Lemme de coherence et théorème de Noether stochastique

Details Lemme de coherence et théorème de Noether stochastique Lemme de coherence et théorème de Noether stochastique

2005-10-30

arxiv.org/abs/math/0510656v1

Mathematics

Probability

4 pages

Scientific paper

The stochastic embedding procedure associates a stochastic Euler-Lagrange equation (SEL) to the standard Euler-Lagrange equation (EL). Can we derive (SEL) from a generalized least action principle? To address this question, we develop a stochastic calculus of variation initiated by Yasue. We give a stochastic analog F of the lagrangian action functional. We introduce a notion of stationarity according to which the solutions of (SEL) are the stationary points of F. This notion of stationarity brings coherence to stochastic calculus of variation with respect to stochastic embedding. Finally, we prove a stochastic Noether theorem which introduces an original notion of stochastic first integral.

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