Hiroshi Nakazato

Hiroshi Nakazato

Hirosaki University

H-index: 16

Asia-Japan

About Hiroshi Nakazato

Hiroshi Nakazato, With an exceptional h-index of 16 and a recent h-index of 8 (since 2020), a distinguished researcher at Hirosaki University, specializes in the field of numerical range.

His recent articles reflect a diverse array of research interests and contributions to the field:

The numerical range of periodic banded Toeplitz operators

Joint numerical range with degenerate boundary generating variety

Elliptic modular invariants of 4-by-4 matrices

Numerical ranges of cyclic shift matrices

Theta divisor and Abel map for 4-by-4 matrices

Computing real definite representations of Helton–Vinnikov theorem

The numerical range of a periodic tridiagonal operator reduces to the numerical range of a finite matrix

Inverse numerical range and Abel-Jacobi map of Hermitian determinantal representation

Hiroshi Nakazato Information

University

Position

___

Citations(all)

864

Citations(since 2020)

236

Cited By

723

hIndex(all)

16

hIndex(since 2020)

8

i10Index(all)

32

i10Index(since 2020)

4

Email

University Profile Page

Hirosaki University

Google Scholar

View Google Scholar Profile

Hiroshi Nakazato Skills & Research Interests

numerical range

Top articles of Hiroshi Nakazato

Title

Journal

Author(s)

Publication Date

The numerical range of periodic banded Toeplitz operators

Advances in Operator Theory

Benjamín A Itzá-Ortiz

Rubén A Martínez-Avendaño

Hiroshi Nakazato

2024/1

Joint numerical range with degenerate boundary generating variety

Advances in Operator Theory

Mao-Ting Chien

Hiroshi Nakazato

2023/10

Elliptic modular invariants of 4-by-4 matrices

Linear Algebra and its Applications

Mao-Ting Chien

Hiroshi Nakazato

2023/4/1

Numerical ranges of cyclic shift matrices

Linear Algebra and its Applications

Mao-Ting Chien

Steve Kirkland

Chi-Kwong Li

Hiroshi Nakazato

2023/12/1

Theta divisor and Abel map for 4-by-4 matrices

Linear Algebra and its Applications

Mao-Ting Chien

Hiroshi Nakazato

2023/11/1

Computing real definite representations of Helton–Vinnikov theorem

Banach Journal of Mathematical Analysis

Mao-Ting Chien

Hiroshi Nakazato

2022/4

The numerical range of a periodic tridiagonal operator reduces to the numerical range of a finite matrix

Journal of Mathematical Analysis and Applications

Benjamín A Itzá-Ortiz

Rubén A Martínez-Avendaño

Hiroshi Nakazato

2022/2/15

Inverse numerical range and Abel-Jacobi map of Hermitian determinantal representation

Linear Algebra and its Applications

Mao-Ting Chien

Hiroshi Nakazato

2022/1/15

The numerical range of some periodic tridiagonal operators is the convex hull of the numerical ranges of two finite matrices

Linear and multilinear algebra

Benjamín A Itzá-Ortiz

Rubén A Martínez-Avendaño

Hiroshi Nakazato

2021/11/18

Abel theorem and inverse numerical range

Linear Algebra and its Applications

Mao-Ting Chien

Hiroshi Nakazato

2021/10/1

The diameter and width of higher rank numerical ranges

Linear and Multilinear Algebra

Mao-Ting Chien

Chi-Kwong Li

Hiroshi Nakazato

2021/4/4

Computation of Riemann matrices of hyperbolic quartic curves

Linear and Multilinear Algebra

MT Chien

H Nakazato

2021/4/4

Unitary similarity of a weighted shift matrix to a symmetric matrix

Linear Algebra and its Applications

Mao-Ting Chien

Hiroshi Nakazato

2021/2/15

Inverse Numerical Range and Determinantal Quartic Curves

Mathematics

Mao-Ting Chien

Hiroshi Nakazato

2020/11/26

Symmetry of cyclic weighted shift matrices with pivot-reversible weights

The Electronic Journal of Linear Algebra

Mao-Ting Chien

Hiroshi Nakazato

2020/1/20

Generating curves of the inverse q-numerical ranges of 2-by-2 matrices

Archiv der Mathematik

Mao-Ting Chien

Hiroshi Nakazato

Mohammad Sal Moslehian

Ali Zamani

2020/12

See List of Professors in Hiroshi Nakazato University(Hirosaki University)