Read e-book online Applications of Lie Groups to Difference Equations PDF

By Vladimir Dorodnitsyn

ISBN-10: 1138118230

ISBN-13: 9781138118232

ISBN-10: 1420083090

ISBN-13: 9781420083095

Intended for researchers, numerical analysts, and graduate scholars in numerous fields of utilized arithmetic, physics, mechanics, and engineering sciences, Applications of Lie teams to distinction Equations is the 1st e-book to supply a scientific development of invariant distinction schemes for nonlinear differential equations. A advisor to equipment and ends up in a brand new sector of program of Lie teams to distinction equations, distinction meshes (lattices), and distinction functionals, this booklet makes a speciality of the renovation of entire symmetry of unique differential equations in numerical schemes. This symmetry protection leads to symmetry aid of the variation version in addition to that of the unique partial differential equations and so as relief for usual distinction equations.

A immense a part of the e-book is worried with conservation legislation and primary integrals for distinction versions. The variational method and Noether kind theorems for distinction equations are awarded within the framework of the Lagrangian and Hamiltonian formalism for distinction equations.

In addition, the booklet develops distinction mesh geometry in response to a symmetry team, simply because diverse symmetries are proven to require varied geometric mesh constructions. the tactic of finite-difference invariants offers the mesh producing equation, any particular case of which promises the mesh invariance. a couple of examples of invariant meshes is gifted. specifically, and with quite a few purposes in numerics for non-stop media, that the majority evolution PDEs have to be approximated on relocating meshes.

Based at the constructed approach to finite-difference invariants, the sensible sections of the booklet current dozens of examples of invariant schemes and meshes for physics and mechanics. particularly, there are new examples of invariant schemes for second-order ODEs, for the linear and nonlinear warmth equation with a resource, and for famous equations together with Burgers equation, the KdV equation, and the Schrödinger equation.

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Applications of Lie Groups to Difference Equations (Differential and Integral Equations and Their Applications) by Vladimir Dorodnitsyn

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