Differentiable Functions On Manifolds
See also: Differentiable manifold#Differentiable functionsIf M is a differentiable manifold, a real or complex-valued function ƒ on M is said to be differentiable at a point p if it is differentiable with respect to some (or any) coordinate chart defined around p. More generally, if M and N are differentiable manifolds, a function ƒ: M → N is said to be differentiable at a point p if it is differentiable with respect to some (or any) coordinate charts defined around p and ƒ(p).
Read more about this topic: Local Linearity
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“When Western people train the mind, the focus is generally on the left hemisphere of the cortex, which is the portion of the brain that is concerned with words and numbers. We enhance the logical, bounded, linear functions of the mind. In the East, exercises of this sort are for the purpose of getting in tune with the unconscious—to get rid of boundaries, not to create them.”
—Edward T. Hall (b. 1914)