Lines Matching full:sphere
1065 For example, a sphere in three dimensions is a two dimensional
1067 the sphere, the plane tangent to it defines a two dimensional
1068 tangent space. For a cost function defined on this sphere, given a
1069 point :math:`x`, moving in the direction normal to the sphere at
1071 on a sphere is to optimize over two dimensional vector
1072 :math:`\Delta x` in the tangent space at the point on the sphere
1074 move operation involves projecting back onto the sphere. Doing so
