B
Bryan Sundahl
Researcher at Stony Brook University
Publications - 7
Citations - 183
Bryan Sundahl is an academic researcher from Stony Brook University. The author has contributed to research in topics: Multiresolution analysis & Basis (linear algebra). The author has an hindex of 3, co-authored 6 publications receiving 155 citations.
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Journal ArticleDOI
MADNESS: A Multiresolution, Adaptive Numerical Environment for Scientific Simulation
Robert W. Harrison,Gregory Beylkin,Florian A. Bischoff,Justus A. Calvin,George I. Fann,Jacob Fosso-Tande,Diego Galindo,Jeff R. Hammond,Rebecca Hartman-Baker,Judith Hill,Jun Jia,Jakob S. Kottmann,M-J. Yvonne Ou,Laura E. Ratcliff,Matthew G. Reuter,Adam Richie-Halford,Nichols A. Romero,Hideo Sekino,William A. Shelton,Bryan Sundahl,W. Scott Thornton,Edward F. Valeev,Álvaro Vázquez-Mayagoitia,Nicholas Vence,Yukina Yokoi +24 more
TL;DR: The features and capabilities of MADNESS are described and some current applications in chemistry and several areas of physics are discussed.
Journal ArticleDOI
MADNESS: A Multiresolution, Adaptive Numerical Environment for Scientific Simulation
Robert W. Harrison,Gregory Beylkin,Florian A. Bischoff,Justus A. Calvin,George I. Fann,Jacob Fosso-Tande,Diego Galindo,Jeff R. Hammond,Rebecca Hartman-Baker,Judith Hill,Jun Jia,Jakob S. Kottmann,M-J. Yvonne Ou,Junchen Pei,Laura E. Ratcliff,Matthew G. Reuter,Adam Richie-Halford,Nichols A. Romero,Hideo Sekino,William A. Shelton,Bryan Sundahl,W. Scott Thornton,Edward F. Valeev,Álvaro Vázquez-Mayagoitia,Nicholas Vence,Takeshi Yanai,Yukina Yokoi +26 more
TL;DR: The MADNESS (multiresolution adaptive numerical environment for scientific simulation) as mentioned in this paper is a high-level software environment for solving integral and differential equations in many dimensions that uses adaptive and fast harmonic analysis methods with guaranteed precision that are based on multiresolution analysis and separated representations.
Journal ArticleDOI
Ligand-induced dependence of charge transfer in nanotube–quantum dot heterostructures
Lei Wang,Jinkyu Han,Bryan Sundahl,Scott Thornton,Yuqi Zhu,Ruiping Zhou,Cherno Jaye,Haiqing Liu,Zhuo-Qun Li,Gordon T. Taylor,Daniel A. Fischer,Joerg Appenzeller,Robert W. Harrison,Robert W. Harrison,Stanislaus S. Wong,Stanislaus S. Wong +15 more
TL;DR: Overall data suggest that QD coverage density on the DWNTs varies, based upon the different ligand pendant groups used, and that the presence of a π-conjugated carbon framework within the ligands themselves coupled with the electron affinity of their pendants groups collectively play important roles in the resulting charge transfer from QDs to the underlying CNTs.
Journal ArticleDOI
On derivatives of smooth functions represented in multiwavelet bases
Joel Anderson,Robert W. Harrison,Hideo Sekino,Bryan Sundahl,Gregory Beylkin,George I. Fann,Stig Rune Jensen,Irina Sagert +7 more
TL;DR: The new constructions proceed via least-squares projection onto smooth bases and provide substantially improved numerical properties as well as permitting direct construction of high-order derivative operators for smooth functions represented via discontinuous multiwavelet bases.
Journal ArticleDOI
Dirac-Fock calculations on molecules in an adaptive multiwavelet basis.
TL;DR: The approach uses an adaptive basis of multiwavelet functions to solve the full four-component Dirac-Coulomb equation to a user-specified accuracy and applicability to molecules is shown via ground state calculations of some simple molecules.