Results 1 to 10 of about 110,219 (262)
A NOTE ON q-DIFFERENCE OPERATORS
Communications of the Korean Mathematical Society, 2002 Summary: We present a \(q\)-analogue of the Newton's forward-difference interpolation formula and relate the \(q\)-beta function and the \(q\)-gamma function by the \(q\)-difference operators.
Min-Soo Kim
exaly +4 more sources
Methods for image noise level estimation
Компьютерная оптика, 2021 The article presents a method for estimating the level of discrete white noise in an image, based on the use of linear difference operators with a vector mask.
A.I. Novikov, A.V. Pronkin
doaj +1 more source
Finite-Difference Operators for 2D problems [PDF]
Bulletin of the Polish Academy of Sciences: Technical Sciences, 2020 This paper presents the concept of using algorithms for reducing the dimensions of finite-difference equations of two-dimensional (2D) problems, for second-order partial differential equations.
T. Sobczyk
doaj +1 more source
Phase-difference operator [PDF]
Physical Review A, 1993 We introduce a unitary operator representing the exponential of the phase difference between two modes of the electromagnetic field. The eigenvalue spectrum has a discrete character that is fully analyzed. We relate this operator with a suitable polar decomposition of the Stokes parameters of the field, obtaining a natural classical limit. The cases of
Luis Aina, Alfredo +1 more
openaire +3 more sources
Montgomery identity and Ostrowski-type inequalities via quantum calculus
Open Mathematics, 2021 In this paper, we prove a quantum version of Montgomery identity and prove some new Ostrowski-type inequalities for convex functions in the setting of quantum calculus.
Sitthiwirattham Thanin +4 more
doaj +1 more source
General estimates for the difference of operators
Computational and Mathematical Methods, 2019 Vijay Gupta
exaly +2 more sources
Landau’s inequality for the difference operator [PDF]
Proceedings of the American Mathematical Society, 1988 The best constants for Landau’s inequality with the classical p p -norms are known explicitly only when
Kwong, Man Kam, Zettl, A.
openaire +2 more sources
Solvability conditions for some difference operators
Advances in Difference Equations, 2005 Infinite-dimensional difference operators are studied. Under the assumption that the coefficients of the operator have limits at infinity, limiting operators and associated polynomials are introduced.
V. A. Volpert, N. C. Apreutesei
doaj +2 more sources
Calculation of particular solutions of nonhomogeneous linear equations with two linear operators, of which at least one is almost algebraic, in the case of simple roots of the characteristic equation [PDF]
Компьютерные исследования и моделирование, 2016 The concept of an operator is an almost algebraic with respect to two-sided ideal of the algebra of linear operators in some finite-dimensional linear spaces, it extended to the case when the ideal is left.
Vladimir G. Tsirulik
doaj +1 more source
Finite difference schemes with monotone operators
Advances in Difference Equations, 2004 Several existence theorems are given for some second-order difference equations associated with maximal monotone operators in Hilbert spaces. Boundary conditions of monotone type are attached.
Apreutesei NC
doaj +2 more sources