Real-analytic non-integrable functions on the plane with equal iterated integrals
This note shows that there exists in $C(\mathbb{R}^2)$ a dense subspace of real-analytic functions in which each nonzero member is not integrable on $\mathbb{R}^2$ but yet has equal iterated integrals in the two orders.
scientific article; zbMATH DE number 7466705