The sigmoid function is the most commonly used transfer function because of its differentiability. |
A way to visualize differentiability is to interpret the function f as a mapping from one plane to another. |
The conical differentiability of solutions with respect to the boundary variations is exploited. |
The book then returns to foundations with chapters on contiguity and L2 differentiability. |
This module is an exercise on the continuity and differentiability of real functions. |
The cubic spline interpolation procedure uses parts of third degree polynomials that are linked to the grid points by suitable conditions in such a way that continuous differentiability of the yield curve is ensured. |