Abstract integration, Combinatorics of Trees and Differential Equations

Details Abstract integration, Combinatorics of Trees and Differential Equations Abstract integration, Combinatorics of Trees and Differential Equations

2008-09-10

arxiv.org/abs/0809.1821v1

Mathematics

Classical Analysis and ODEs

17 pages

Scientific paper

This is a review paper on recent work about the connections between rough path theory, the Connes-Kreimer Hopf algebra on rooted trees and the analysis of finite and infinite dimensional differential equation. We try to explain and motivate the theory of rough paths introduced by T. Lyons in the context of differential equations in presence of irregular noises. We show how it is used in an abstract algebraic approach to the definition of integrals over paths which involves a cochain complex of finite increments. In the context of such abstract integration theories we outline a connection with the combinatorics of rooted trees. As interesting examples where these ideas apply we present two infinite dimensional dynamical systems: the Navier-Stokes equation and the Korteweg-de-Vries equation.

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