Alex H. Barnett

Publication Activity (10 Years)

Years Active: 2008-2024
Publications (10 Years): 32

Top Topics

Zernike Moments

Integral Equation

Top Venues

J. Comput. Phys.

SIAM J. Sci. Comput.

SIAM J. Numer. Anal.

Publications

Fruzsina Julia Agocs, Alex H. Barnett
An Adaptive Spectral Method for Oscillatory Second-Order Linear ODEs with Frequency-Independent Cost. SIAM J. Numer. Anal. 62 (1) (2024)
Heather Wilber, Ethan N. Epperly, Alex H. Barnett
A superfast direct inversion method for the nonuniform discrete Fourier transform. CoRR (2024)
Anna Broms, Alex H. Barnett, Anna-Karin Tornberg
Accurate close interactions of Stokes spheres using lubrication-adapted image systems. CoRR (2024)
Fruzsina Julia Agocs, Alex H. Barnett
Trapped acoustic waves and raindrops: high-order accurate integral equation method for localized excitation of a periodic staircase. CoRR (2023)
Fruzsina Julia Agocs, Alex H. Barnett
riccati: an adaptive, spectral solver for oscillatory ODEs. J. Open Source Softw. 8 (87) (2023)
Alex H. Barnett, Philip Greengard, Manas Rachh
Uniform approximation of common Gaussian process kernels using equispaced Fourier grids. CoRR (2023)
Fruzsina J. Agocs, Alex H. Barnett
An adaptive spectral method for oscillatory second-order linear ODEs with frequency-independent cost. CoRR (2022)
Philip Greengard, Manas Rachh, Alex H. Barnett
Equispaced Fourier representations for efficient Gaussian process regression from a billion data points. CoRR (2022)
Jason Kaye, Sophie Beck, Alex H. Barnett, Lorenzo Van Muñoz, Olivier Parcollet
Automatic, high-order, and adaptive algorithms for Brillouin zone integration. CoRR (2022)
Alex H. Barnett
How Exponentially Ill-Conditioned Are Contiguous Submatrices of the Fourier Matrix? SIAM Rev. 64 (1) (2022)
Jason Kaye, Alex H. Barnett, Leslie Greengard, Umberto De Giovannini, Angel Rubio
Eliminating artificial boundary conditions in time-dependent density functional theory using Fourier contour deformation. CoRR (2022)
David B. Stein, Alex H. Barnett
Quadrature by fundamental solutions: kernel-independent layer potential evaluation for large collections of simple objects. Adv. Comput. Math. 48 (5) (2022)
Jun Wang, Ehssan Nazockdast, Alex H. Barnett
An integral equation method for the simulation of doubly-periodic suspensions of rigid bodies in a shearing viscous flow. J. Comput. Phys. 424 (2021)
David B. Stein, Alex H. Barnett
Quadrature by fundamental solutions: kernel-independent layer potential evaluation for large collections of simple objects. CoRR (2021)
David A. Barmherzig, Alex H. Barnett, Charles L. Epstein, Leslie F. Greengard, Jeremy F. Magland, Manas Rachh
Recovering Missing Data in Coherent Diffraction Imaging. SIAM J. Imaging Sci. 14 (2) (2021)
Yu-Hsuan Shih, Garrett Wright, Joakim Andén, Johannes Blaschke, Alex H. Barnett
cuFINUFFT: a load-balanced GPU library for general-purpose nonuniform FFTs. IPDPS Workshops (2021)
Yu-Hsuan Shih, Garrett Wright, Joakim Andén, Johannes Blaschke, Alex H. Barnett
cuFINUFFT: a load-balanced GPU library for general-purpose nonuniform FFTs. CoRR (2021)
Alex H. Barnett, Leslie Greengard, Thomas M. Hagstrom
High-order discretization of a stable time-domain integral equation for 3D acoustic scattering. J. Comput. Phys. 402 (2020)
Bowei Wu, Hai Zhu, Alex H. Barnett, Shravan Veerapaneni
Solution of Stokes flow in complex nonsmooth 2D geometries via a linear-scaling high-order adaptive integral equation scheme. J. Comput. Phys. 410 (2020)
David Barmherzig, Alex H. Barnett, Charles L. Epstein, Leslie Greengard, Jeremy F. Magland, Manas Rachh
Recovering missing data in coherent diffraction imaging. CoRR (2020)
Alex H. Barnett
Efficient high-order accurate Fresnel diffraction via areal quadrature and the nonuniform FFT. CoRR (2020)
Jason Kaye, Alex H. Barnett, Leslie Greengard
A high-order integral equation-based solver for the time-dependent Schrodinger equation. CoRR (2020)
Alex H. Barnett
)) kernel in the nonuniform fast Fourier transform. CoRR (2020)
Alex H. Barnett
How exponentially ill-conditioned are contiguous submatrices of the Fourier matrix? CoRR (2020)
Ludvig af Klinteberg, Alex H. Barnett
Accurate quadrature of nearly singular line integrals in two and three dimensions by singularity swapping. CoRR (2019)
Jun Wang, Ehssan Nazockdast, Alex H. Barnett
An integral equation method for the simulation of doubly-periodic suspensions of rigid bodies in a shearing viscous flow. CoRR (2019)
Bowei Wu, Hai Zhu, Alex H. Barnett, Shravan Veerapaneni
Solution of Stokes flow in complex nonsmooth 2D geometries via a linear-scaling high-order adaptive integral equation scheme. CoRR (2019)
Alex H. Barnett, Jeremy F. Magland, Ludvig af Klinteberg
A Parallel Nonuniform Fast Fourier Transform Library Based on an "Exponential of Semicircle" Kernel. SIAM J. Sci. Comput. 41 (5) (2019)
Alex H. Barnett, Jeremy F. Magland, Ludvig af Klinteberg
A parallel non-uniform fast Fourier transform library based on an "exponential of semicircle" kernel. CoRR (2018)
Alex H. Barnett, Leslie Greengard, Andras Pataki, Marina Spivak
Rapid Solution of the Cryo-EM Reconstruction Problem by Frequency Marching. SIAM J. Imaging Sci. 10 (3) (2017)
Gary R. Marple, Alex H. Barnett, Adrianna Gillman, Shravan Veerapaneni
A Fast Algorithm for Simulating Multiphase Flows Through Periodic Geometries of Arbitrary Shape. SIAM J. Sci. Comput. 38 (5) (2016)
Yuxiang Liu, Alex H. Barnett
Efficient numerical solution of acoustic scattering from doubly-periodic arrays of axisymmetric objects. J. Comput. Phys. 324 (2016)
Jun Lai, Motoki Kobayashi, Alex H. Barnett
A fast and robust solver for the scattering from a layered periodic structure containing multi-particle inclusions. J. Comput. Phys. 298 (2015)
Alex H. Barnett, Jeremy F. Magland, Leslie Greengard
Validation of neural spike sorting algorithms without ground-truth information. CoRR (2015)
Alex H. Barnett, Bowei Wu, Shravan Veerapaneni
Spectrally Accurate Quadratures for Evaluation of Layer Potentials Close to the Boundary for the 2D Stokes and Laplace Equations. SIAM J. Sci. Comput. 37 (4) (2015)
Alex H. Barnett, Bradley J. Nelson, J. Matthew Mahoney
High-order boundary integral equation solution of high frequency wave scattering from obstacles in an unbounded linearly stratified medium. J. Comput. Phys. 297 (2015)
Lin Zhao, Alex H. Barnett
Robust and Efficient Solution of the Drum Problem via Nyström Approximation of the Fredholm Determinant. SIAM J. Numer. Anal. 53 (4) (2015)
Sijia Hao, Alex H. Barnett, Per-Gunnar Martinsson, P. Young
High-order accurate methods for Nyström discretization of integral equations on smooth curves in the plane. Adv. Comput. Math. 40 (1) (2014)
Alex H. Barnett
Evaluation of Layer Potentials Close to the Boundary for Laplace and Helmholtz Problems on Analytic Planar Domains. SIAM J. Sci. Comput. 36 (2) (2014)
Adrianna Gillman, Alex H. Barnett
A fast direct solver for quasi-periodic scattering problems. J. Comput. Phys. 248 (2013)
Alex H. Barnett, Andrew Hassell
Boundary Quasi-Orthogonality and Sharp Inclusion Bounds for Large Dirichlet Eigenvalues. SIAM J. Numer. Anal. 49 (3) (2011)
Alex H. Barnett, Timo Betcke
An Exponentially Convergent Nonpolynomial Finite Element Method for Time-Harmonic Scattering from Polygons. SIAM J. Sci. Comput. 32 (3) (2010)
Alex H. Barnett
Perturbative Analysis of the Method of Particular Solutions for Improved Inclusion of High-Lying Dirichlet Eigenvalues. SIAM J. Numer. Anal. 47 (3) (2009)
Alex H. Barnett, Timo Betcke
Stability and convergence of the method of fundamental solutions for Helmholtz problems on analytic domains. J. Comput. Phys. 227 (14) (2008)