Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Erna Begović Kovač"'
Autor:
Erna Begović Kovač, Ana Perković
Publikováno v:
Linear and Multilinear Algebra. :1-22
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a96d2fd77440506fe024867233945fc7
https://doi.org/10.1080/03081087.2022.2158997
https://doi.org/10.1080/03081087.2022.2158997
Autor:
Erna Begović Kovač
Publikováno v:
Linear Algebra and its Applications. 617:49-77
Given a structured matrix $A$ we study the problem of finding the closest normal matrix with the same structure. The structures of our interest are: Hamiltonian, skew-Hamiltonian, per-Hermitian, and perskew-Hermitian. We develop a structure-preservin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::926ba918819c59862c127c3529577fc0
https://doi.org/10.1016/j.laa.2021.01.013
https://doi.org/10.1016/j.laa.2021.01.013
Publikováno v:
Linear Algebra and its Applications. 608:322-342
Structured canonical forms under unitary and suitable structure-preserving similarity transformations for normal and (skew-)Hamiltonian as well as normal and per(skew)-Hermitian matrices are proposed. Moreover, an algorithm for computing those canoni
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::04f9db02350a947713806c7cdce30546
https://doi.org/10.1016/j.laa.2020.09.019
https://doi.org/10.1016/j.laa.2020.09.019
Autor:
Vjeran Hari, Erna Begović Kovač
In this paper we prove the global convergence of the complex Jacobi method for Hermitian matrices for a large class of generalized serial pivot strategies. For a given Hermitian matrix $A$ of order $n$ we find a constant $\gamma
Comment: 22 page
Comment: 22 page
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b32d4a4586593e80c207aef551d4ba75
https://www.bib.irb.hr/993468
https://www.bib.irb.hr/993468
Autor:
Erna Begović Kovač
For a general third-order tensor $\mathcal{A}\in\mathbb{R}^{n\times n\times n}$ the paper studies two closely related problems, an SVD-like tensor decomposition and an (approximate) tensor diagonalization. We develop a Jacobi-type algorithm that work
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8dbbc97e78d41286d75f039b928af076
https://www.bib.irb.hr/1146235
https://www.bib.irb.hr/1146235
Autor:
Erna Begović Kovač
The paper introduces a hybrid approach to the CUR-type decomposition of tensors in the Tucker format. The idea of the hybrid algorithm is to write a tensor $\mathcal{X}$ as a product of a core tensor $\mathcal{S}$, a matrix $C$ obtained by extracting
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f973270fbaabde5f3d6bd6d77744f42d
https://www.bib.irb.hr/1089199
https://www.bib.irb.hr/1089199
Autor:
Erna Begović Kovač
Publikováno v:
Poučak : časopis za metodiku i nastavu matematike
Volume 21
Issue 84
Volume 21
Issue 84
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od_______951::94a878dc791259b4a1b0c7d7a40d5d80
https://hrcak.srce.hr/255534
https://hrcak.srce.hr/255534
Autor:
Vjeran Hari, Erna Begović Kovač
Publikováno v:
Linear Algebra and its Applications. 524:199-234
The paper analyzes special cyclic Jacobi methods for symmetric matrices of order $4$. Only those cyclic pivot strategies that enable full parallelization of the method are considered. These strategies, unlike the serial pivot strategies, can force th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::181581ca01bd584709a9b06c5b548ec5
https://doi.org/10.1016/j.laa.2017.03.003
https://doi.org/10.1016/j.laa.2017.03.003
Autor:
Erna Begović Kovač, Daniel Kressner
This paper is concerned with low multilinear rank approximations to antisymmetric tensors, that is, multivariate arrays for which the entries change sign when permuting pairs of indices. We show which ranks can be attained by an antisymmetric tensor
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::572d7a312a27451f3bb7aa527f98136a
Autor:
Erna Begović Kovač, Vjeran Hari
Publikováno v:
PAMM. 16:725-726
The paper is concerned with the global convergence of the Jacobi method for symmetric matrices under a special class of cyclic pivot strategies. That class generalizes the well-known class of serial strategies. (© 2016 Wiley-VCH Verlag GmbH & Co. KG
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a8a816cee98c95d200a278d59a10508d
https://doi.org/10.1002/pamm.201610351
https://doi.org/10.1002/pamm.201610351