World's Best Scientists 2026 revealed!

D-Index & Metrics

Mathematics

D-Index
32
Citations
84185
World Ranking
3085
National Ranking
1233

Overview

Roger A. Horn is affiliated with the University of Utah in the United States and specializes in research at the intersection of computer science and mathematics. Their work spans several main fields including computational theory and mathematics, numerical analysis, computational mathematics, and electrical and electronic engineering.

The scientist's research topics focus primarily on matrix theory and algorithms, advanced optimization algorithms, tensor decomposition and applications, graph theory and CDMA systems, and advanced algebra and logic.

Their recent publications include:

  • Rank of a Hadamard product, 2020, published in Linear Algebra and its Applications
  • Powers of Rational Matrices, 2021, published in American Mathematical Monthly
  • Is AX = Y Possible with a Positive Definite A?, 2025, published in American Mathematical Monthly

Frequent co-authors working alongside Roger A. Horn include Stephan Ramon Garcia, Zai Yang, Florian Luca, and Kuldeep Sarma.

They have contributed publications across notable venues such as:

  • American Mathematical Monthly
  • Linear Algebra and its Applications

In addition to journal articles, Roger A. Horn has authored a book titled Matrix Mathematics, published by Cambridge University Press in 2023.

Best Publications

  • Matrix Analysis

    Roger A. Horn;Charles R. Johnson

  • Matrix analysis: Frontmatter

    Roger A. Horn;Charles R. Johnson

  • Topics in Matrix Analysis

    Roger A Horn

  • Topics in matrix analysis: The Hadamard product

    Roger A. Horn;Charles R. Johnson

  • A heuristic asymptotic formula concerning the distribution of prime numbers

    Paul T. Bateman;Roger A. Horn

  • Estimating Heteroscedastic Variances in Linear Models

    Susan D. Horn;Roger A. Horn;David B. Duncan

  • Interhospital differences in severity of illness. Problems for prospective payment based on diagnosis-related groups (DRGs).

    Susan D. Horn;Gregory Bulkley;Phoebe D. Sharkey;Angela F. Chambers

  • Canonical forms for complex matrix congruence and ∗congruence

    Roger A. Horn;Vladimir V. Sergeichuk

  • Norms for vectors and matrices

    Roger A. Horn;Charles R. Johnson

  • A canonical form for matrices under consimilarity

    YooPyo Hong;Roger A. Horn

  • On fractional Hadamard powers of positive definite matrices

    Carl H FitzGerald;Roger A Horn

  • On infinitely divisible matrices, kernels, and functions

    Roger A. Horn

  • The theory of infinitely divisible matrices and kernels

    Roger A. Horn

  • Contragredient equivalence: A canonical form and some applications

    Roger A. Horn;Dennis I. Merino

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

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

  • Congruences of a square matrix and its transpose

    Roger A Horn;Vladimir V Sergeichuk

  • Basic Properties of the Schur Complement

    Roger A. Horn;Fuzhen Zhang;Fuzhen Zhang

  • Comparison of Estimators of Heteroscedastic Variances in Linear Models

    Susan D. Horn;Roger A. Horn

  • Cauchy-Schwarz inequalities associated with positive semidefinite matrices

    Roger A. Horn;Roy Mathias

  • An analog of the Cauchy-Schwarz inequality for Hadamard products and unitarily invariant norms

    Roger A. Horn;Roy Mathias

Frequent Co-Authors

Charles R. Johnson
Charles R. Johnson William & Mary
Chi-Kwong Li
Chi-Kwong Li William & Mary
Rajendra Bhatia
Rajendra Bhatia Ashoka University
Fuad Kittaneh
Fuad Kittaneh University of Jordan
Stefano Serra-Capizzano
Stefano Serra-Capizzano University of Insubria
Ingram Olkin
Ingram Olkin Stanford University

If you think any of the details on this page are incorrect, let us know.

Report an issue

We appreciate your kind effort to assist us to improve this page, it would be helpful providing us with as much detail as possible in the text box below:

Related Online Degrees & Career Pathways

For students interested in Mathematics in the USA, pursuing related online degrees can open diverse career pathways. One popular option is advancing into data science fields by enrolling in analytics masters programs. These programs often build upon mathematical foundations to develop skills in data interpretation and predictive modeling, which are in high demand across industries.

Alternatively, some professionals leverage their mathematical expertise by combining it with business acumen through an MBA. Those concerned about admission competitiveness might consider exploring mba programs easy to get into. These programs provide practical business skills without the high pressure of competitive entry.

For added flexibility, online options such as the easiest online mba programs to get into allow students to balance continued education with ongoing career commitments. These programs emphasize accessibility while maintaining quality instruction.

For those aiming at advanced leadership roles, exploring the most affordable online dba programs can be a strategic choice. These Doctor of Business Administration degrees focus on strategic management and research, offering a valuable complement to a mathematical skill set.

Best Scientists Citing Roger A. Horn

Trending Scientists

Recently Published Articles