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A comment on Executing gradient descent on the earth. Parent comment

Re:Executing gradient descent on the earth by pbhjpbhj on Friday April 20, 2018 @09:08AM (#16884426)
Is there any interesting result that comes from casting a point as being any shape (presumably the point-sphere is also a point-dodecahedron, etc.)?
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Re:Executing gradient descent on the earth by chestervonwinch on Friday April 20, 2018 @10:43AM (#16885146)
Define a topology on any set you'd like and a sphere is just the set of limit points of any open ball.
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