Results 21 to 30 of about 1,304,903 (278)
Optimizing Finite-Difference Operator in Seismic Wave Numerical Modeling
Algorithms, 2022 The finite-difference method is widely used in seismic wave numerical simulation, imaging, and waveform inversion. In the finite-difference method, the finite difference operator is used to replace the differential operator approximately, which can be ...
Hui Li +4 more
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Cosymmetries and Nijenhuis recursion operators for difference equations [PDF]
, 2010 In this paper we discuss the concept of cosymmetries and co--recursion operators for difference equations and present a co--recursion operator for the Viallet equation.
Ablowitz M J +21 more
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Vestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2019 We study the Tricomi problem for the functional-differential mixed-compound equation $LQu(x,y)=0$ in the class of twice continuously differentiable solutions.
Alexandr Nikolaevich Zarubin +1 more
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On spectral properties of a nonselfadjoint difference operator [PDF]
Компьютерные исследования и моделирование, 2010 The eigenvalue problem for a nonselfadjoint difference operator with nonconstant coefficient is considered. The main peculiarity of the problem is that its solution satisfies a two-point nonlocal boundary condition.
Andrey Yur'evich Mokin
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A Comparison Result for the Nabla Fractional Difference Operator
Foundations, 2023 This article establishes a comparison principle for the nabla fractional difference operator ∇ρ(a)ν ...
Jagan Mohan Jonnalagadda
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Symmetrizable finite difference operators [PDF]
Mathematics of Computation, 1990 We introduce the notion of a symmetrizable finite difference operator and prove that such operators are stable. We then present some sufficient conditions for symmetrizability. One of these extends H.-O. Kreiss’ theorem on dissipative difference schemes for hyperbolic equations to a more general case with full (x, t)-variable coefficients.
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Acta Scientiarum: Technology, 2014 In this paper, we introduce and investigate relationship among I-statistically Delta_r^s -convergent, I-lambda-statistically Delta_r^s-convergent and I-[V, lambda, Delta_r^s]-summable sequences respectively over normed linear ...
Hemen Dutta +2 more
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Open Mathematics, 2023 Let ff be a transcendental entire function of finite order with a Picard exceptional value β∈C\beta \in {\mathbb{C}}, q∈C\{0,1}q\in {\mathbb{C}}\setminus \left\{0,1\right\} and cc are complex constants. The authors prove that Dq,cf(z)−af(z)−a=aa−β,\frac{{
Zhang Xiaomei, Wu Zhaojun
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TUNED FINITE-DIFFERENCE DIFFUSION OPERATORS [PDF]
The Astrophysical Journal Supplement Series, 2009 13 pages, 3 ...
Maron, Jason, Mac Low, Mordecai-Mark
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, 2020 In this contribution we consider sequences of monic polynomials orthogonal with respect to Sobolev-type inner product \[ \left\langle f,g\right\rangle= \langle {\bf u}^{\tt M},fg\rangle+\lambda \mathscr T^j f (\alpha)\mathscr T^{j}g(\alpha), \] where ...
Costas-Santos, R. S. +2 more
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