What is a smooth surface?
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What is a smooth surface in terms of tangents and normals? I read in a book that surfaces are smooth if its surface normals depend continuously on the points of that surface. I did not understand this definition, could somebody simplify it for me?
multivariable-calculus surfaces
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edited Feb 19 '14 at 11:38
Maroon
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asked Jul 21 '13 at 19:25
sagar
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