Is the following statement is True/false ? reagarding closed ball
778
For $x∈\mathbb{R}^n$ , let $B(x,r)$ denote the closed ball in $\mathbb{R}^n$(with Euclidean norm) of radius $r$ centered at $x$
158155
Is set of isolated points of S closed?
1571
Balls and Urn Paradox
109046
Is the complement of an open ball in a Banach space connected?
2699
Pool game ball path line
143254
Closed ball not a manifold.
74673
True or false: if $f'(c)<0$, then $f$ is concave down at $x=c$?
156234
Why is the Converse to Lagrange's Theorem False?
80236
Any ball is connected?
62698
Multiple colliding balls
40438
Proving that closed (and open) balls are convex
128641
Confusion on offside rule
130028
Why is a statement "vacuously true" if the hypothesis is false, or not satisfied?
128482
The set of subsequential limits is closed
135129
Proving an entire  function which misses a ball is constant
4041
Claims and questions regarding $n$-ball distribution?
136808
Bowling ball on a rubber sheet analogy - what pulls the ball down