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n=8 Square antiprism(anticube). Images: A critical points scheme for Generating uniformly distributed points on a sphere
Szerző:
Roman Chijner
Témák:
Algebra
,
Kalkulus
,
Kör
,
Differenciálszámítás
,
Egyenletek
,
Geometria
,
Grafikon
,
Metszet
,
Matematika
,
Gömb
,
Négyzet
,
Felület
,
Vektorok
A system of points on a sphere S of radius R “induces” on the sphere S0 of radius R0 three different sets of points, which are
geometric medians (GM)
-local
maxima
,
minima
and
saddle
points sum of distance function f(x). The angular coordinates of the spherical distribution of a system of points -
local minima
coincide with the original system of points.
Distribution of points P
i,
test Point
,
Max
/
min
/
saddle
-
Critical points
on a sphere. Vectors ∇f and ∇g at these points.
max:
Gyroelongated square bipyramid
min:
Anticube
sad:
Octagonal Antiprism
Two-variable function f(φ,θ) over a rectangular region: - π ≤φ ≤ π; -π/2≤θ≤π/2.
Intersection points of implicit functions over a rectangular region: - π ≤φ ≤ π; -π/2≤θ≤π/2.
Isolines and Intersection points of implicit functions over a rectangular region: - π ≤φ ≤ π; -π/2≤θ≤π/2.
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