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Theorem axcontlem1 25895
Description: Lemma for axcont 25907. Change bound variables for later use. (Contributed by Scott Fenton, 20-Jun-2013.)
Hypothesis
Ref Expression
axcontlem1.1  |-  F  =  { <. x ,  t
>.  |  ( x  e.  D  /\  (
t  e.  ( 0 [,)  +oo )  /\  A. i  e.  ( 1 ... N ) ( x `  i )  =  ( ( ( 1  -  t )  x.  ( Z `  i ) )  +  ( t  x.  ( U `  i )
) ) ) ) }
Assertion
Ref Expression
axcontlem1  |-  F  =  { <. y ,  s
>.  |  ( y  e.  D  /\  (
s  e.  ( 0 [,)  +oo )  /\  A. j  e.  ( 1 ... N ) ( y `  j )  =  ( ( ( 1  -  s )  x.  ( Z `  j ) )  +  ( s  x.  ( U `  j )
) ) ) ) }
Distinct variable groups:    D, s,
t, x, y    i,
j, s, t, x, y, N    U, i,
j, s, t, x, y    i, Z, j, s, t, x, y
Allowed substitution hints:    D( i, j)    F( x, y, t, i, j, s)

Proof of Theorem axcontlem1
StepHypRef Expression
1 axcontlem1.1 . 2  |-  F  =  { <. x ,  t
>.  |  ( x  e.  D  /\  (
t  e.  ( 0 [,)  +oo )  /\  A. i  e.  ( 1 ... N ) ( x `  i )  =  ( ( ( 1  -  t )  x.  ( Z `  i ) )  +  ( t  x.  ( U `  i )
) ) ) ) }
2 eleq1 2495 . . . . 5  |-  ( x  =  y  ->  (
x  e.  D  <->  y  e.  D ) )
32adantr 452 . . . 4  |-  ( ( x  =  y  /\  t  =  s )  ->  ( x  e.  D  <->  y  e.  D ) )
4 eleq1 2495 . . . . . 6  |-  ( t  =  s  ->  (
t  e.  ( 0 [,)  +oo )  <->  s  e.  ( 0 [,)  +oo ) ) )
54adantl 453 . . . . 5  |-  ( ( x  =  y  /\  t  =  s )  ->  ( t  e.  ( 0 [,)  +oo )  <->  s  e.  ( 0 [,) 
+oo ) ) )
6 fveq1 5719 . . . . . . . 8  |-  ( x  =  y  ->  (
x `  i )  =  ( y `  i ) )
7 oveq2 6081 . . . . . . . . . 10  |-  ( t  =  s  ->  (
1  -  t )  =  ( 1  -  s ) )
87oveq1d 6088 . . . . . . . . 9  |-  ( t  =  s  ->  (
( 1  -  t
)  x.  ( Z `
 i ) )  =  ( ( 1  -  s )  x.  ( Z `  i
) ) )
9 oveq1 6080 . . . . . . . . 9  |-  ( t  =  s  ->  (
t  x.  ( U `
 i ) )  =  ( s  x.  ( U `  i
) ) )
108, 9oveq12d 6091 . . . . . . . 8  |-  ( t  =  s  ->  (
( ( 1  -  t )  x.  ( Z `  i )
)  +  ( t  x.  ( U `  i ) ) )  =  ( ( ( 1  -  s )  x.  ( Z `  i ) )  +  ( s  x.  ( U `  i )
) ) )
116, 10eqeqan12d 2450 . . . . . . 7  |-  ( ( x  =  y  /\  t  =  s )  ->  ( ( x `  i )  =  ( ( ( 1  -  t )  x.  ( Z `  i )
)  +  ( t  x.  ( U `  i ) ) )  <-> 
( y `  i
)  =  ( ( ( 1  -  s
)  x.  ( Z `
 i ) )  +  ( s  x.  ( U `  i
) ) ) ) )
1211ralbidv 2717 . . . . . 6  |-  ( ( x  =  y  /\  t  =  s )  ->  ( A. i  e.  ( 1 ... N
) ( x `  i )  =  ( ( ( 1  -  t )  x.  ( Z `  i )
)  +  ( t  x.  ( U `  i ) ) )  <->  A. i  e.  (
1 ... N ) ( y `  i )  =  ( ( ( 1  -  s )  x.  ( Z `  i ) )  +  ( s  x.  ( U `  i )
) ) ) )
13 fveq2 5720 . . . . . . . 8  |-  ( i  =  j  ->  (
y `  i )  =  ( y `  j ) )
14 fveq2 5720 . . . . . . . . . 10  |-  ( i  =  j  ->  ( Z `  i )  =  ( Z `  j ) )
1514oveq2d 6089 . . . . . . . . 9  |-  ( i  =  j  ->  (
( 1  -  s
)  x.  ( Z `
 i ) )  =  ( ( 1  -  s )  x.  ( Z `  j
) ) )
16 fveq2 5720 . . . . . . . . . 10  |-  ( i  =  j  ->  ( U `  i )  =  ( U `  j ) )
1716oveq2d 6089 . . . . . . . . 9  |-  ( i  =  j  ->  (
s  x.  ( U `
 i ) )  =  ( s  x.  ( U `  j
) ) )
1815, 17oveq12d 6091 . . . . . . . 8  |-  ( i  =  j  ->  (
( ( 1  -  s )  x.  ( Z `  i )
)  +  ( s  x.  ( U `  i ) ) )  =  ( ( ( 1  -  s )  x.  ( Z `  j ) )  +  ( s  x.  ( U `  j )
) ) )
1913, 18eqeq12d 2449 . . . . . . 7  |-  ( i  =  j  ->  (
( y `  i
)  =  ( ( ( 1  -  s
)  x.  ( Z `
 i ) )  +  ( s  x.  ( U `  i
) ) )  <->  ( y `  j )  =  ( ( ( 1  -  s )  x.  ( Z `  j )
)  +  ( s  x.  ( U `  j ) ) ) ) )
2019cbvralv 2924 . . . . . 6  |-  ( A. i  e.  ( 1 ... N ) ( y `  i )  =  ( ( ( 1  -  s )  x.  ( Z `  i ) )  +  ( s  x.  ( U `  i )
) )  <->  A. j  e.  ( 1 ... N
) ( y `  j )  =  ( ( ( 1  -  s )  x.  ( Z `  j )
)  +  ( s  x.  ( U `  j ) ) ) )
2112, 20syl6bb 253 . . . . 5  |-  ( ( x  =  y  /\  t  =  s )  ->  ( A. i  e.  ( 1 ... N
) ( x `  i )  =  ( ( ( 1  -  t )  x.  ( Z `  i )
)  +  ( t  x.  ( U `  i ) ) )  <->  A. j  e.  (
1 ... N ) ( y `  j )  =  ( ( ( 1  -  s )  x.  ( Z `  j ) )  +  ( s  x.  ( U `  j )
) ) ) )
225, 21anbi12d 692 . . . 4  |-  ( ( x  =  y  /\  t  =  s )  ->  ( ( t  e.  ( 0 [,)  +oo )  /\  A. i  e.  ( 1 ... N
) ( x `  i )  =  ( ( ( 1  -  t )  x.  ( Z `  i )
)  +  ( t  x.  ( U `  i ) ) ) )  <->  ( s  e.  ( 0 [,)  +oo )  /\  A. j  e.  ( 1 ... N
) ( y `  j )  =  ( ( ( 1  -  s )  x.  ( Z `  j )
)  +  ( s  x.  ( U `  j ) ) ) ) ) )
233, 22anbi12d 692 . . 3  |-  ( ( x  =  y  /\  t  =  s )  ->  ( ( x  e.  D  /\  ( t  e.  ( 0 [,) 
+oo )  /\  A. i  e.  ( 1 ... N ) ( x `  i )  =  ( ( ( 1  -  t )  x.  ( Z `  i ) )  +  ( t  x.  ( U `  i )
) ) ) )  <-> 
( y  e.  D  /\  ( s  e.  ( 0 [,)  +oo )  /\  A. j  e.  ( 1 ... N ) ( y `  j
)  =  ( ( ( 1  -  s
)  x.  ( Z `
 j ) )  +  ( s  x.  ( U `  j
) ) ) ) ) ) )
2423cbvopabv 4269 . 2  |-  { <. x ,  t >.  |  ( x  e.  D  /\  ( t  e.  ( 0 [,)  +oo )  /\  A. i  e.  ( 1 ... N ) ( x `  i
)  =  ( ( ( 1  -  t
)  x.  ( Z `
 i ) )  +  ( t  x.  ( U `  i
) ) ) ) ) }  =  { <. y ,  s >.  |  ( y  e.  D  /\  ( s  e.  ( 0 [,) 
+oo )  /\  A. j  e.  ( 1 ... N ) ( y `  j )  =  ( ( ( 1  -  s )  x.  ( Z `  j ) )  +  ( s  x.  ( U `  j )
) ) ) ) }
251, 24eqtri 2455 1  |-  F  =  { <. y ,  s
>.  |  ( y  e.  D  /\  (
s  e.  ( 0 [,)  +oo )  /\  A. j  e.  ( 1 ... N ) ( y `  j )  =  ( ( ( 1  -  s )  x.  ( Z `  j ) )  +  ( s  x.  ( U `  j )
) ) ) ) }
Colors of variables: wff set class
Syntax hints:    <-> wb 177    /\ wa 359    = wceq 1652    e. wcel 1725   A.wral 2697   {copab 4257   ` cfv 5446  (class class class)co 6073   0cc0 8982   1c1 8983    + caddc 8985    x. cmul 8987    +oocpnf 9109    - cmin 9283   [,)cico 10910   ...cfz 11035
This theorem is referenced by:  axcontlem6  25900  axcontlem11  25905
This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-3 7  ax-mp 8  ax-gen 1555  ax-5 1566  ax-17 1626  ax-9 1666  ax-8 1687  ax-6 1744  ax-7 1749  ax-11 1761  ax-12 1950  ax-ext 2416
This theorem depends on definitions:  df-bi 178  df-or 360  df-an 361  df-3an 938  df-tru 1328  df-ex 1551  df-nf 1554  df-sb 1659  df-clab 2422  df-cleq 2428  df-clel 2431  df-nfc 2560  df-ral 2702  df-rex 2703  df-rab 2706  df-v 2950  df-dif 3315  df-un 3317  df-in 3319  df-ss 3326  df-nul 3621  df-if 3732  df-sn 3812  df-pr 3813  df-op 3815  df-uni 4008  df-br 4205  df-opab 4259  df-iota 5410  df-fv 5454  df-ov 6076
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