Ivan G. Graham

Orcid: 0000-0002-5730-676X

Affiliations:
  • University of Bath, UK


According to our database1, Ivan G. Graham authored at least 46 papers between 1992 and 2024.

Collaborative distances:
  • Dijkstra number2 of four.
  • Erdős number3 of four.

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Bibliography

2024
Schwarz methods with PMLs for Helmholtz problems: fast convergence at high frequency.
CoRR, 2024

Schwarz preconditioner with H<sub>k</sub>-GenEO coarse space for the indefinite Helmholtz problem.
CoRR, 2024

Convergence of overlapping domain decomposition methods with PML transmission conditions applied to nontrapping Helmholtz problems.
CoRR, 2024

Improvements to the theoretical estimates of the Schwarz preconditioner with Δ-GenEO coarse space for the indefinite Helmholtz problem.
CoRR, 2024

2023
Optimisation of seismic imaging via bilevel learning.
CoRR, 2023

2022
Convergence of restricted additive Schwarz with impedance transmission conditions for discretised Helmholtz problems.
Math. Comput., September, 2022

Convergence of parallel overlapping domain decomposition methods for the Helmholtz equation.
Numerische Mathematik, 2022

A Filon-Clenshaw-Curtis-Smolyak rule for multi-dimensional oscillatory integrals with application to a UQ problem for the Helmholtz equation.
CoRR, 2022

2021
Multigrid preconditioners for the hybridised discontinuous Galerkin discretisation of the shallow water equations.
J. Comput. Phys., 2021

Overlapping Schwarz methods with GenEO coarse spaces for indefinite and non-self-adjoint problems.
CoRR, 2021

GenEO coarse spaces for heterogeneous indefinite elliptic problems.
CoRR, 2021

A variational interpretation of Restricted Additive Schwarz with impedance transmission condition for the Helmholtz problem.
CoRR, 2021

Analysis of a Helmholtz preconditioning problem motivated by uncertainty quantification.
Adv. Comput. Math., 2021

2020
Domain Decomposition with Local Impedance Conditions for the Helmholtz Equation with Absorption.
SIAM J. Numer. Anal., 2020

Unified Analysis of Periodization-Based Sampling Methods for Matérn Covariances.
SIAM J. Numer. Anal., 2020

Stability and finite element error analysis for the Helmholtz equation with variable coefficients.
Math. Comput., 2020

Multigrid preconditioners for the hybridized Discontinuous Galerkin discretisation of the shallow water equations.
CoRR, 2020

Domain decomposition preconditioners for high-order discretisations of the heterogeneous Helmholtz equation.
CoRR, 2020

2019
Analysis of quasi-Monte Carlo methods for elliptic eigenvalue problems with stochastic coefficients.
Numerische Mathematik, 2019

Domain decomposition preconditioning for the high-frequency time-harmonic Maxwell equations with absorption.
Math. Comput., 2019

2018
Analysis of Circulant Embedding Methods for Sampling Stationary Random Fields.
SIAM J. Numer. Anal., 2018

Circulant embedding with QMC: analysis for elliptic PDE with lognormal coefficients.
Numerische Mathematik, 2018

2017
Domain decomposition preconditioning for high-frequency Helmholtz problems with absorption.
Math. Comput., 2017

2015
Quasi-Monte Carlo finite element methods for elliptic PDEs with lognormal random coefficients.
Numerische Mathematik, 2015

Applying GMRES to the Helmholtz equation with shifted Laplacian preconditioning: what is the largest shift for which wavenumber-independent convergence is guaranteed?
Numerische Mathematik, 2015

2013
Filon-Clenshaw-Curtis Rules for Highly Oscillatory Integrals with Algebraic Singularities and Stationary Points.
SIAM J. Numer. Anal., 2013

2012
Adaptive finite element methods for computing band gaps in photonic crystals.
Numerische Mathematik, 2012

Numerical-asymptotic boundary integral methods in high-frequency acoustic scattering.
Acta Numer., 2012

2011
Iterative Methods for Neutron Transport Eigenvalue Problems.
SIAM J. Sci. Comput., 2011

Quasi-Monte Carlo methods for elliptic PDEs with random coefficients and applications.
J. Comput. Phys., 2011

2010
A new multiscale finite element method for high-contrast elliptic interface problems.
Math. Comput., 2010

2009
A Convergent Adaptive Method for Elliptic Eigenvalue Problems.
SIAM J. Numer. Anal., 2009

Energy-minimizing coarse spaces for two-level Schwarz methods for multiscale PDEs.
Numer. Linear Algebra Appl., 2009

2007
Optimal Panel-Clustering in the Presence of Anisotropic Mesh Refinement.
SIAM J. Numer. Anal., 2007

Domain decomposition for multiscale PDEs.
Numerische Mathematik, 2007

A hybrid numerical-asymptotic boundary integral method for high-frequency acoustic scattering.
Numerische Mathematik, 2007

2006
Anisotropic Mesh Refinement: The Conditioning of Galerkin Boundary Element Matrices and Simple Preconditioners.
SIAM J. Numer. Anal., 2006

2005
The Computation of Conical Diffraction Coefficients in High-Frequency Acoustic Wave Scattering.
SIAM J. Numer. Anal., 2005

2004
Inverse inequalities on non-quasi-uniform meshes and application to the mortar element method.
Math. Comput., 2004

2003
Parallel iterative methods for Navier-Stokes equations and application to eigenvalue computation.
Concurr. Comput. Pract. Exp., 2003

2002
Fully discrete spectral boundary integral methods for Helmholtz problems on smooth closed surfaces in ℝ<sup>3</sup>.
Numerische Mathematik, 2002

Parallel Iterative Methods for Navier-Stokes Equations and Application to Stability Assessment (Distinguished Paper).
Proceedings of the Euro-Par 2002, 2002

2000
Hybrid Galerkin boundary elements: theory and implementation.
Numerische Mathematik, 2000

Discrete boundary element methods on general meshes in 3D.
Numerische Mathematik, 2000

1996
Massively Parallel Methods for Semiconductor Device Modelling.
Computing, 1996

1992
Iterative Solution of Linear Systems Arising from the Boundary Integral Method.
SIAM J. Sci. Comput., 1992


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