ILE Home Intuitionistic Logic Explorer < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  ILE Home  >  Th. List  >  xmetec Unicode version

Theorem xmetec 15319
Description: The equivalence classes under the finite separation equivalence relation are infinity balls. (Contributed by Mario Carneiro, 24-Aug-2015.)
Hypothesis
Ref Expression
xmeter.1  |-  .~  =  ( `' D " RR )
Assertion
Ref Expression
xmetec  |-  ( ( D  e.  ( *Met `  X )  /\  P  e.  X
)  ->  [ P ]  .~  =  ( P ( ball `  D
) +oo ) )

Proof of Theorem xmetec
Dummy variable  x is distinct from all other variables.
StepHypRef Expression
1 xmeter.1 . . . . 5  |-  .~  =  ( `' D " RR )
21xmeterval 15317 . . . 4  |-  ( D  e.  ( *Met `  X )  ->  ( P  .~  x  <->  ( P  e.  X  /\  x  e.  X  /\  ( P D x )  e.  RR ) ) )
3 3anass 1009 . . . . 5  |-  ( ( P  e.  X  /\  x  e.  X  /\  ( P D x )  e.  RR )  <->  ( P  e.  X  /\  (
x  e.  X  /\  ( P D x )  e.  RR ) ) )
43baib 927 . . . 4  |-  ( P  e.  X  ->  (
( P  e.  X  /\  x  e.  X  /\  ( P D x )  e.  RR )  <-> 
( x  e.  X  /\  ( P D x )  e.  RR ) ) )
52, 4sylan9bb 462 . . 3  |-  ( ( D  e.  ( *Met `  X )  /\  P  e.  X
)  ->  ( P  .~  x  <->  ( x  e.  X  /\  ( P D x )  e.  RR ) ) )
6 vex 2818 . . . . 5  |-  x  e. 
_V
76a1i 9 . . . 4  |-  ( D  e.  ( *Met `  X )  ->  x  e.  _V )
8 elecg 6809 . . . 4  |-  ( ( x  e.  _V  /\  P  e.  X )  ->  ( x  e.  [ P ]  .~  <->  P  .~  x ) )
97, 8sylan 283 . . 3  |-  ( ( D  e.  ( *Met `  X )  /\  P  e.  X
)  ->  ( x  e.  [ P ]  .~  <->  P  .~  x ) )
10 xblpnf 15281 . . 3  |-  ( ( D  e.  ( *Met `  X )  /\  P  e.  X
)  ->  ( x  e.  ( P ( ball `  D ) +oo )  <->  ( x  e.  X  /\  ( P D x )  e.  RR ) ) )
115, 9, 103bitr4d 220 . 2  |-  ( ( D  e.  ( *Met `  X )  /\  P  e.  X
)  ->  ( x  e.  [ P ]  .~  <->  x  e.  ( P (
ball `  D ) +oo ) ) )
1211eqrdv 2232 1  |-  ( ( D  e.  ( *Met `  X )  /\  P  e.  X
)  ->  [ P ]  .~  =  ( P ( ball `  D
) +oo ) )
Colors of variables: wff set class
Syntax hints:    -> wi 4    /\ wa 104    <-> wb 105    /\ w3a 1005    = wceq 1398    e. wcel 2205   _Vcvv 2815   class class class wbr 4111   `'ccnv 4750   "cima 4754   ` cfv 5354  (class class class)co 6052   [cec 6767   RRcr 8128   +oocpnf 8307   *Metcxmet 14701   ballcbl 14703
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-in1 619  ax-in2 620  ax-io 717  ax-5 1496  ax-7 1497  ax-gen 1498  ax-ie1 1542  ax-ie2 1543  ax-8 1553  ax-10 1554  ax-11 1555  ax-i12 1556  ax-bndl 1558  ax-4 1559  ax-17 1575  ax-i9 1579  ax-ial 1583  ax-i5r 1584  ax-13 2207  ax-14 2208  ax-ext 2216  ax-sep 4230  ax-pow 4289  ax-pr 4324  ax-un 4556  ax-setind 4661  ax-cnex 8220  ax-resscn 8221  ax-1cn 8222  ax-1re 8223  ax-icn 8224  ax-addcl 8225  ax-addrcl 8226  ax-mulcl 8227  ax-mulrcl 8228  ax-addcom 8229  ax-mulcom 8230  ax-addass 8231  ax-mulass 8232  ax-distr 8233  ax-i2m1 8234  ax-0lt1 8235  ax-1rid 8236  ax-0id 8237  ax-rnegex 8238  ax-precex 8239  ax-cnre 8240  ax-pre-ltirr 8241  ax-pre-ltwlin 8242  ax-pre-lttrn 8243  ax-pre-ltadd 8245  ax-pre-mulgt0 8246
This theorem depends on definitions:  df-bi 117  df-dc 843  df-3or 1006  df-3an 1007  df-tru 1401  df-fal 1404  df-nf 1510  df-sb 1812  df-eu 2085  df-mo 2086  df-clab 2221  df-cleq 2227  df-clel 2230  df-nfc 2375  df-ne 2415  df-nel 2510  df-ral 2527  df-rex 2528  df-reu 2529  df-rab 2531  df-v 2817  df-sbc 3045  df-csb 3141  df-dif 3215  df-un 3217  df-in 3219  df-ss 3226  df-if 3623  df-pw 3673  df-sn 3697  df-pr 3698  df-op 3700  df-uni 3917  df-iun 3995  df-br 4112  df-opab 4174  df-mpt 4175  df-id 4416  df-po 4419  df-iso 4420  df-xp 4757  df-rel 4758  df-cnv 4759  df-co 4760  df-dm 4761  df-rn 4762  df-res 4763  df-ima 4764  df-iota 5314  df-fun 5356  df-fn 5357  df-f 5358  df-fv 5362  df-riota 6005  df-ov 6055  df-oprab 6056  df-mpo 6057  df-1st 6336  df-2nd 6337  df-ec 6771  df-map 6886  df-pnf 8312  df-mnf 8313  df-xr 8314  df-ltxr 8315  df-le 8316  df-sub 8448  df-neg 8449  df-2 9298  df-xadd 10109  df-psmet 14708  df-xmet 14709  df-bl 14711
This theorem is referenced by:  blssec  15320  blpnfctr  15321
  Copyright terms: Public domain W3C validator