JSTOR Daily

Example of a Monotonic, Everywhere Differentiable Function on ℝ Whose Derivative Is not ...

https://doi.org/10.4169/amer.math.monthly.120.06.566 https://www.jstor.org/stable/10.4169/amer.math.monthly.120.06.566 Abstract We construct an example of a monotonic ...
JSTOR Daily

Analyticity of Almost Everywhere Differentiable Functions

We develop a partitioning lemma (see Lemma 5) for superadditive set functions satisfying certain continuity conditions. This leads to a relatively simple proof of two theorems of A. S. Besicovitch on ...