Tata Institute of Fundamental Research

Perturbations of Non-linear Systems of Differential Equations

Student Seminar
Speaker: Gugan Thoppe
Organiser: Naqueeb Ahmad Warsi
Date: Friday, 11 Jan 2013, 15:00 to 16:30
Venue: A-212 (STCS Seminar Room)

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Abstract:  The method of variation of parameters, credited to J.L. Lagrange, expresses each solution of the perturbed system of differential equations, $x' = A(t)x + f(t)$, in terms of the solution of the associated homogeneous system, $y' = A(t)y$. In this talk, we will give an intuitiveĀ appreciation of why this result is to be expected. Using this understanding, we will then discuss the analogue of this method, developed by V.M. Alekseev, for obtaining solutions to perturbations of nonlinear system of differential equations.