Imperial College London

DrSheehanOlver

Faculty of Natural SciencesDepartment of Mathematics

Reader in Applied Mathematics and Mathematical Physics
 
 
 
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Location

 

Huxley BuildingSouth Kensington Campus

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Summary

 

Publications

Publication Type
Year
to

62 results found

Vasil GM, Burns KJ, Lecoanet D, Olver S, Brown BP, Oishi JSet al., 2016, Tensor calculus in polar coordinates using Jacobi polynomials, Journal of Computational Physics, Vol: 325, Pages: 53-73, ISSN: 0021-9991

Journal article

Bornemann F, Its A, Olver S, Wechslberger Get al., 2016, Numerical methods for the discrete map Z<sup>a</sup>, Advances in Discrete Differential Geometry, Pages: 151-176, ISBN: 9783662504468

As a basic example in nonlinear theories of discrete complex analysis, we explore various numerical methods for the accurate evaluation of the discrete map Za introduced by Agafonov and Bobenko. The methods are based either on a discrete Painlevé equation or on the Riemann-Hilbert method. In the latter case, the underlying structure of a triangular Riemann-Hilbert problem with a non-triangular solution requires special care in the numerical approach. Complexity and numerical stability are discussed, the results are illustrated by numerical examples.

Book chapter

Townsend A, Trogdon T, Olver S, 2016, Fast computation of Gauss quadrature nodes and weights on the whole real line, IMA JOURNAL OF NUMERICAL ANALYSIS, Vol: 36, Pages: 337-358, ISSN: 0272-4979

Journal article

Trogdon T, Olver S, 2016, A Riemann-Hilbert approach to Jacobi operators and Gaussian quadrature, IMA JOURNAL OF NUMERICAL ANALYSIS, Vol: 36, Pages: 174-196, ISSN: 0272-4979

Journal article

Trogdon T, Olver S, 2015, Riemann–Hilbert Problems, Their Numerical Solution, and the Computation of Nonlinear Special Functions, Publisher: Society for Industrial and Applied Mathematics, ISBN: 9781611974195

Book

Townsend A, Olver S, 2015, The automatic solution of partial differential equations using a global spectral method, Journal of Computational Physics

Journal article

Olver S, Nadakuditi RR, Trogdon T, 2015, Sampling unitary ensembles, RANDOM MATRICES-THEORY AND APPLICATIONS, Vol: 4, ISSN: 2010-3263

Journal article

Slevinsky RM, Olver S, 2015, ON THE USE OF CONFORMAL MAPS FOR THE ACCELERATION OF CONVERGENCE OF THE TRAPEZOIDAL RULE AND SINC NUMERICAL METHODS, SIAM JOURNAL ON SCIENTIFIC COMPUTING, Vol: 37, Pages: A676-A700, ISSN: 1064-8275

Journal article

Deift PA, Menon G, Olver S, Trogdon Tet al., 2014, Universality in numerical computations with random data, PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, Vol: 111, Pages: 14973-14978, ISSN: 0027-8424

Journal article

Olver S, Trogdon T, 2014, Nonlinear Steepest Descent and Numerical Solution of Riemann-Hilbert Problems, COMMUNICATIONS ON PURE AND APPLIED MATHEMATICS, Vol: 67, Pages: 1353-1389, ISSN: 0010-3640

Journal article

Olver S, 2014, Change of variable formulas for regularizing slowly decaying and oscillatory Cauchy and Hilbert transforms, ANALYSIS AND APPLICATIONS, Vol: 12, Pages: 369-384, ISSN: 0219-5305

Journal article

Olver S, Trogdon T, 2014, Numerical Solution of Riemann-Hilbert Problems: Random Matrix Theory and Orthogonal Polynomials, CONSTRUCTIVE APPROXIMATION, Vol: 39, Pages: 101-149, ISSN: 0176-4276

Journal article

Olver S, Townsend A, 2014, A practical framework for infinite-dimensional linear algebra, 1st First Workshop High Performance Technical Computing Dynamic Languages Held, Publisher: IEEE, Pages: 57-62

Conference paper

Trogdon T, Olver S, 2013, Numerical inverse scattering for the focusing and defocusing nonlinear Schrodinger equations, PROCEEDINGS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES, Vol: 469, ISSN: 1364-5021

Journal article

Olver S, Townsend A, 2013, A Fast and Well-Conditioned Spectral Method, SIAM REVIEW, Vol: 55, Pages: 462-489, ISSN: 0036-1445

Journal article

Olver S, 2012, A general framework for solving Riemann-Hilbert problems numerically, NUMERISCHE MATHEMATIK, Vol: 122, Pages: 305-340, ISSN: 0029-599X

Journal article

Trogdon T, Olver S, Deconinck B, 2012, Numerical inverse scattering for the Korteweg-de Vries and modified Korteweg-de Vries equations, PHYSICA D-NONLINEAR PHENOMENA, Vol: 241, Pages: 1003-1025, ISSN: 0167-2789

Journal article

Huybrechs D, Olver S, 2012, Superinterpolation in Highly Oscillatory Quadrature, FOUNDATIONS OF COMPUTATIONAL MATHEMATICS, Vol: 12, Pages: 203-228, ISSN: 1615-3375

Journal article

Olver S, 2011, Computation of equilibrium measures, JOURNAL OF APPROXIMATION THEORY, Vol: 163, Pages: 1185-1207, ISSN: 0021-9045

Journal article

Olver S, 2011, COMPUTING THE HILBERT TRANSFORM AND ITS INVERSE, MATHEMATICS OF COMPUTATION, Vol: 80, Pages: 1745-1767, ISSN: 0025-5718

Journal article

Olver S, 2011, Erratum to: Numerical Solution of Riemann-Hilbert Problems: Painlevé II(Found Comput Math, 10.1007/s10208-010-9079-8), Foundations of Computational Mathematics, Vol: 11, ISSN: 1615-3375

Journal article

Olver S, 2011, Numerical Solution of Riemann-Hilbert Problems: Painlev, II, FOUNDATIONS OF COMPUTATIONAL MATHEMATICS, Vol: 11, Pages: 153-179, ISSN: 1615-3375

Journal article

Olver S, 2011, GMRES for oscillatory matrix-valued differential equations, Pages: 267-274, ISBN: 9783642153365

We investigate the use of Krylov subspace methods to solve linear, oscillatory ODEs. When we apply a Krylov subspace method to a properly formulated equation, we retain the asymptotic accuracy of the asymptotic expansion whilst converging to the exact solution. We demonstrate the effectiveness of this method by computing error and Mathieu functions. © 2011 Springer.

Book chapter

Olver S, 2010, Fast, numerically stable computation of oscillatory integrals with stationary points, BIT NUMERICAL MATHEMATICS, Vol: 50, Pages: 149-171, ISSN: 0006-3835

Journal article

Olver S, 2010, Shifted GMRES for oscillatory integrals, NUMERISCHE MATHEMATIK, Vol: 114, Pages: 607-628, ISSN: 0029-599X

Journal article

Olver S, 2009, ON THE CONVERGENCE RATE OF A MODIFIED FOURIER SERIES, MATHEMATICS OF COMPUTATION, Vol: 78, Pages: 1629-1645, ISSN: 0025-5718

Journal article

Olver S, 2009, GMRES FOR THE DIFFERENTIATION OPERATOR, SIAM JOURNAL ON NUMERICAL ANALYSIS, Vol: 47, Pages: 3359-3373, ISSN: 0036-1429

Journal article

Olver S, 2007, Numerical approximation of vector-valued highly oscillatory integrals, BIT NUMERICAL MATHEMATICS, Vol: 47, Pages: 637-655, ISSN: 0006-3835

Journal article

Olver S, 2007, Moment-free numerical approximation of highly oscillatory integrals with stationary points, EUROPEAN JOURNAL OF APPLIED MATHEMATICS, Vol: 18, Pages: 435-447, ISSN: 0956-7925

Journal article

Olver S, 2006, On the quadrature of multivariate highly oscillatory integrals over non-polytope domains, NUMERISCHE MATHEMATIK, Vol: 103, Pages: 643-665, ISSN: 0029-599X

Journal article

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