Published Paper

Inserted: 10 dec 2021
Last Updated: 20 oct 2022

Journal: J. Differential Equations
Volume: 337
Pages: 91–137
Year: 2022
Doi: https://doi.org/10.1016/j.jde.2022.07.037

Abstract:

We study the validity of an extension of Frobenius theorem on integral manifolds for some classes of Pfaff-type systems of partial differential equations involving multidimensional ``rough'' signals, i.e.\ ``differentials'' of given H\"{o}lder continuous functions interpreted in a suitable way, similarly to Young Differential Equations in Rough Paths theory. This can be seen as a tool to study solvability of exterior differential systems involving rough differential forms, i.e.\ the forms involving weak (distributional) derivatives of highly irregular (e.g.\ H\"{o}lder continuous) functions; the solutions (integral manifolds) being also some very weakly regular geometric structures.

Keywords: Frobenius theorem, Rough paths, External differential systems, Young differential equations, Weak geometric structures

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