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National and Regional Contests
Iran Contests
Pre-Preparation Course Examination
2008 Pre-Preparation Course Examination
3
3
Part of
2008 Pre-Preparation Course Examination
Problems
(1)
Pointed distributed over a sphere
Source: Iran PPCE 2008
12/29/2008
Prove that we can put
Ω
(
1
ϵ
)
\Omega(\frac1{\epsilon})
Ω
(
ϵ
1
)
points on surface of a sphere with radius 1 such that distance of each of these points and the plane passing through center and two of other points is at least
ϵ
\epsilon
ϵ
.
geometry
3D geometry
sphere
probability and stats