13163  df-im 13164  df-sqrt 13298  df-abs 13299  df-struct 15123  df-ndx 15124  df-slot 15125  df-base 15126  df-sets 15127  df-ress 15128  df-plusg 15203  df-mulr 15204  df-starv 15205  df-sca 15206  df-vsca 15207  df-ip 15208  df-tset 15209  df-ple 15210  df-ds 15212  df-unif 15213  df-hom 15214  df-cco 15215  df-rest 15321  df-topn 15322  df-0g 15340  df-gsum 15341  df-topgen 15342  df-pt 15343  df-prds 15346  df-xrs 15400  df-qtop 15406  df-imas 15407  df-qus 15409  df-xps 15410  df-mre 15492  df-mrc 15493  df-acs 15495  df-mgm 16488  df-sgrp 16527  df-mnd 16537  df-submnd 16583  df-grp 16673  df-mulg 16676  df-ghm 16881  df-gim 16923  df-gic 16924  df-cntz 16971  df-cmn 17432  df-psmet 18962  df-xmet 18963  df-met 18964  df-bl 18965  df-mopn 18966  df-cnfld 18971  df-top 19921  df-bases 19922  df-topon 19923  df-topsp 19924  df-cld 20034  df-cn 20243  df-cnp 20244  df-tx 20577  df-hmeo 20770  df-xms 21335  df-ms 21336  df-tms 21337  df-ii 21909  df-htpy 22001  df-phtpy 22002  df-phtpc 22023  df-pco 22036  df-om1 22037  df-pi1 22039  df-pcon 29944  df-scon 29945
This theorem is referenced by: (None)
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