نتایج جستجو برای: first order evolution equations

تعداد نتایج: 2589330  

Journal: :Boletim da Sociedade Paranaense de Matemática 2007

Journal: :Journal of Mathematical Analysis and Applications 2001

Journal: :international journal of mathematical modelling and computations 0
j. mondal department of mathematics,indian institute of engineering science and technology, p. o. botanical garden, howrah - 711103, west bengal, india; k. dhar department of mathematics,iiest, howrah - 711103, west bengal, india.

asymptotically exact and nonlocal fourth order nonlinear evolution equations are derived for two coupled fourth order nonlinear evolution equations have been derived in deep water for two capillary-gravity wave packets propagating in the same direction in the presence of wind flowing over water.we have used a general method, based on zakharov integral equation.on the basis of these evolution eq...

Journal: :Discussiones Mathematicae. Differential Inclusions, Control and Optimization 2008

2000
Giampiero Esposito

The Arnowitt–Deser–Misner (ADM) evolution equations for the induced metric and the extrinsic-curvature tensor of the spacelike surfaces which foliate the space-time manifold in canonical general relativity are a first-order system of quasi-linear partial differential equations, supplemented by the constraint equations. Such equations are here mapped into another first-order system. In particula...

1999
Ünal Göktaş Willy Hereman

A straightforward algorithm for the symbolic computation of higher-order symmetries of nonlinear evolution equations and lattice equations is presented. The scaling properties of the evolution or lattice equations are used to determine the polynomial form of the higher-order symmetries. The coefficients of the symmetry can be found by solving a linear system. The method applies to polynomial sy...

Journal: :Bulletin of the London Mathematical Society 1994

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