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Original Articles

The evaluation of infinite range oscillatory integrals using optimal contours in the complex plane

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Pages 39-52 | Received 03 May 1996, Published online: 19 Mar 2007
 

Abstract

A method is proposed for the evaluation of infinite range irregular oscillatory integrals of the form

which is based on finding a contour in complex space which removes the oscillatory part. The resulting integral can then be evaluated conventionally. Conditions on f are found for this process to be valid, and comparisons made with alternative methods. A highly competive algorithm is generated.

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