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Professor Arieh Iserles | Department of Applied Mathematics and…
www.damtp.cam.ac.uk/person/ai1018 May 2024: the solution of rapidly oscillating ordinary differential equations, computation of spectra of Fredholm operators with highly oscillatory kernels and rapid approximation of functions by Birkhoff series. -
Professor Arieh Iserles | Cantab Capital Institute for the…
www.damtp.cam.ac.uk/research/ccimi/person/ai1018 May 2024: the solution of rapidly oscillating ordinary differential equations, computation of spectra of Fredholm operators with highly oscillatory kernels and rapid approximation of functions by Birkhoff series. -
Georg Maierhofer - Hooke Research Fellow at the University of Oxford
www.damtp.cam.ac.uk/user/gam37/1 May 2024: Analysis of collocation methods for Fredholm integral equations. In collaboration with Prof. ... Convergence analysis of least-squares oversampled collocation methods for Fredholm integral equations. -
Numerical analysis preprints, 2001–2010 2010: NA2010/01: Arieh…
www.damtp.cam.ac.uk/user/na/NA_Group/Reports01_10.html26 Jan 2017: NA2009/03: Hermann Brunner, Arieh Iserles & Syvert Nørsett, "The computation of the spectra of highly oscillatory Fredholm integral operators". ... NA2008/05: Hermann Brunner, Arieh Iserles & Syvert Nørsett, "The spectral problem for a class of highly -
hop07spec.dvi
www.damtp.cam.ac.uk/user/na/NA_papers/NA2008_05.pdf10 Apr 2008: corresponding to a Fredholm integral operator of rank 2. Its (unique) solution is given by. ... There are two numerical challenges commonly associated with Fredholm operators of thesecond kind. -
Paper2A.dvi
www.damtp.cam.ac.uk/user/na/NA_papers/NA2009_03.pdf30 Nov 2009: Spectra of highly oscillatory Fredholm integral operators 15. =. 1. 1Pm(x) cos ωxdx. ... Spectra of highly oscillatory Fredholm integral operators 29. 3.5 Large-n asymptotics. -
COMPUTING SPECTRA – ON THE SOLVABILITY COMPLEXITY INDEX HIERARCHYAND…
www.damtp.cam.ac.uk/research/afha/anders/SCI_FINAL.pdf20 Nov 2023: COMPUTING SPECTRA – ON THE SOLVABILITY COMPLEXITY INDEX HIERARCHYAND TOWERS OF ALGORITHMS. J. BEN-ARTZI, M. J. COLBROOK, A. C. HANSEN, O. NEVANLINNA, AND M. SEIDEL. ABSTRACT. This paper establishes the Solvability Complexity Index (SCI) hierarchy -
Publications: Refereed Journals Jing Gao & Arieh Iserles, "A …
www.damtp.cam.ac.uk/user/na/people/Arieh/Arieh_Iserles/Papers.html22 Feb 2024: H. Brunner, A. Iserles & S. Nørsett, "The computation of the spectra of highly oscillatory Fredholm integral operators", J. ... Nørsett, "The spectral problem for a class of highly oscillatory Fredholm differential equations" IMA J. -
On the infinite-dimensional QR algorithm Matthew J. Colbrook*† and ...
www.damtp.cam.ac.uk/research/afha/anders/InfQR_COLBROOK.pdf6 Dec 2020: σess(T) = {z C : T zI is not Fredholm}, ress(T) = sup{|z| : z σess(T)}. -
Arieh Iserles: Research My main research is on various ...
www.damtp.cam.ac.uk/user/na/people/Arieh/Arieh_Iserles/Research.html3 Aug 2016: Spectral theory of highly oscillatory Fredholm operators, e.g. the Fox–Li equation in both its operator-theoretic and computational aspects;. -
Nick_retirement_conference
www.damtp.cam.ac.uk/user/mjc249/talks/Nick_NEP_mjc.pdf17 Aug 2023: use contour integration to convert to a linear pencil. 14. Technical point: Spd 𝑇 = 𝜆 Sp 𝑇 :𝜆 isolated,𝑇 𝜆 Fredholm , Spess 𝑇 = Sp 𝑇 Spd 𝑇. -
Complexity Issues in Computing Spectra, Pseudospectra and Resolvents…
www.damtp.cam.ac.uk/research/afha/anders/Banach_Hansen_Nevanlinna_edit2.pdf22 Oct 2016: Complexity Issues in Computing Spectra, Pseudospectra. and Resolvents. Anders C. HansenDAMTP, Centre for Mathematical Sciences. University of CambridgeWilberforce Rd, Cambridge CB3 0WA. United Kingdom. Olavi NevanlinnaDepartment of Mathematics and -
The Fox–Li operator as a test and a spur ...
www.damtp.cam.ac.uk/user/na/NA_papers/NA2011_06.pdf26 Mar 2011: However, in the case at hand wecan say more. There are explicit formulae for the Fredholm determinants ofWiener–Hopf operators with rational symbols. ... Iserles, and S. P. Nørsett, The spectral problem for a class ofhighly oscillatory Fredholm -
Foli_final.dvi
www.damtp.cam.ac.uk/user/na/NA_papers/NA2010_03.pdf17 Mar 2010: Amer. Math. soc. 130 (2001), 1755–1764. [14] F. J. Dyson, Fredholm determinants and inverse scattering problems. ... Commun.Math. Phys. 47 (1976), 171–183. [15] T. Ehrhardt, Dyson’s constant in the asymptotics of the Fredholm determinantof the sine -
D17L.dvi
www.damtp.cam.ac.uk/user/examples/D17L.pdf25 Jan 2007: Unfortunately, in general,vector RH problems cannot be solved in closed form; their solution can be given in terms of linear integralequations of Fredholm type. ... where C is the unit circle.This equation can be solved in closed form because the -
Imperial_NLEVPs
www.damtp.cam.ac.uk/user/mjc249/talks/Imperial_NEP_mjc.pdf15 Jul 2023: Spd 𝑇 = 𝜆 Sp 𝑇 : 𝜆 isolated, 𝑇 𝜆 Fredholm. -
Taming Discretization Challenges for Nonlinear Eigenvalue Problems
www.damtp.cam.ac.uk/user/mjc249/talks/INI_NEP_mjc.pdf26 Jul 2023: Sp 𝑇 = 𝜆 Ω: 𝑇 𝜆 is not invertible. Spd 𝑇 = 𝜆 Sp 𝑇 : 𝜆 isolated, 𝑇 𝜆 Fredholm. -
FoCM: Solve-the-discretize for NLEPS
www.damtp.cam.ac.uk/user/mjc249/talks/FOCM_2023_NEP_mjc.pdf15 Jul 2023: Spd 𝑇 = 𝜆 Sp 𝑇 : 𝜆 isolated, 𝑇 𝜆 Fredholm. -
J. Fluid Mech. (2018), vol. 850, R1, doi:10.1017/jfm.2018.483…
www.damtp.cam.ac.uk/user/lauga/papers/150.pdf16 Jul 2018: Algebraic SBTs typically representthe flow around a rigid body through a one-dimensional Fredholm equation of thesecond kind. ... Similarly to other SBT treatments,these relationships are either linear or a one-dimensional Fredholm equation of thesecond -
First-order trace formulas for the iterates of theFox–Li operator ...
www.damtp.cam.ac.uk/user/na/NA_papers/NA2010_08.pdf30 Jul 2010: described, then for W(aλ)to be Fredholm it is necessary that |ϕ(ξ)| = O(log |ξ|) as |ξ|. ... 11] H. Brunner, A. Iserles, and S. P. Nørsett, The computation of the spectra of highlyoscillatory Fredholm integral operators. -
S-D NLEVPs
www.damtp.cam.ac.uk/user/mjc249/talks/strathclyde_2023_NEP_mjc.pdf15 Jul 2023: Sp 𝑇 = 𝜆 Ω: 𝑇 𝜆 is not invertible. Spd 𝑇 = 𝜆 Sp 𝑇 : 𝜆 isolated, 𝑇 𝜆 Fredholm. -
A programme for computational analysis in the age of data
www.damtp.cam.ac.uk/user/mjc249/talks/SCI_talk_BANFF.pdf18 Apr 2023: Sp 𝑇 = 𝜆 Ω:𝑇 𝜆 is not invertible. Spd 𝑇 = 𝜆 Sp 𝑇 :𝑇 𝜆 Fredholm. -
Numerical Analysis Arieh IserlesCentre for Mathematical…
www.damtp.cam.ac.uk/user/na/NA_papers/NA2012_01.pdf28 Feb 2012: Integral equations. Fredholm equations can be approximated by a variety of techniques (Atkinson 1997).Finite differences are a popular option: thus, for example, 1. ... Another problem associated with Fredholm equations is the calculation of thespectrum -
Convergence analysis of oversampled collocation boundary element…
www.damtp.cam.ac.uk/user/gam37/preprints/preprint_oversampled_collocation_maierhoferhuybrechs.pdf1 May 2024: Numerical experiments are includedfor the two-dimensional Helmholtz equation. Keywords Fredholm Integral Equations Collocation Methods Least-squares oversampling Convergence Analysis. ... In the present work, we are interested in the study of -
Cambridge_New-2010
www.damtp.cam.ac.uk/user/astro/conference_web/talks/Livshits_Mason2010.pdf22 Nov 2010: Standard (“algebraic”) approach to the spectral inverse problem. Fredholm equation of the first kind:. -
Hydrodynamic interactions between a point force and a slender filament
www.damtp.cam.ac.uk/user/lauga/papers/206.pdf29 Jan 2022: The common way to solve this Fredholm integral equation of the second kind is to use theiteration scheme under the assumption α 1 with f = f0 as initial guess [20]. -
6 Generalized Functions We’ve used separation of variables to ...
www.damtp.cam.ac.uk/user/dbs26/1BMethods/Distributions.pdf25 Oct 2018: Green's Functions for Ordinary Differential Equations. The Fredholm Alternative. Green's functions. -
Spectral theory of large Wiener–Hopf operators with complex-symmetric …
www.damtp.cam.ac.uk/user/na/NA_papers/NA2010_09.pdf12 Nov 2010: Spectral theory of large Wiener–Hopf operators with. complex-symmetric kernels and rational symbols. Albrecht Böttcher Sergei Grudsky Arieh Iserles. November 12, 2010. AbstractThis paper is devoted to the asymptotic behaviour of individual -
9 The Method of Characteristics When we studied Laplace’s ...
www.damtp.cam.ac.uk/user/dbs26/1BMethods/Characteristics.pdf26 Nov 2016: Green's Functions for Ordinary Differential Equations. The Fredholm Alternative. Green's functions. -
Pseudoergodic operators and periodic boundary conditions
www.damtp.cam.ac.uk/user/mjc249/pdfs/Pseudoergodic_BCs.pdf22 Jul 2022: MATHEMATICS OF COMPUTATIONVolume 89, Number 322, March 2020, Pages 737–766https://doi.org/10.1090/mcom/3475. Article electronically published on September 12, 2019. PSEUDOERGODIC OPERATORS. AND PERIODIC BOUNDARY CONDITIONS. MATTHEW J. COLBROOK. -
Numerical solution of Hele-Shaw flows driven by a quadrupole
www.damtp.cam.ac.uk/user/hinch/publications/EJAM8_551.pdf10 Jul 2009: n′G(x,x′)p(x. ′). n′. )dl′, (3.2). where x = (x,y). This gives us an inhomogeneous Fredholm equation of the first kind to be solved at. -
Paper1.dvi
www.damtp.cam.ac.uk/user/na/NA_papers/NA2004_02.pdf23 Jan 2004: that. ‖K‖ 14 ‖etÃF̃ etÃ‖h2 O(h3).(2.1)Therefore ‖K‖ scales with h2, rather than with h in standard applications ofNeumann expansions to, say, Fredholm equations of the second -
J. DIFFERENTIAL GEOMETRY17 (1982) 6 6 1 - 6 ...
www.damtp.cam.ac.uk/user/tong/susy/morse.pdf19 Apr 2021: the Fredholm determinant for small fluctuations about the classical solution. However, in this case the nonzero eigenvalues cancel between bosons and. -
b924548k 1737..1747
www.damtp.cam.ac.uk/user/lauga/papers/40.pdf26 Jul 2013: Eqn (21) is a well-posed. Fredholm integral equation of the second kind for the unknown. -
PHYSICS OF FLUIDS VOLUME 10, NUMBER 11 NOVEMBER 1998 ...
www.damtp.cam.ac.uk/user/gold/pdfs/pinching.pdf10 Apr 2011: x2 x8!21 h x!2 h x8! 2,. 6! where the vortex sheet strengthg satisfies a Fredholm integral equation of the second kindg 1 2AmŪ@ g #• 1,hx! -
Spectral computation of highly oscillatory integral equations in…
www.damtp.cam.ac.uk/user/na/NA_papers/NA2018_04.pdf2 Nov 2018: 2011), ‘The computation of the spectra of highly. oscillatory Fredholm integral operators’, J. -
The optimal elastic flagellumSaverio E. Spagnoliea� and Eric Laugab�…
www.damtp.cam.ac.uk/user/lauga/papers/36.pdf26 Jul 2013: The slenderbody theory generates a system of Fredholm integral equa-tions of the first kind which are in general susceptible tooscillatory behavior or slow convergence in their numericalsolution, particularly when the -
This isa spec ific indiv idual’s copy of the ...
www.damtp.cam.ac.uk/user/sjc1/teaching/PM/notes.pdf23 Aug 2023: This. isa. spec. ific. indiv. idual’s. copy. of. the. note. s.P. lease. do. not. copy. and/or. redis. trib. ute. Mathematical Tripos: Part III PM. Contents. 0 Perturbation Methods (16 Lectures) i. 0.1 Introduction. i. 1 Algebraic Equations 1. 1.1 -
Paper.dvi
www.damtp.cam.ac.uk/user/na/NA_papers/NA2005_06.pdf21 Sep 2005: Evenmore ambitious goal is the analysis of highly oscillatory Fredholm equationsof the second kind. -
royalsocietypublishing.org/journal/rspa ResearchCite this article:…
www.damtp.cam.ac.uk/user/mjc249/pdfs/M_function_spec.pdf23 Sep 2020: royalsocietypublishing.org/journal/rspa. ResearchCite this article: Colbrook MJ, Kisil AV. 2020 AMathieu function boundary spectral methodfor scattering by multiple variable poro-elasticplates, with applications to metamaterials andacoustics. -
doi:
www.damtp.cam.ac.uk/user/lauga/papers/65.pdf26 Jul 2013: J. Fluid Mech. (2012), vol. 700, pp. 105–147. c Cambridge University Press 2012 105doi:10.1017/jfm.2012.101. Hydrodynamics of self-propulsion near aboundary: predictions and accuracy of. far-field approximationsSaverio E. Spagnolie1,2† and Eric -
The unified transform for mixed boundary condition problems in…
www.damtp.cam.ac.uk/user/mjc249/pdfs/UT_unbounded_domains_mjc.pdf27 Apr 2019: Choosing the Green’s function that satisfies ahomogeneous Dirichlet boundary condition on the x-axis, the boundary integral equations giverise to the following Fredholm integral equation of the first kind. -
COMPUTING SPECTRA - ON THE SOLVABILITY COMPLEXITY INDEX HIERARCHYAND…
www.damtp.cam.ac.uk/user/mjc249/pdfs/SolvabilityMJC.pdf15 Jun 2020: COMPUTING SPECTRA - ON THE SOLVABILITY COMPLEXITY INDEX HIERARCHYAND TOWERS OF ALGORITHMS. J. BEN-ARTZI, M. J. COLBROOK, A. C. HANSEN, O. NEVANLINNA, AND M. SEIDEL. 1. INTRODUCTION. This paper resolves the long-standing computational spectral problem -
doi:10.1016/j.physrep.2003.08.001
www.damtp.cam.ac.uk/user/gold/pdfs/teaching/vansaarloos.pdf31 Oct 2012: Available online at www.sciencedirect.com. Physics Reports 386 (2003) 29 – 222www.elsevier.com/locate/physrep. Front propagation into unstable states. Wim van Saarloos. Instituut-Lorentz, Universiteit Leiden, Postbus 9506, 2300 RA Leiden, The -
corpo.dvi
www.damtp.cam.ac.uk/user/astro/gd232/research/thesis/gdz_phd_thesis.pdf26 Jan 2011: We therefore have a system of Fredholm integrals of the first species to be inverted,.
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