4. Let the torus T be the image of the map T(u, v) = (x(u, v), y(u, v), z(u, v)) = ((R+r cos v) cos u, (R+r cos v) sin u, r sin v) for all u, v € [0, 2π]. Here T is neither injective nor surjective and R>r> 0. Show that T is a sequentially compact set in R³.
4. Let the torus T be the image of the map T(u, v) = (x(u, v), y(u, v), z(u, v)) = ((R+r cos v) cos u, (R+r cos v) sin u, r sin v) for all u, v € [0, 2π]. Here T is neither injective nor surjective and R>r> 0. Show that T is a sequentially compact set in R³.
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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