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Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
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Non euclidian geometry.
Independence of the parallel postulate.
Consider a sphere E with center at the origin and radius equal to 1, following the Beltrami-
Klein model, solve:
a. For each point (x, y, 0) calculate the parametric equation of the line 1(x,y) (t) that passes
through the points (0,0,1) and (x, y,0).
b. When x² + y² ≤ 1, find the point F(x, y) that is the intersection of l(x,y) (t) with the sphere
E.
c. Define the function p(x, y,0) = F(x, y), this function identifies the open circle C in the plane
xy with equation x² + y² < 1 in the lower hemisphere of the sphere E. In what transforms a
string in C?
Transcribed Image Text:Non euclidian geometry. Independence of the parallel postulate. Consider a sphere E with center at the origin and radius equal to 1, following the Beltrami- Klein model, solve: a. For each point (x, y, 0) calculate the parametric equation of the line 1(x,y) (t) that passes through the points (0,0,1) and (x, y,0). b. When x² + y² ≤ 1, find the point F(x, y) that is the intersection of l(x,y) (t) with the sphere E. c. Define the function p(x, y,0) = F(x, y), this function identifies the open circle C in the plane xy with equation x² + y² < 1 in the lower hemisphere of the sphere E. In what transforms a string in C?
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