Normality conditions for the matrix operator $$X \rightarrow AX + X^{*}B$$.
- Published in:
- Calcolo, 2015, v. 52, n. 4, p. 495, doi. 10.1007/s10092-014-0126-8
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- Article
Works matching AU Ikramov, Kh.
Results: 145
1
2
SYMMLQ-like procedure for Ax = b where A is a special normal matrix.
- Published in:
- Calcolo, 2006, v. 43, n. 1, p. 17, doi. 10.1007/s10092-006-0112-x
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- Publication type:
- Article
3
Effective algorithms for decomplexifying a matrix by unitary similarities or congruences.
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- Mathematical Notes, 2012, v. 92, n. 5/6, p. 767, doi. 10.1134/S0001434612110211
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4
On unitary transposable matrices of order three.
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- Mathematical Notes, 2012, v. 91, n. 3/4, p. 528, doi. 10.1134/S0001434612030273
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- Article
5
On complex matrices that are unitarily similar to real matrices.
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- Mathematical Notes, 2010, v. 87, n. 5/6, p. 821, doi. 10.1134/S0001434610050214
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6
Quadratically normal matrices of type 1 and unitary similarities between them.
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- Mathematical Notes, 2009, v. 86, n. 3/4, p. 342, doi. 10.1134/S0001434609090065
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- Article
7
On the reduction of the normal Hankel problem to two particular cases.
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- Mathematical Notes, 2009, v. 85, n. 5/6, p. 674, doi. 10.1134/S0001434609050071
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- Article
8
On normal Hankel matrices of low orders.
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- Mathematical Notes, 2008, v. 84, n. 1-2, p. 197, doi. 10.1134/S0001434608070201
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- Article
9
Reducing complex matrices to condensed forms by unitary congruence transformations.
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- Mathematical Notes, 2007, v. 82, n. 3/4, p. 492, doi. 10.1134/S0001434607090258
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- Article
10
Equality conditions for the singular values of 3 × 3 matrices with one-point spectrum.
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- Mathematical Notes, 2006, v. 80, n. 1/2, p. 183, doi. 10.1007/s11006-006-0126-3
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- Article
11
Justification of a Malyshev-Type Formula in the Nonnormal Case.
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- Mathematical Notes, 2005, v. 78, n. 1/2, p. 219, doi. 10.1007/s11006-005-0118-8
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- Article
12
On the Properties of Accretive-Dissipative Matrices.
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- Mathematical Notes, 2005, v. 77, n. 5/6, p. 767, doi. 10.1007/s11006-005-0077-0
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- Article
13
Normal Matrices and an Extension of Malyshev's Formula.
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- Mathematical Notes, 2004, v. 75, n. 5/6, p. 608, doi. 10.1023/B:MATN.0000030968.43462.98
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- Article
14
On the Inverses of Brownian and Brownian-Like Matrices.
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- Mathematical Notes, 2004, v. 75, n. 1/2, p. 83, doi. 10.1023/B:MATN.0000015023.55603.cd
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- Article
15
On the Unitary Similarity of Matrix Families.
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- Mathematical Notes, 2003, v. 74, n. 5/6, p. 772, doi. 10.1023/B:MATN.0000009013.89673.0a
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- Article
16
On the Distance to the Closest Matrix with Triple Zero Eigenvalue.
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- Mathematical Notes, 2003, v. 73, n. 3/4, p. 511, doi. 10.1023/A:1023255104040
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- Article
17
Symplectic Eigenvalues and Singular Values of Symmetric Matrices.
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- Journal of Mathematical Sciences, 2022, v. 262, n. 1, p. 36, doi. 10.1007/s10958-022-05798-9
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- Article
18
Special Congruences of Symmetric and Hermitian Matrices and Their Invariants.
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- Journal of Mathematical Sciences, 2022, v. 262, n. 1, p. 32, doi. 10.1007/s10958-022-05797-w
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- Article
19
Matrices with Pairwise Orthogonal Rows and Columns.
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- Journal of Mathematical Sciences, 2022, v. 262, n. 1, p. 27, doi. 10.1007/s10958-022-05796-x
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- Article
20
Specific Features of Cosquares of Special Matrices in Indefinite Metric Spaces.
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- Journal of Mathematical Sciences, 2021, v. 255, n. 3, p. 279, doi. 10.1007/s10958-021-05378-3
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- Article
21
The Structure of Solutions of the Matrix Equation Jn(0)Y + Y⏉Jn(0) = 0 for Even n.
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- Journal of Mathematical Sciences, 2021, v. 255, n. 3, p. 277, doi. 10.1007/s10958-021-05370-x
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- Article
22
Congruence of Unitary Matrices.
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- Journal of Mathematical Sciences, 2021, v. 255, n. 3, p. 275, doi. 10.1007/s10958-021-05369-4
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- Article
23
Checking the Congruence of Involutive Matrices.
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- Journal of Mathematical Sciences, 2021, v. 255, n. 3, p. 271, doi. 10.1007/s10958-021-05368-5
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- Article
24
Congruence Criteria for Normal and Conjugate-Normal Matrices.
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- Journal of Mathematical Sciences, 2020, v. 249, n. 2, p. 195, doi. 10.1007/s10958-020-04933-8
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- Article
25
Rationally Verifiable Necessary Conditions for Hermitian Congruence of Complex Matrices.
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- Journal of Mathematical Sciences, 2020, v. 249, n. 2, p. 189, doi. 10.1007/s10958-020-04932-9
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- Article
26
An Attempt of Spectral Theory for ∗-Congruence Transformations.
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- Journal of Mathematical Sciences, 2020, v. 249, n. 2, p. 185, doi. 10.1007/s10958-020-04931-w
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- Article
27
Similarity Automorphisms of the Space of Hankel Matrices.
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- Journal of Mathematical Sciences, 2020, v. 249, n. 2, p. 113, doi. 10.1007/s10958-020-04925-8
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- Article
28
On a Finite Algorithm for Computing Neutral Subspaces of Skew-Symmetric Matrices.
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- Journal of Mathematical Sciences, 2019, v. 240, n. 6, p. 769, doi. 10.1007/s10958-019-04394-8
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29
Pseudo-Orthogonal Eigenvalues of Skew-Symmetric Matrices.
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- Journal of Mathematical Sciences, 2019, v. 240, n. 6, p. 765, doi. 10.1007/s10958-019-04393-9
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30
A Rational Criterion for Congruence of Square Matrices.
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- Journal of Mathematical Sciences, 2019, v. 240, n. 6, p. 762, doi. 10.1007/s10958-019-04392-w
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- Article
31
Similarity and Consimilarity Automorphisms of the Space of Toeplitz Matrices.
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- Journal of Mathematical Sciences, 2019, v. 240, n. 6, p. 707, doi. 10.1007/s10958-019-04387-7
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32
Description of Pairs of Anti-Commuting Toeplitz and Hankel Matrices.
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- Journal of Mathematical Sciences, 2018, v. 232, n. 6, p. 848, doi. 10.1007/s10958-018-3915-9
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33
The Minimal and Characteristic Polyanalytic Polynomials of a Normal Matrix.
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- Journal of Mathematical Sciences, 2018, v. 232, n. 6, p. 844, doi. 10.1007/s10958-018-3914-x
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- Article
34
The CMV Matrix and the Generalized Lanczos Process.
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- Journal of Mathematical Sciences, 2018, v. 232, n. 6, p. 837, doi. 10.1007/s10958-018-3913-y
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- Article
35
Binormal Matrices.
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- Journal of Mathematical Sciences, 2018, v. 232, n. 6, p. 830, doi. 10.1007/s10958-018-3912-z
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36
Decompositions of Pseudo-Unitary and Centro-Unitary Matrices.
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- Journal of Mathematical Sciences, 2017, v. 224, n. 6, p. 861, doi. 10.1007/s10958-017-3455-8
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- Article
37
The Congruent Centralizer of a Block Diagonal Matrix.
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- Journal of Mathematical Sciences, 2017, v. 224, n. 6, p. 877, doi. 10.1007/s10958-017-3457-6
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- Article
38
The Congruent Centralizer of the Horn-Sergeichuk Matrix.
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- Journal of Mathematical Sciences, 2017, v. 224, n. 6, p. 883, doi. 10.1007/s10958-017-3458-5
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39
The Congruent Centralizer of the Jordan Block.
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- Journal of Mathematical Sciences, 2017, v. 224, n. 6, p. 869, doi. 10.1007/s10958-017-3456-7
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- Article
40
Neutral Subspaces of Complex Matrices.
- Published in:
- Journal of Mathematical Sciences, 2016, v. 216, n. 6, p. 783, doi. 10.1007/s10958-016-2942-7
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- Article
41
How to Check Whether Given Square Matrices are Congruent.
- Published in:
- Journal of Mathematical Sciences, 2016, v. 216, n. 6, p. 787, doi. 10.1007/s10958-016-2943-6
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- Article
42
Isolation of the Regular Part of a Singular Matrix Pencil as a Rational Algorithm.
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- Journal of Mathematical Sciences, 2016, v. 216, n. 6, p. 792, doi. 10.1007/s10958-016-2944-5
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- Article
43
On the Eigenvalues of Certain Classes of Normal ( T + H)-Matrices.
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- Journal of Mathematical Sciences, 2016, v. 216, n. 6, p. 725, doi. 10.1007/s10958-016-2935-6
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- Article
44
On the Dimension of the Congruence Centralizer.
- Published in:
- Doklady Mathematics, 2020, v. 102, n. 1, p. 276, doi. 10.1134/S1064562420040079
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- Article
45
On the Parameters of the Singular Part of the Horn—Sergeichuk Regularizing Decomposition.
- Published in:
- Doklady Mathematics, 2018, v. 98, n. 1, p. 301, doi. 10.1134/S1064562418050034
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- Article
46
On Matrices Having as Their Cosquare.
- Published in:
- Mathematical Notes, 2021, v. 110, n. 1/2, p. 72, doi. 10.1134/S0001434621070075
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- Article
47
Solving Systems of Linear Equations with Normal Coefficient Matrices and the Degree of the Minimal Polyanalytic Polynomial.
- Published in:
- Mathematical Notes, 2018, v. 104, n. 1/2, p. 48, doi. 10.1134/S0001434618070064
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48
Checking the congruence between accretive matrices.
- Published in:
- Mathematical Notes, 2017, v. 101, n. 5/6, p. 969, doi. 10.1134/S0001434617050236
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- Article
49
Non-Hermitian matrices of even order and neutral subspaces of half the dimension.
- Published in:
- Mathematical Notes, 2016, v. 100, n. 5/6, p. 720, doi. 10.1134/S0001434616110080
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- Publication type:
- Article
50
A duality relation for unitary automorphisms in the spaces of Toeplitz and Hankel matrices.
- Published in:
- Mathematical Notes, 2016, v. 99, n. 1/2, p. 3, doi. 10.1134/S0001434616010016
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- Publication type:
- Article