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Charles R. Johnson

Charles R. Johnson

D-Index & Metrics

Mathematics

D-Index
46
Citations
35464
World Ranking
1305
National Ranking
578

Overview

Charles R. Johnson is affiliated with William & Mary in the United States. Their research spans the fields of Computer Science and Mathematics, with a focus on Computational Theory and Mathematics as well as Geometry and Topology. Their academic output includes numerous publications across these areas, reflecting extensive involvement in both theoretical and applied domains.

The scientist's main research topics include:

  • Matrix Theory and Algorithms
  • Graph theory and applications
  • Graph theory and CDMA systems
  • Multi-Criteria Decision Making
  • Advanced Topics in Algebra
  • Mathematics and Applications
  • Decision-Making and Behavioral Economics

Charles R. Johnson has collaborated frequently with several co-authors, such as Susana Furtado, Ronald L. Smith, Michael J. Tsatsomeros, Gary Charness, and Kenji Toyonaga.

Their recent papers include:

  • Efficient vectors in priority setting methodology, 2024, Annals of Operations Research
  • Efficiency of any weighted geometric mean of the columns of a reciprocal matrix, 2023, Linear Algebra and its Applications
  • The inverse eigenvalue problem for linear trees, 2021, Discrete Mathematics
  • The next generation of experimental research with LLMs, 2025, Nature Human Behaviour
  • Impact of COVID-19 on the Mode of Presentation and Stage at Diagnosis of Colorectal Cancer, 2022, Cureus

Charles R. Johnson's frequent publication venues include:

  • arXiv (Cornell University), 19 publications
  • Linear Algebra and its Applications, 12 publications
  • SSRN Electronic Journal, 12 publications
  • Linear and Multilinear Algebra, 7 publications
  • Special Matrices, 5 publications

Among their scholarly contributions is a book titled Matrix Positivity, published in 2020 by Cambridge University Press.

Best Publications

  • Matrix analysis: Frontmatter

    Roger A. Horn;Charles R. Johnson

  • Positive definite completions of partial Hermitian matrices

    Robert Grone;Charles R. Johnson;Eduardo M. Sá;Henry Wolkowicz

  • Row Stochastic Matrices Similar to Doubly Stochastic Matrices

    Charles R. Johnson

  • The maximum multiplicity of an eigenvalue in a matrix whose graph is a tree

    C.R. Johnson;António Leal Duarte

  • A Gersgorin-type lower bound for the smallest singular value

    Charles R. Johnson

  • NUMERICAL DETERMINATION OF THE FIELD OF VALUES OF A GENERAL COMPLEX MATRIX

    Unknown

  • The Linear Algebra Curriculum Study Group Recommendations for the First Course in Linear Algebra

    David Carlson;Charles R. Johnson;David C. Lay;A. Duane Porter

  • The Parter-Wiener Theorem: Refinement and Generalization

    Charles R. Johnson;António Leal Duarte;Carlos M. Saiago

  • The real and the symmetric nonnegative inverse eigenvalue problems are different

    Charles Johnson;Thomas Laffey;Raphael Loewy

  • Norms for vectors and matrices

    Roger A. Horn;Charles R. Johnson

  • Ranks of Completions of Partial Matrices

    Nir Cohen;Charles R. Johnson;Leiba Rodman;Hugo J. Woerdeman

  • Completely positive matrices associated with M-matrices

    John H Drew;Charles R. Johnson;Raphael Loewy

  • The Euclidian Distance Matrix Completion Problem

    Mihaly Bakonyi;Charles R. Johnson

  • The perron root of a weighted geometric mean of nonneagative matrices

    Ludwig Elsner;Charles R. Johnson;J. A. Dias Da Silva

  • ON THE MINIMUM NUMBER OF DISTINCT EIGENVALUES FOR A SYMMETRIC MATRIX WHOSE GRAPH IS A GIVEN TREE

    Onio Leal-Duarte;Charles R. Johnson

  • On Matrices with Perron–Frobenius Properties and Some Negative Entries

    Charles R. Johnson;Pablo Tarazaga

  • The singular values of a Hadamard product : a basic inequality

    T. Ando;Roger A. Horn;Charles R. Johnson

  • On the Minimum Rank Among Positive Semidefinite Matrices with a Given Graph

    Matthew Booth;Philip Hackney;Benjamin Harris;Charles R. Johnson

  • Sub-direct sums and positivity classes of matrices

    Shaun M. Fallat;Charles R. Johnson

  • Determinantal formulae for matrix completions associated with chordal graphs

    Wayne W. Barrett;Charles R. Johnson;Michael Lundquist;Michael Lundquist

  • The Real Positive Definite Completion Problem: Cycle Completability

    Wayne W. Barrett;Charles R. Johnson;Raphael Loewy

  • Further lower bounds for the smallest singular value

    Charles R. Johnson;Tomasz Szulc

Frequent Co-Authors

Roger A. Horn
Roger A. Horn University of Utah
P. van den Driessche
P. van den Driessche University of Victoria
Shaun M. Fallat
Shaun M. Fallat University of Regina
Henry Wolkowicz
Henry Wolkowicz University of Waterloo
Chi-Kwong Li
Chi-Kwong Li William & Mary
Miroslav Fiedler
Miroslav Fiedler Czech Academy of Sciences
Michael Neumann
Michael Neumann University of Connecticut
Juan Manuel Peña
Juan Manuel Peña University of Zaragoza
Leslie Hogben
Leslie Hogben Iowa State University
William K. Kaufmann
William K. Kaufmann AsystBio (United States)

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