Download e-book for kindle: A first course in the numerical analysis of differential by Arieh Iserles

By Arieh Iserles

ISBN-10: 0521734908

ISBN-13: 9780521734905

Numerical research provides diverse faces to the realm. For mathematicians it's a bona fide mathematical thought with an appropriate flavour. For scientists and engineers it's a sensible, utilized topic, a part of the traditional repertoire of modelling recommendations. For computing device scientists it's a thought at the interaction of laptop structure and algorithms for real-number calculations. the strain among those standpoints is the motive force of this ebook, which offers a rigorous account of the basics of numerical research of either usual and partial differential equations. The exposition continues a stability among theoretical, algorithmic and utilized features. This new version has been generally up-to-date, and comprises new chapters on rising topic components: geometric numerical integration, spectral equipment and conjugate gradients. different themes lined contain multistep and Runge-Kutta tools; finite distinction and finite parts recommendations for the Poisson equation; and a number of algorithms to resolve huge, sparse algebraic platforms.

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Additional info for A first course in the numerical analysis of differential equations

Sample text

Birkhoff, G. -C. (1978), Ordinary Differential Equations (3rd edn), Wiley, New York. E. C. (1986), Elementary Differential Equations and Boundary Value Problems (4th edn), Wiley, New York. D. and de Boor, C. (1990), Elementary Numerical Analysis: An Algorithmic Approach (3rd edn), McGraw-Hill K¯ ogakusha, Tokyo. P. and Wanner, G. (1991), Solving Ordinary Differential Equations I: Nonstiff Problems (2nd edn) Springer-Verlag, Berlin. Isaacson, E. B. (1966), Analysis of Numerical Methods, Wiley, New York.

By their very nature, analytic concepts involve infinite processes and continua, hence one can expect analytic conditions to be difficult to verify, to the point of unmanageability. For all we know, the human brain (exactly like a digital computer) might be essentially an algebraic machine. It is thus an important goal in mathematical analysis to search for equivalent algebraic conditions. The Dahlquist equivalence theorem is a remarkable example of this: everything essentially reduces to determining whether the zeros of a polynomial reside in a unit disc, and this can be checked in a finite number of algebraic operations!

It is explicit for θ = 1, otherwise implicit. 13) geometrically – the slope of the solution is assumed to be piecewise constant and provided by a linear combination of derivatives at the endpoints of each interval – we prefer the formal route of a Taylor expansion. Thus, substituting the exact solution y(t), y(tn+1 ) − y(tn ) − h[θf (tn , y(tn )) + (1 − θ)f (tn+1 , y(tn+1 ))] = y(tn+1 ) − y(tn ) − h[θy (tn ) + (1 − θ)y (tn+1 )] = y(tn ) + hy (tn ) + 12 h2 y (tn ) + 16 h3 y (tn ) − y(tn ) − h θy (tn ) + (1 − θ) y (tn ) + hy (tn ) + 12 h2 y (tn ) = θ− 1 2 h2 y (tn ) + 1 2θ − 1 3 + O h4 h3 y (tn ) + O h4 .

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A first course in the numerical analysis of differential equations by Arieh Iserles


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