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JOURNALS // Numerical methods and programming // Archive

Num. Meth. Prog., 2007 Volume 8, Issue 1, Pages 1–5 (Mi vmp463)

This article is cited in 1 paper

Вычислительные методы и приложения

Numerical modeling of growth of multiplicative random quantities

D. A. Gracheva, D. D. Sokoloffb

a Lomonosov Moscow State University, Faculty of Physics
b Lomonosov Moscow State University, Research Computing Center

Abstract: We present some results of numerical modeling for a simple ordinary differential equation with a random coefficient. We compare these results with the previous results obtained when modeling the Jacobi fields on a geodesic line on a manifold with a random curvature. We demonstrate a subexponential growth for the solution, while the solutions to the Jacobi equation grow exponentially. A progressive growth of statistical moments is demonstrated. The sample size sufficient for such a progressive growth is shown to be as large as $10^3$, while the size required for the Jacobi equation is about $10^5$.

Keywords: numerical simulation, equation with random coefficients, Jacobi equation, manifold with random curvature.

UDC: 523.1



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