Nederivovatelné funkce
Non-differentiability of Feynman paths
A well-known mathematical property of the particle paths of Brownian motion is that such paths are, with probability one, everywhere continuous and nowhere differentiable. R. Feynman (1965) and elsewhere asserted without proof that an analogous property holds for the sample paths (or possible paths) of a non-relativistic quantum mechanical particle to which a conservative force is applied. Using the non-absolute integration theory of Kurzweil and Henstock, this article provides an introductory proof...
Nondifferentiable functions, Haar null sets and Wiener measure
Nonwhere differentiable solutions of a system of functional equations. (Summary).
Nowhere differentiable solutions of a system of functional equations.