Results 21 to 30 of about 176,678 (310)

Linear Operator Inequality and Null Controllability with Vanishing Energy for Unbounded Control Systems [PDF]

open access: yes, 2013
We consider a linear boundary or point control system on a Hilbert space $H$ which is null controllable at some time $T_0 >0$. To every initial state $ y_0 \in H$ we associate the minimal ``energy'' needed to transfer $ y_0 $ to $ 0 $ in a time $ T \ge ...
Zabczyk, J.   +7 more
core   +1 more source

Steady-State Analysis of a Flexible Markovian Queue with Server Breakdowns

open access: yesEntropy, 2019
A flexible single-server queueing system is considered in this paper. The server adapts to the system size by using a strategy where the service provided can be either single or bulk depending on some threshold level c.
Messaoud Bounkhel   +2 more
doaj   +1 more source

Algebraic reflexivity of isometry groups and automorphism groups of some operator structures [PDF]

open access: yes, 2013
We establish the algebraic re exivity of three isometry groups of operator structures: The group of all surjective isometries on the unitary group, the group of all surjective isometries on the set of all positive invertible operators equipped with ...
Botelho, Fernanda   +2 more
core   +1 more source

Linear Algebra and Smarandache Linear Algebra [PDF]

open access: yes, 2003
The present book, on Smarandache linear algebra, not only studies the Smarandache analogues of linear algebra and its applications, it also aims to bridge the need for new research topics pertaining to linear algebra, purely in the algebraic sense.
Vasantha, Kandasamy
core   +1 more source

Certain subclasses of analytic functions defined by a new general linear operator

open access: yesИзвестия Иркутского государственного университета: Серия "Математика", 2018
Hypergeometric functions are of special interests among the complex analysts especially in looking at the properties and criteria of univalent. Hypergeometric functions have been around since 1900’s and have special applications according to their own ...
A.R.S. Juma, M. Darus
doaj   +1 more source

Complexity of Linear Operators

open access: yesElectron. Colloquium Comput. Complex., 2018
Let $A \in \{0,1\}^{n \times n}$ be a matrix with $z$ zeroes and $u$ ones and $x$ be an $n$-dimensional vector of formal variables over a semigroup $(S, \circ)$. How many semigroup operations are required to compute the linear operator $Ax$? As we observe in this paper, this problem contains as a special case the well-known range queries problem and ...
Alexander S. Kulikov   +3 more
openaire   +5 more sources

Topological methods on solvability, multiplicity and bifurcation of a nonlinear fractional boundary value problem

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2015
In this paper, we first prove new properties of the $(a, q)$-stably solvable maps for a class of decomposable operators in the form of $LF$, where $L$ is a bounded linear operator and $F$ is nonlinear.
Wenying Feng
doaj   +1 more source

Compressive identification of linear operators [PDF]

open access: yes2011 IEEE International Symposium on Information Theory Proceedings, 2011
To be presented at IEEE Int. Symp. Inf.
Reinhard Heckel, Helmut Bölcskei
openaire   +2 more sources

Estimates of approximative characteristics of the classes $B^{\Omega}_{p,\theta}$ of periodic functions of several variables with given majorant of mixed moduli of continuity in the space $L_{q}$

open access: yesKarpatsʹkì Matematičnì Publìkacìï, 2019
In this paper, we continue the study of approximative characteristics of the classes $B^{\Omega}_{p,\theta}$ of periodic functions of several variables whose majorant of the mixed moduli of continuity contains both exponential and logarithmic multipliers.
O.V. Fedunyk-Yaremchuk, S.B. Hembars'ka
doaj   +1 more source

ON SOME APPLICATIONS OF ISOMETRICITY OF FUNCTIONAL SPACES IN APPLIED MATHEMATICS

open access: yesМіжнародний науково-технічний журнал "Проблеми керування та інформатики", 2020
Problems of computational mathematics are directly connected with an implementation of mathematical models in conditions of limited initial information.
Д.М. Бушев
doaj   +1 more source

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