K. Ikramov

发表

On the calculation of neutral subspaces of a matrix

K. Ikramov, 2017 .

Matrix pencils: Theory, applications, and numerical methods

K. Ikramov, 1993 .

The Minimal and Characteristic Polyanalytic Polynomials of a Normal Matrix

K. Ikramov, 2018, Journal of Mathematical Sciences.

Computing matrix–vector products with centrosymmetric and centrohermitian matrices

Heike Fassbender, H. Faßbender, K. Ikramov, 2003 .

Rationally Verifiable Necessary Conditions for Hermitian Congruence of Complex Matrices

K. Ikramov, 2020 .

Neutral Subspaces of Complex Matrices

K. Ikramov, 2016 .

On a Finite Algorithm for Computing Neutral Subspaces of Skew-Symmetric Matrices

K. Ikramov, 2019, Journal of Mathematical Sciences.

The CMV Matrix and the Generalized Lanczos Process

K. Ikramov, 2018, Journal of Mathematical Sciences.

On Nonnormal Matrices That Can Be Reduced to Band Form under Nite Sequences of Elementary Unitary Similarities

L. Elsner, K. Ikramov, 1996 .

Duality relations associated with Gaussian elimination

K. Ikramov, 1983 .

Sparse linear problems of the least squares method

K. Ikramov, 1987 .

On complex Benzi-Golub matrices

K. Ikramov, 2009 .

Equality conditions for the singular values of 3 × 3 matrices with one-point spectrum

K. Ikramov, 2006 .

On the 2-norm distance from a normal matrix to the set of matrices with a multiple zero eigenvalue

K. Ikramov, A. Nazari, 2006 .

Justification of a Malyshev-Type Formula in the Nonnormal Case

K. Ikramov, A. Nazari, 2005 .

Normal Matrices and an Extension of Malyshev's Formula

K. Ikramov, A. Nazari, 2004 .

On the Distance to the Closest Matrix with Triple Zero Eigenvalue

K. Ikramov, A. Nazari, 2003 .

Singular numbers and polar factorization of an operator in a bilinear metric space

K. Ikramov, 1989 .

Some observations on the Youla form and conjugate-normal matrices

H. Faßbender, K. Ikramov, 2007 .

Simultaneous decomplexification of a pair of complex matrices by a unitary congruence transformation

K. Ikramov, 2011 .

An economical algorithm for calculating the coneigenvalues of complex matrices that are self-adjoint with respect to the symplectic metric

K. Ikramov, 2013 .

Undecomposable Hamiltonian matrices with pure imaginary spectrum

K. Ikramov, 1990 .

Canonical Angles of Normal Matrices and Theorems of the Wielandt–Hoffman and J.-g. Sun Type

K. Ikramov, 2022, Computational Mathematics and Mathematical Physics.

An algebraic proof of a result by Gonzagaand Lara

K. Ikramov, 1999 .

A canonical form for projectors under unitary similarity

K. Ikramov, 1996 .

A Rational Criterion for Congruence of Square Matrices

K. Ikramov, 2019, Journal of Mathematical Sciences.

How to Check Whether Given Square Matrices are Congruent

K. Ikramov, 2016, Journal of Mathematical Sciences.

Isolation of the Regular Part of a Singular Matrix Pencil as a Rational Algorithm

K. Ikramov, 2016, Journal of Mathematical Sciences.

Normality conditions for the matrix operator X→AX+X∗B\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$X \rightarrow AX

K. Ikramov, 2014, Calcolo.

Unitary automorphisms of the space of Hankel matrices

K. Ikramov, 2014 .

An inclusion theorem for eigenvalues of tridiagonal matrices

K. Ikramov, 1971 .

Calculating the Isotropic Subspace of a Symmetric Quasi-Definite Matrix

K. Ikramov, 2018, Moscow University Computational Mathematics and Cybernetics.

On the multiplication of scalar and matrix power series with integer coefficients

K. Ikramov, A. Buslenko, 2008 .

An Unusual Criterion for Normality of Nonsingular Matrices

K. Ikramov, 2022, Moscow University Computational Mathematics and Cybernetics.

On the Congruence Centralizers of a Block Diagonal Matrix and the Horn–Sergeichuk Matrix

K. Ikramov, 2022, Computational Mathematics and Mathematical Physics.

On Matrices Whose Cosquares are Diagonalizable and Have Real Spectra

K. Ikramov, 2022, Numerical Analysis and Applications.

On the Set of Matrices Having Jn(1) as the Cosquare

K. Ikramov, 2021, Computational Mathematics and Mathematical Physics.

Spectral Peculiarities of Products of Special Matrices

K. Ikramov, 2021, Moscow University Computational Mathematics and Cybernetics.

A Criterion of the Congruence of Nonsingular Matrices from the Group-Theoretic Viewpoint

K. Ikramov, 2021, Moscow University Computational Mathematics and Cybernetics.

An Algorithm Verifying the Congruence of Complex Matrices Whose Cosquares Have Eigenvalues of Modulus One

V. A. Usov, K. Ikramov, 2020, Moscow University Computational Mathematics and Cybernetics.

On the Toeplitz and Polar Decompositions of an Involutive Matrix

K. Ikramov, 2020, Moscow University Computational Mathematics and Cybernetics.

On the Parameters of the Singular Part of the Horn—Sergeichuk Regularizing Decomposition

K. Ikramov, 2018, Doklady Mathematics.

On the calculation of neutral subspaces of a matrix

K. Ikramov, 2017, Moscow University Computational Mathematics and Cybernetics.

On complex matrices that are unitarily similar to real matrices

K. Ikramov, 2010 .

Inverse matrix eigenvalue problems

K. Ikramov, V. Chugunov, 2000 .

On the product of two skew-Hamiltonian or two skew-symmetric matrices

H. Faßbender, K. Ikramov, 2009 .

On the growth factor in Gaussian elimination for generalized Higham matrices

Alan George, Khakim D. Ikramov, Andrey B. Kucherov, 2002, Numer. Linear Algebra Appl..

Conditionality of the intermediate matrices of the Gauss, Jordan and optimal elimination methods

K. Ikramov, Kh.D. Ikramov, 1978 .

A Finite Procedure for the Tridiagonalization of a General Matrix

Alan George, Khakim D. Ikramov, W.-P. Tang, 1995, SIAM J. Matrix Anal. Appl..

Conditionally definite matrices

Kh. D. Ikramov, N. V. Savel'eva, K. Ikramov, 2000 .

A simple proof of the generalized Schur inequality

K. Ikramov, 1994 .

Extremal properties of some matrix norms

K. Ikramov, N. V. Petri, 1968 .

On a Remarkable Property of a Matrix of Mark Kac

K. Ikramov, 2002 .

From symplectic eigenvalues of positive definite matrices to their pseudo-orthogonal eigenvalues

K. Ikramov, A. Nazari, 2022, Computational Mathematics and Computer Modeling with Applications (CMCMA).

Square Roots of Hermitian Matrices and a Rational Algorithm for Checking Their Congruence

K. Ikramov, 2019, Moscow University Computational Mathematics and Cybernetics.

The Congruent Centralizer of a Block Diagonal Matrix

K. Ikramov, 2017 .

Checking the congruence between accretive matrices

K. Ikramov, 2017 .

Non-Hermitian matrices of even order and neutral subspaces of half the dimension

K. Ikramov, 2016 .

An analysis of the matrix equation AX + X̄B = C

K. Ikramov, 2016 .

Normality conditions for semilinear matrix operators of the Stein type

K. Ikramov, 2015 .

Normality conditions for linear matrix operators of the Stein type

K. Ikramov, 2015 .

Normality conditions for the BHH matrix operator

K. Ikramov, 2015 .

Numerical algorithm for solving quadratic matrix equations of a certain class

K. Ikramov, Yu. O. Vorontsov, 2014 .

On the solvability of a certain class of quadratic matrix equations

K. Ikramov, 2014 .

Unitary congruence to a conjugate-normal matrix

K. Ikramov, 2013 .

Numerical solution of the matrix equations AX + XTB=C and X + AXTB=C with rectangular coefficients A and B

K. Ikramov, Yu. O. Vorontsov, 2013 .

A continuation method for solving symmetric Toeplitz systems

Kh. D. Ikramov, M. Barel, K. Ikramov, 2008 .

Binormal Matrices

K. Ikramov, 2018, Journal of Mathematical Sciences.

Binormal Matrices

K. Ikramov, 2018, Journal of Mathematical Sciences.

Gaussian elimination is stable for the inverse of a diagonally dominant matrix

Alan George, Khakim D. Ikramov, A. George, 2003, Math. Comput..

A Description of Pairs of Quasi-Commuting Toeplitz and Hankel Matrices

K. Ikramov, V. Chugunov, 2017, Numerical Analysis and Applications.

On the Properties of Accretive-Dissipative Matrices

Alan George, Kh. D. Ikramov, K. Ikramov, 2005 .

Matching of vector and matrix norms

K. Ikramov, N. V. Petri, 1969 .

Quadratically normal and congruence-normal matrices

H. Faßbender, K. Ikramov, 2010 .

On the matrix equation X$$ \bar X $$ = A

K. Ikramov, 2009 .

Conjugate-normal matrices: A survey

H. Faßbender, K. Ikramov, 2008 .

A note on an unusual type of polar decomposition

Heike Faßbender, H. Faßbender, K. Ikramov, 2008 .

Several observations on symplectic, Hamiltonian, and skew-Hamiltonian matrices

Heike Faßbender, Kh. D. Ikramov, H. Faßbender, 2005 .

On the growth factor in Gaussian elimination for matrices with sharp angular field of values

A. George, K. Ikramov, 2004 .

Hamiltonian square roots of skew-Hamiltonian matrices revisited

K. Ikramov, Khakim D. Ikramov, 2001 .

Conditions for unique solvability of the matrix equation AX + X*B = C

K. Ikramov, Yu. O. Vorontsov, 2012 .

Conditions for unique solvability of the matrix equation AX + XTB = C

Kh. D. Ikramov, K. Ikramov, 2010 .

Some Properties of Symmetric Quasi-Definite Matrices

Alan George, Khakim D. Ikramov, Andrey B. Kucherov, 2000, SIAM J. Matrix Anal. Appl..

Classification of real pairs of commuting Toeplitz and Hankel matrices

K. Ikramov, V. Chugunov, 2016 .

Classification of real pairs of commuting Toeplitz and Hankel matrices

K. Ikramov, V. Chugunov, 2016, Numerical Analysis and Applications.

A complete solution of the normal Hankel problem

K. Ikramov, V. Chugunov, 2010 .

Classifying normal Hankel matrices

K. Ikramov, V. Chugunov, 2009 .

A contribution to the normal Hankel problem

K. Ikramov, V. Chugunov, 2009 .

The conjugate-normal Toeplitz problem

K. Ikramov, V. Chugunov, 2009 .

On normal Hankel matrices of low orders

K. Ikramov, V. Chugunov, 2008 .

On normal Hankel matrices

K. Ikramov, V. Chugunov, 2008 .

On a new class of normal Hankel matrices

K. Ikramov, V. Chugunov, 2007 .

Erratum: Comments On Normal Toeplitz Matrices by Farenick et al

K. Ikramov, 1997, SIAM J. Matrix Anal. Appl..

Normality condition for a complex Toeplitz matrix

K. Ikramov, V. Chugunov, 1996 .

Classification of normal Toeplitz matrices with real entries

K. Ikramov, 1995 .

Describing normal Toeplitz matrices

K. Ikramov, 1994 .

The matrix equation X + AXTB = C: Conditions for unique solvability and a numerical algorithm for its solution

K. Ikramov, Khakim D. Ikramov, Yu. O. Vorontsov, 2012 .