Maximal generalization of Lanczos' derivative using one-dimensional integrals
arXiv:1906.04921
Abstract
Derivative of a function can be expressed in terms of integration over a small neighborhood of the point of differentiation, so-called differentiation by integration method. In this text a maximal generalization of existing results which use one-dimensional integrals is presented together with some interesting non-analytic weight functions.
8 pages