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anonymous
 one year ago
please can someone teach me metric space balls in R^2 with examples ?
anonymous
 one year ago
please can someone teach me metric space balls in R^2 with examples ?

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zzr0ck3r
 one year ago
Best ResponseYou've already chosen the best response.2balls in R^2 are disks (a circle with the stuff inside). If it is a closed ball we include the outline, if it is not, we don't.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0ok . please give examples

zzr0ck3r
 one year ago
Best ResponseYou've already chosen the best response.2dw:1442530182678:dw imagine that is filled in.

zzr0ck3r
 one year ago
Best ResponseYou've already chosen the best response.2bbiab going to eat. All balls will look like that...

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0i kinow that if i am given a B(15,0.5) THEN THE answer is 15. in a discrete metric but please give such examples in R^2

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0welcome back @zzr0ck3r

zzr0ck3r
 one year ago
Best ResponseYou've already chosen the best response.2I have given you examples.

zzr0ck3r
 one year ago
Best ResponseYou've already chosen the best response.2in R^2 take any point a and radius b then B(a,b) is the disk centered at a with radius b

zzr0ck3r
 one year ago
Best ResponseYou've already chosen the best response.2\[B((a_0,a_1),b)=\{(x_0,x_1)\in R^2\mid \sqrt{(x_0a_0)^2+(x_1a_1)^2} < b\}\]

zzr0ck3r
 one year ago
Best ResponseYou've already chosen the best response.2B((1,0),4) dw:1442534124499:dw

zzr0ck3r
 one year ago
Best ResponseYou've already chosen the best response.2without the border on the circle

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0ok thanks. so that should be open ? what about close?

zzr0ck3r
 one year ago
Best ResponseYou've already chosen the best response.2change the < to \(\le\) and include the border on the picture

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0ok, thanks very much sir
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