Abstract
New methods are proposed for evaluation of one-dimensional
highly oscillatory integrals with and without critical points. These integrals are hard to approximate due to the existence of high oscillations of
the integrand and to take care of the critical point in the domain interval.
Levin procedure with Gaussian radial basis function is implemented to
evaluate oscillatory integrals without critical point. The meshless method
is coupled with multi-resolution analysis in a new shape to handle the
critical points. Test problems verify accuracy and efficiency of the new
methods.
Sakhi Zaman, Suliman, Siraj-ul-Islam. (2018) An Accurate Computation of Highly Oscillatory Integrals with Critical Points, Punjab University Journal of Mathematics, Volume 50, Issue 4.
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