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Ragnar Winther

Ragnar Winther

D-Index & Metrics

Mathematics

D-Index
41
Citations
8998
World Ranking
1878
National Ranking
12

Research.com Recognitions

  • 2013 - Fellow of the American Mathematical Society

Overview

Ragnar Winther is affiliated with the University of Oslo in Norway and has contributed extensively to the fields of engineering and mathematics. Their research primarily focuses on computational mechanics, computational theory and mathematics, and geometry and topology.

The scientist's work spans several main topics, including:

  • Advanced Numerical Methods in Computational Mathematics
  • Advanced Numerical Analysis Techniques
  • Elasticity and Material Modeling
  • Algebraic Geometry and Number Theory
  • Nonlinear Waves and Solitons
  • Mathematical Analysis and Transform Methods
  • Matrix Theory and Algorithms

Winther's recent publications have appeared in a variety of venues, reflecting a broad engagement with computational and mathematical research areas. These venues include:

  • arXiv (Cornell University)
  • Foundations of Computational Mathematics
  • SIAM Journal on Numerical Analysis
  • Journal of Computational Mathematics
  • Mathematics of Computation

Selected recent papers authored or co-authored by Winther include:

  • The Bubble Transform and the de Rham Complex, 2022, published in Foundations of Computational Mathematics
  • A Uniform Preconditioner for a Newton Algorithm for Total Variation Minimization and Minimum-Surface Problems, 2023, published in SIAM Journal on Numerical Analysis
  • Well-Conditioned Frames for High Order Finite Element Methods, 2021, published in Journal of Computational Mathematics
  • Construction of polynomial preserving cochain extensions by blending, 2022, published on arXiv (Cornell University)
  • The Bubble Transform and the de Rham Complex, 2021, published on arXiv (Cornell University)

Frequent collaborators in Winther's research include:

  • Richard S. Falk
  • Xue-Cheng Tai
  • Weiying Zheng
  • Xiaodi Zhang
  • Kaibo Hu

Winther has been recognized by peers through election as a Fellow of the American Mathematical Society, an honor received in 2013. This accolade identifies contributions to the mathematical sciences community.

Best Publications

  • Finite element exterior calculus, homological techniques, and applications

    Douglas N. Arnold;Richard S. Falk;Ragnar Winther

  • Finite element exterior calculus: From hodge theory to numerical stability

    Douglas N. Arnold;Richard S. Falk;Ragnar Winther

  • Multigrid in H(div) and H(curl)

    Douglas N. Arnold;Richard S. Falk;Ragnar Winther

  • Mixed finite elements for elasticity

    Douglas N. Arnold;Ragnar Winther

  • A preconditioned iterative method for saddlepoint problems

    Torgeir Rusten;Ragnar Winther

  • Mixed finite element methods for linear elasticity with weakly imposed symmetry

    Douglas N. Arnold;Richard S. Falk;Ragnar Winther

  • Preconditioning discretizations of systems of partial differential equations

    Kent-Andre Mardal;Ragnar Winther

  • Introduction to Partial Differential Equations: A Computational Approach

    Aslak Tveito;Ragnar Winther

  • Preconditioning in H (div) and applications

    Douglas N. Arnold;Richard S. Falk;R. Winther

  • A Robust Finite Element Method for Darcy--Stokes Flow

    Kent Andre Mardal;Xue-Cheng Tai;Ragnar Winther

  • Finite elements for symmetric tensors in three dimensions

    Douglas N. Arnold;Gerard Awanou;Ragnar Winther

  • Numerical methods for incompressible viscous flow

    Hans Petter Langtangen;Hans Petter Langtangen;Kent-Andre Mardal;Kent-Andre Mardal;Ragnar Winther

  • The Korteweg–de Vries Equation, Posed in a Quarter-Plane

    Jerry Bona;Ragnar Winther

  • A robust nonconforming H 2 -element

    Trygve K. Nilssen;Xue-Cheng Tai;Ragnar Winther

  • NONCONFORMING MIXED ELEMENTS FOR ELASTICITY

    Douglas N. Arnold;Ragnar Winther

  • Parameter-robust discretization and preconditioning of Biot's consolidation model

    Jeonghun J. Lee;Kent-Andre Mardal;Ragnar Winther

  • Some Superlinear Convergence Results for the Conjugate Gradient Method

    Ragnar Winther

  • Unified finite element discretizations of coupled Darcy–Stokes flow

    Trygve Karper;Kent-Andre Mardal;Kent-Andre Mardal;Ragnar Winther

  • SMOOTHED PROJECTIONS IN FINITE ELEMENT EXTERIOR CALCULUS

    Snorre H. Christiansen;Ragnar Winther

  • Robust convergence of multi point flux approximation on rough grids

    Runhild A. Klausen;Ragnar Winther

  • Multigrid inH(div) andH(curl )

    Douglas N. Arnold;Richard S. Falk;Ragnar Winther

Frequent Co-Authors

Douglas N. Arnold
Douglas N. Arnold University of Minnesota
Richard S. Falk
Richard S. Falk Rutgers, The State University of New Jersey
Xue-Cheng Tai
Xue-Cheng Tai NORCE Research
Panayot S. Vassilevski
Panayot S. Vassilevski Lawrence Livermore National Laboratory
Jerry L. Bona
Jerry L. Bona University of Illinois at Chicago
Tom Lyche
Tom Lyche University of Oslo

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