A surface parameterized in variables and is called smooth if the tangent vectors in the and directions satisfy
where is a cross product.
A surface parameterized in variables and is called smooth if the tangent vectors in the and directions satisfy
where is a cross product.
Weisstein, Eric W. "Smooth Surface." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/SmoothSurface.html