Zobrazeno 1 - 10
of 28
pro vyhledávání: '"Tatjana Petek"'
Publikováno v:
Foods, Vol 10, Iss 8, p 1809 (2021)
Knowledge of the mathematical models of the fermentation processes is indispensable for their simulation and optimization and for the design and synthesis of the applicable control systems. The paper focuses on determining a dynamic mathematical mode
Externí odkaz:
https://doaj.org/article/eb70ad9f4f9743da97ce2ef576d85719
Publikováno v:
Symmetry, Vol 12, Iss 8, p 1300 (2020)
We provide a general method for identifying real quadratic polynomial dynamical systems that can be transformed to symmetric ones by a bijective polynomial map of degree one, the so-called affine map. We mainly focus on symmetry groups generated by r
Externí odkaz:
https://doaj.org/article/e84c38da2c8e4636bcd1e11a867b9334
Autor:
Roja Hosseinzadeh, Tatjana Petek
Publikováno v:
Linear Algebra and its Applications. 671:109-120
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a1771d2bbc2c6d41df61afd6c6d1de57
https://doi.org/10.1016/j.laa.2023.04.006
https://doi.org/10.1016/j.laa.2023.04.006
Autor:
Gordana Radić, Tatjana Petek
Publikováno v:
Linear Algebra and its Applications. 633:1-22
We give the complete description of bijective real-linear transformations on B ( H ) , the algebra of all bounded linear operators on an infinite-dimensional complex Hilbert space H , where every unitary U ∈ B ( H ) is mapped to a unitary ϕ ( U )
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0fca3ef23c9ee862b9aa7f40b0709cf2
https://doi.org/10.1016/j.laa.2021.09.018
https://doi.org/10.1016/j.laa.2021.09.018
Autor:
Gordana Radić, Tatjana Petek
Publikováno v:
Linear and Multilinear Algebra. 68:2289-2297
Let B ( X ) be the algebra of all bounded linear operators on complex Banach space X and let the relation A ∼ B , A , B ∈ B ( X ) , denote B=TAS for some invertible T , S ∈ B ( X ) . We will give a...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ac9e8461b3d8db8f38a9527514d0f887
https://doi.org/10.1080/03081087.2019.1578727
https://doi.org/10.1080/03081087.2019.1578727
Publikováno v:
Applied Mathematics and Computation. 338:55-71
For a given family of real planar polynomial systems of ordinary differential equations depending on parameters, we consider the problem of how to find the systems in the family which become time-reversible after some affine transformation. We first
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::eaf628a87019455f059658b788437a07
https://doi.org/10.1016/j.amc.2018.05.051
https://doi.org/10.1016/j.amc.2018.05.051
Autor:
Bojan Kuzma, Tatjana Petek
Publikováno v:
Journal of Mathematical Analysis and Applications. 455:1579-1596
Surjective isometries in a given unitarily invariant norm on n -by- n complex matrices and with respect to Jordan product, are classified. Moreover, the similar problem is considered for a much wider class of unitarily invariant functions.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::76e72ad670e16f3afd7081cf6105d85f
https://doi.org/10.1016/j.jmaa.2017.06.043
https://doi.org/10.1016/j.jmaa.2017.06.043
Autor:
Tatjana Petek, Mahdi Karder
Publikováno v:
Linear Algebra and its Applications. 532:86-98
Let S ( H ) be the set of all linear positive-semidefinite self-adjoint Trace-one operators (states) on H where H is an at least two-dimensional finite-dimensional real or complex Hilbert space or at least three-dimensional left quaternionic Hilbert
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c5e3591272456e05847485800f1a3215
https://doi.org/10.1016/j.laa.2017.06.003
https://doi.org/10.1016/j.laa.2017.06.003
Autor:
Gordana Radić, Tatjana Petek
Publikováno v:
Studia Mathematica. 238:101-119
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6616ad9a50ea2342e75a45697c165b41
https://doi.org/10.4064/sm8356-12-2016
https://doi.org/10.4064/sm8356-12-2016
Autor:
Tatjana Petek
Publikováno v:
Linear Algebra and its Applications. 487:86-111
Given n ≥ 2 let 2 ≤ k ≤ n be fixed. We study mappings ϕ on M n , the algebra of n × n complex matrices, that satisfy N k ( ϕ ( A ) ϕ ( B ) + ϕ ( B ) ϕ ( A ) ) = N k ( A B + B A ) for all A , B ∈ M n , where N k ( C ) denotes the Ky-Fan
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d5e8095604377a878f10c06496da979c
https://doi.org/10.1016/j.laa.2015.09.004
https://doi.org/10.1016/j.laa.2015.09.004