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when toggle format what by license comment
Dec 3, 2013 at 21:41 comment added Seirios Here, $B(a,b)$ is the open ball of radius $b$ centered at $a$.
Dec 3, 2013 at 10:09 comment added Turbo What is $B(a,b)$ here?
S Dec 3, 2013 at 7:51 history answered Seirios CC BY-SA 3.0
S Dec 3, 2013 at 7:51 history made wiki Post Made Community Wiki by Seirios