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

Theorem blssec 15161
Description: A ball centered at  P is contained in the set of points finitely separated from  P. This is just an application of ssbl 15149 to the infinity ball. (Contributed by Mario Carneiro, 24-Aug-2015.)
Hypothesis
Ref Expression
xmeter.1  |-  .~  =  ( `' D " RR )
Assertion
Ref Expression
blssec  |-  ( ( D  e.  ( *Met `  X )  /\  P  e.  X  /\  S  e.  RR* )  ->  ( P ( ball `  D ) S ) 
C_  [ P ]  .~  )

Proof of Theorem blssec
StepHypRef Expression
1 pnfge 10023 . . . . 5  |-  ( S  e.  RR*  ->  S  <_ +oo )
21adantl 277 . . . 4  |-  ( ( ( D  e.  ( *Met `  X
)  /\  P  e.  X )  /\  S  e.  RR* )  ->  S  <_ +oo )
3 pnfxr 8231 . . . . 5  |- +oo  e.  RR*
4 ssbl 15149 . . . . . 6  |-  ( ( ( D  e.  ( *Met `  X
)  /\  P  e.  X )  /\  ( S  e.  RR*  /\ +oo  e.  RR* )  /\  S  <_ +oo )  ->  ( P ( ball `  D
) S )  C_  ( P ( ball `  D
) +oo ) )
543expia 1231 . . . . 5  |-  ( ( ( D  e.  ( *Met `  X
)  /\  P  e.  X )  /\  ( S  e.  RR*  /\ +oo  e.  RR* ) )  -> 
( S  <_ +oo  ->  ( P ( ball `  D
) S )  C_  ( P ( ball `  D
) +oo ) ) )
63, 5mpanr2 438 . . . 4  |-  ( ( ( D  e.  ( *Met `  X
)  /\  P  e.  X )  /\  S  e.  RR* )  ->  ( S  <_ +oo  ->  ( P ( ball `  D
) S )  C_  ( P ( ball `  D
) +oo ) ) )
72, 6mpd 13 . . 3  |-  ( ( ( D  e.  ( *Met `  X
)  /\  P  e.  X )  /\  S  e.  RR* )  ->  ( P ( ball `  D
) S )  C_  ( P ( ball `  D
) +oo ) )
873impa 1220 . 2  |-  ( ( D  e.  ( *Met `  X )  /\  P  e.  X  /\  S  e.  RR* )  ->  ( P ( ball `  D ) S ) 
C_  ( P (
ball `  D ) +oo ) )
9 xmeter.1 . . . 4  |-  .~  =  ( `' D " RR )
109xmetec 15160 . . 3  |-  ( ( D  e.  ( *Met `  X )  /\  P  e.  X
)  ->  [ P ]  .~  =  ( P ( ball `  D
) +oo ) )
11103adant3 1043 . 2  |-  ( ( D  e.  ( *Met `  X )  /\  P  e.  X  /\  S  e.  RR* )  ->  [ P ]  .~  =  ( P (
ball `  D ) +oo ) )
128, 11sseqtrrd 3266 1  |-  ( ( D  e.  ( *Met `  X )  /\  P  e.  X  /\  S  e.  RR* )  ->  ( P ( ball `  D ) S ) 
C_  [ P ]  .~  )
Colors of variables: wff set class
Syntax hints:    -> wi 4    /\ wa 104    /\ w3a 1004    = wceq 1397    e. wcel 2202    C_ wss 3200   class class class wbr 4088   `'ccnv 4724   "cima 4728   ` cfv 5326  (class class class)co 6017   [cec 6699   RRcr 8030   +oocpnf 8210   RR*cxr 8212    <_ cle 8214   *Metcxmet 14549   ballcbl 14551
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 716  ax-5 1495  ax-7 1496  ax-gen 1497  ax-ie1 1541  ax-ie2 1542  ax-8 1552  ax-10 1553  ax-11 1554  ax-i12 1555  ax-bndl 1557  ax-4 1558  ax-17 1574  ax-i9 1578  ax-ial 1582  ax-i5r 1583  ax-13 2204  ax-14 2205  ax-ext 2213  ax-sep 4207  ax-pow 4264  ax-pr 4299  ax-un 4530  ax-setind 4635  ax-cnex 8122  ax-resscn 8123  ax-1cn 8124  ax-1re 8125  ax-icn 8126  ax-addcl 8127  ax-addrcl 8128  ax-mulcl 8129  ax-mulrcl 8130  ax-addcom 8131  ax-mulcom 8132  ax-addass 8133  ax-mulass 8134  ax-distr 8135  ax-i2m1 8136  ax-0lt1 8137  ax-1rid 8138  ax-0id 8139  ax-rnegex 8140  ax-precex 8141  ax-cnre 8142  ax-pre-ltirr 8143  ax-pre-ltwlin 8144  ax-pre-lttrn 8145  ax-pre-apti 8146  ax-pre-ltadd 8147  ax-pre-mulgt0 8148
This theorem depends on definitions:  df-bi 117  df-stab 838  df-dc 842  df-3or 1005  df-3an 1006  df-tru 1400  df-fal 1403  df-nf 1509  df-sb 1811  df-eu 2082  df-mo 2083  df-clab 2218  df-cleq 2224  df-clel 2227  df-nfc 2363  df-ne 2403  df-nel 2498  df-ral 2515  df-rex 2516  df-reu 2517  df-rab 2519  df-v 2804  df-sbc 3032  df-csb 3128  df-dif 3202  df-un 3204  df-in 3206  df-ss 3213  df-if 3606  df-pw 3654  df-sn 3675  df-pr 3676  df-op 3678  df-uni 3894  df-iun 3972  df-br 4089  df-opab 4151  df-mpt 4152  df-id 4390  df-po 4393  df-iso 4394  df-xp 4731  df-rel 4732  df-cnv 4733  df-co 4734  df-dm 4735  df-rn 4736  df-res 4737  df-ima 4738  df-iota 5286  df-fun 5328  df-fn 5329  df-f 5330  df-fv 5334  df-riota 5970  df-ov 6020  df-oprab 6021  df-mpo 6022  df-1st 6302  df-2nd 6303  df-ec 6703  df-map 6818  df-pnf 8215  df-mnf 8216  df-xr 8217  df-ltxr 8218  df-le 8219  df-sub 8351  df-neg 8352  df-2 9201  df-xneg 10006  df-xadd 10007  df-psmet 14556  df-xmet 14557  df-bl 14559
This theorem is referenced by:  xmetresbl  15163
  Copyright terms: Public domain W3C validator