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G 11
G 22 y B = A 1 , G 22
G 11 y L =0 , G 11
=0
G 22
B
Orientation preserving conformeomorphism:
x L x B
E 2 )
(1 − E 2 sin 2 B )cos B > 0 ,
A 1 (1
=( x L y B
x B y L )=
(15.16)
y L y B
due to − π/ 2 <B< + π/ 2 cos B> 0 .
End of Example.
The UMP solution of the Korn-Lichtenstein equations subject to the vectorial Laplace-Beltrami
equations as integrability conditions and the condition of orientation conservation is based upon
the constraint of the following type: map the equator equidistantly, for instance, x ( B =0)= A 1 Λ .
Example 15.2 (Universal Polar Stereographic Projection (UPS)).
E 2 1 E
E/ 2
tan π
1+ E sin B
1
E/ 2
2 A 1
B
2
x =
1
4
cos L,
1+ E
E sin B
(15.17)
1
E/ 2
tan π
1+ E sin B
1
E/ 2
2 A 1
E
1+ E
B
2
1 − E 2
y =
4
sin L,
E sin B
2
A 1 ,A 1 ,A 2
The matrix of the metric of the ellipsoid-of-revolution
E
is represented by
= A 1 cos 2 B
.
G 11 G 12
0
1 −E 2 sin 2 B
G MN =
(15.18)
A 1 (1 −E 2 ) 2
0
G 12 G 22
E 2 sin 2 B ) 3
(1
The mapping equations of type UPS imply
x L =
f ( B )sin L, x B = f ( B )cos L,
(15.19)
y L = f ( B )cos L, y B = f ( B )sin L,
subject to
f ( B ):=
1
E/ 2
tan π
1+ E sin B
1
E/ 2
2 A 1
1 − E 2
E
1+ E
B
2
:=
4
,
E sin B
f ( B ) :=
(15.20)
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