Some results about big and little lip (Q1664041)

The celebrated Rademacher theorem asserts that any Lipschitz function \(f:{\mathbb R}\rightarrow{\mathbb R}\) is differentiable almost everywhere. The paper under review establishes that one can weaken the Lipschitz hypothesis in Rademacher's theorem and still reach the same conclusion by requiring that \(f\) satisfies weaker assumptions.