Geodesic
Asymptotic expansion of moment functions of solutions of nonlinear parabolic equations
Sbornik. Mathematics, Tome 24 (1974) no. 4, pp. 575-591 
M. I. Vishik; A. V. Fursikov. Asymptotic expansion of moment functions of solutions of nonlinear parabolic equations. Sbornik. Mathematics, Tome 24 (1974) no. 4, pp. 575-591. http://geodesic.mathdoc.fr/item/SM_1974_24_4_a6/
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     title = {Asymptotic expansion of moment functions of solutions of nonlinear parabolic equations},
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     url = {http://geodesic.mathdoc.fr/item/SM_1974_24_4_a6/}
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Voir la notice de l'article provenant de la source Math-Net.Ru

Let $ v(t,\xi)$ be the Fourier coefficients of the solution of the Cauchy problem for a nonlinear parabolic equation of the form $$ \frac{\partial u}{\partial t}=-A(D)u+f(u,D^\gamma u),\qquad|\gamma|\leqslant m, $$ where $A(D)$ is a linear elliptic operator of order $m$ and $f(u,D^\gamma u)$ is the nonlinear part of the equation. Then $M(t,\xi_1,\dots,\xi_k,\sigma)$ are the moment functions of the equation, i.e. the average of the function $v(t,\xi_1)\cdots v(t,\xi_k)$ with respect to a probability measure $\mu_\sigma$, where $\sigma$ characterizes the degree of concentration of the measure. In this paper we give an asymptotic expansion for the functions $M(t,\xi_1,\dots,\xi_k,\sigma)$ as $\sigma\to0$. Bibliography: 8 titles.

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