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Theorem blres 17993
Description: A ball in a restricted metric space. (Contributed by Mario Carneiro, 5-Jan-2014.)
Hypothesis
Ref Expression
blres.2  |-  C  =  ( D  |`  ( Y  X.  Y ) )
Assertion
Ref Expression
blres  |-  ( ( D  e.  ( * Met `  X )  /\  P  e.  ( X  i^i  Y )  /\  R  e.  RR* )  ->  ( P (
ball `  C ) R )  =  ( ( P ( ball `  D ) R )  i^i  Y ) )

Proof of Theorem blres
Dummy variable  x is distinct from all other variables.
StepHypRef Expression
1 inss2 3403 . . . . . . . . . 10  |-  ( X  i^i  Y )  C_  Y
21sseli 3189 . . . . . . . . 9  |-  ( P  e.  ( X  i^i  Y )  ->  P  e.  Y )
3 blres.2 . . . . . . . . . . 11  |-  C  =  ( D  |`  ( Y  X.  Y ) )
43oveqi 5887 . . . . . . . . . 10  |-  ( P C x )  =  ( P ( D  |`  ( Y  X.  Y
) ) x )
5 ovres 6003 . . . . . . . . . 10  |-  ( ( P  e.  Y  /\  x  e.  Y )  ->  ( P ( D  |`  ( Y  X.  Y
) ) x )  =  ( P D x ) )
64, 5syl5eq 2340 . . . . . . . . 9  |-  ( ( P  e.  Y  /\  x  e.  Y )  ->  ( P C x )  =  ( P D x ) )
72, 6sylan 457 . . . . . . . 8  |-  ( ( P  e.  ( X  i^i  Y )  /\  x  e.  Y )  ->  ( P C x )  =  ( P D x ) )
87breq1d 4049 . . . . . . 7  |-  ( ( P  e.  ( X  i^i  Y )  /\  x  e.  Y )  ->  ( ( P C x )  <  R  <->  ( P D x )  <  R ) )
98anbi2d 684 . . . . . 6  |-  ( ( P  e.  ( X  i^i  Y )  /\  x  e.  Y )  ->  ( ( x  e.  X  /\  ( P C x )  < 
R )  <->  ( x  e.  X  /\  ( P D x )  < 
R ) ) )
109pm5.32da 622 . . . . 5  |-  ( P  e.  ( X  i^i  Y )  ->  ( (
x  e.  Y  /\  ( x  e.  X  /\  ( P C x )  <  R ) )  <->  ( x  e.  Y  /\  ( x  e.  X  /\  ( P D x )  < 
R ) ) ) )
11103ad2ant2 977 . . . 4  |-  ( ( D  e.  ( * Met `  X )  /\  P  e.  ( X  i^i  Y )  /\  R  e.  RR* )  ->  ( ( x  e.  Y  /\  (
x  e.  X  /\  ( P C x )  <  R ) )  <-> 
( x  e.  Y  /\  ( x  e.  X  /\  ( P D x )  <  R ) ) ) )
12 elin 3371 . . . . . . 7  |-  ( x  e.  ( X  i^i  Y )  <->  ( x  e.  X  /\  x  e.  Y ) )
13 ancom 437 . . . . . . 7  |-  ( ( x  e.  X  /\  x  e.  Y )  <->  ( x  e.  Y  /\  x  e.  X )
)
1412, 13bitri 240 . . . . . 6  |-  ( x  e.  ( X  i^i  Y )  <->  ( x  e.  Y  /\  x  e.  X ) )
1514anbi1i 676 . . . . 5  |-  ( ( x  e.  ( X  i^i  Y )  /\  ( P C x )  <  R )  <->  ( (
x  e.  Y  /\  x  e.  X )  /\  ( P C x )  <  R ) )
16 anass 630 . . . . 5  |-  ( ( ( x  e.  Y  /\  x  e.  X
)  /\  ( P C x )  < 
R )  <->  ( x  e.  Y  /\  (
x  e.  X  /\  ( P C x )  <  R ) ) )
1715, 16bitri 240 . . . 4  |-  ( ( x  e.  ( X  i^i  Y )  /\  ( P C x )  <  R )  <->  ( x  e.  Y  /\  (
x  e.  X  /\  ( P C x )  <  R ) ) )
18 ancom 437 . . . 4  |-  ( ( ( x  e.  X  /\  ( P D x )  <  R )  /\  x  e.  Y
)  <->  ( x  e.  Y  /\  ( x  e.  X  /\  ( P D x )  < 
R ) ) )
1911, 17, 183bitr4g 279 . . 3  |-  ( ( D  e.  ( * Met `  X )  /\  P  e.  ( X  i^i  Y )  /\  R  e.  RR* )  ->  ( ( x  e.  ( X  i^i  Y )  /\  ( P C x )  < 
R )  <->  ( (
x  e.  X  /\  ( P D x )  <  R )  /\  x  e.  Y )
) )
20 xmetres 17944 . . . . 5  |-  ( D  e.  ( * Met `  X )  ->  ( D  |`  ( Y  X.  Y ) )  e.  ( * Met `  ( X  i^i  Y ) ) )
213, 20syl5eqel 2380 . . . 4  |-  ( D  e.  ( * Met `  X )  ->  C  e.  ( * Met `  ( X  i^i  Y ) ) )
22 elbl 17965 . . . 4  |-  ( ( C  e.  ( * Met `  ( X  i^i  Y ) )  /\  P  e.  ( X  i^i  Y )  /\  R  e.  RR* )  ->  ( x  e.  ( P ( ball `  C ) R )  <-> 
( x  e.  ( X  i^i  Y )  /\  ( P C x )  <  R
) ) )
2321, 22syl3an1 1215 . . 3  |-  ( ( D  e.  ( * Met `  X )  /\  P  e.  ( X  i^i  Y )  /\  R  e.  RR* )  ->  ( x  e.  ( P ( ball `  C ) R )  <-> 
( x  e.  ( X  i^i  Y )  /\  ( P C x )  <  R
) ) )
24 elin 3371 . . . 4  |-  ( x  e.  ( ( P ( ball `  D
) R )  i^i 
Y )  <->  ( x  e.  ( P ( ball `  D ) R )  /\  x  e.  Y
) )
25 inss1 3402 . . . . . . 7  |-  ( X  i^i  Y )  C_  X
2625sseli 3189 . . . . . 6  |-  ( P  e.  ( X  i^i  Y )  ->  P  e.  X )
27 elbl 17965 . . . . . 6  |-  ( ( D  e.  ( * Met `  X )  /\  P  e.  X  /\  R  e.  RR* )  ->  ( x  e.  ( P ( ball `  D
) R )  <->  ( x  e.  X  /\  ( P D x )  < 
R ) ) )
2826, 27syl3an2 1216 . . . . 5  |-  ( ( D  e.  ( * Met `  X )  /\  P  e.  ( X  i^i  Y )  /\  R  e.  RR* )  ->  ( x  e.  ( P ( ball `  D ) R )  <-> 
( x  e.  X  /\  ( P D x )  <  R ) ) )
2928anbi1d 685 . . . 4  |-  ( ( D  e.  ( * Met `  X )  /\  P  e.  ( X  i^i  Y )  /\  R  e.  RR* )  ->  ( ( x  e.  ( P (
ball `  D ) R )  /\  x  e.  Y )  <->  ( (
x  e.  X  /\  ( P D x )  <  R )  /\  x  e.  Y )
) )
3024, 29syl5bb 248 . . 3  |-  ( ( D  e.  ( * Met `  X )  /\  P  e.  ( X  i^i  Y )  /\  R  e.  RR* )  ->  ( x  e.  ( ( P (
ball `  D ) R )  i^i  Y
)  <->  ( ( x  e.  X  /\  ( P D x )  < 
R )  /\  x  e.  Y ) ) )
3119, 23, 303bitr4d 276 . 2  |-  ( ( D  e.  ( * Met `  X )  /\  P  e.  ( X  i^i  Y )  /\  R  e.  RR* )  ->  ( x  e.  ( P ( ball `  C ) R )  <-> 
x  e.  ( ( P ( ball `  D
) R )  i^i 
Y ) ) )
3231eqrdv 2294 1  |-  ( ( D  e.  ( * Met `  X )  /\  P  e.  ( X  i^i  Y )  /\  R  e.  RR* )  ->  ( P (
ball `  C ) R )  =  ( ( P ( ball `  D ) R )  i^i  Y ) )
Colors of variables: wff set class
Syntax hints:    -> wi 4    <-> wb 176    /\ wa 358    /\ w3a 934    = wceq 1632    e. wcel 1696    i^i cin 3164   class class class wbr 4039    X. cxp 4703    |` cres 4707   ` cfv 5271  (class class class)co 5874   RR*cxr 8882    < clt 8883   * Metcxmt 16385   ballcbl 16387
This theorem is referenced by:  metrest  18086  xrsmopn  18334  lebnumii  18480  blssp  26573  sstotbnd2  26601  blbnd  26614  ssbnd  26615
This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-3 7  ax-mp 8  ax-gen 1536  ax-5 1547  ax-17 1606  ax-9 1644  ax-8 1661  ax-13 1698  ax-14 1700  ax-6 1715  ax-7 1720  ax-11 1727  ax-12 1878  ax-ext 2277  ax-sep 4157  ax-nul 4165  ax-pow 4204  ax-pr 4230  ax-un 4528  ax-cnex 8809  ax-resscn 8810
This theorem depends on definitions:  df-bi 177  df-or 359  df-an 360  df-3an 936  df-tru 1310  df-ex 1532  df-nf 1535  df-sb 1639  df-eu 2160  df-mo 2161  df-clab 2283  df-cleq 2289  df-clel 2292  df-nfc 2421  df-ne 2461  df-ral 2561  df-rex 2562  df-rab 2565  df-v 2803  df-sbc 3005  df-csb 3095  df-dif 3168  df-un 3170  df-in 3172  df-ss 3179  df-nul 3469  df-if 3579  df-pw 3640  df-sn 3659  df-pr 3660  df-op 3662  df-uni 3844  df-iun 3923  df-br 4040  df-opab 4094  df-mpt 4095  df-id 4325  df-xp 4711  df-rel 4712  df-cnv 4713  df-co 4714  df-dm 4715  df-rn 4716  df-res 4717  df-ima 4718  df-iota 5235  df-fun 5273  df-fn 5274  df-f 5275  df-fv 5279  df-ov 5877  df-oprab 5878  df-mpt2 5879  df-1st 6138  df-2nd 6139  df-map 6790  df-xr 8887  df-xmet 16389  df-bl 16391
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