Results 1 to 10 of about 63,325 (230)
Linear operators with vector masks in digital image processing problems
Компьютерная оптика, 2023 The paper shows that it is expedient to use vector masks for solving some types of digital image processing problems. The main advantage of vector masks compared to matrix masks is that they reduce the computational complexity of algorithms while ...
A.I. Novikov, A.V. Pronkin
doaj +1 more source
Topological Algebra and its Applications, 2023 In this article, we study the λ\lambda -commuting of bounded linear operators on ultrametric Banach spaces and the determinant spectrum of ultrametric matrices.
Ettayb Jawad
doaj +1 more source
Recurrent Linear Operators [PDF]
Complex Analysis and Operator Theory, 2013 38 pages; final version, incorporates referee's report; to appear in Complex Anal.
Costakis, George +2 more
openaire +4 more sources
The task of integral geometry with measure induction [PDF]
Компьютерные исследования и моделирование, 2011 A new statement of Integral Geometry problem where the image of function in each point is taken as an integral with respect to measure which depends on the point is suggested. Such Measure System is named Measure Induction.
A. V. Koganov
doaj +1 more source
Decomposition of Linear Operators on Pre-Euclidean Spaces by Means of Graphs
Mathematics, 2023 In this work, we study a linear operator f on a pre-Euclidean space V by using properties of a corresponding graph. Given a basis B of V, we present a decomposition of V as an orthogonal direct sum of certain linear subspaces {Ui}i∈I, each one admitting ...
Hani Abdelwahab +3 more
doaj +1 more source
Simple eigenvectors of unbounded operators of the type “normal plus compact” [PDF]
Opuscula Mathematica, 2015 The paper deals with operators of the form \(A=S+B\), where \(B\) is a compact operator in a Hilbert space \(H\) and \(S\) is an unbounded normal one in \(H\), having a compact resolvent.
Michael Gil'
doaj +1 more source
Linear Operator Equations [PDF]
Proceedings of the American Mathematical Society, 1959 where / is holomorphic on a(u, Ct) — a(v, Ct), and c is a suitable contour. In the present note we study the operator SG® defined by Sx = 'YJi=iuixvi, {ui} and {vj} being commutative subsets of Ct; but it is understood that {uj} need not commute with {vj}. In a generic way, we shall refer to such an operator as an "elementary operator."2 Of course this
Lumer, G., Rosenblum, M.
openaire +2 more sources
On approximation properties of some non-positive Bernstein-Durrmeyer type operators
Analele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2023 In this paper we shall introduce a new type of Bernstein Durrmeyer operators which are not positive on the entire interval [0, 1]. For these operators we will study the uniform convergence on all continuous functions on [0, 1] as well as a result given ...
Vasian Bianca Ioana
doaj +1 more source
Factorization method for solving nonlocal boundary value problems in Banach space
Қарағанды университетінің хабаршысы. Математика сериясы, 2021 This article deals with the factorization and solution of nonlocal boundary value problems in a Banach space of the abstract form B1 u = A u - S Φ( u )- G Ψ(A0 u) = f, u ∈ D (B1) , where A, A0 are linear abstract operators, S, G are vectors of functions,
I.N. Parasidis, E. Providas
doaj +1 more source
Hypercausal Linear Operators [PDF]
SIAM Journal on Control and Optimization, 1984 Several different classes of hypercausal operators appear in linear system theory. This paper provides, for each pair of classes of hypercausal operators, necessary and sufficient conditions on the Hilbert resolution space to guarantee equality of the classes. In addition, the effect of similarity transforms on each class is studied.
openaire +2 more sources