Results 21 to 30 of about 10,905,906 (292)
Kamenev-Type Asymptotic Criterion of Fourth-Order Delay Differential Equation
Fractal and Fractional, 2020 In this paper, we obtain necessary and sufficient conditions for a Kamenev-type oscillation criterion of a fourth order differential equation of the form r 3 t r 2 t r 1 t y ′ t ′ ′ ′ + q t f y &
Omar Bazighifan
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Stability analysis of second- and fourth-order finite-difference modelling of wave propagation in orthotropic media [PDF]
, 2010 The stability of the finite-difference approximation of elastic wave propagation in orthotropic homogeneous media in the three-dimensional case is discussed.
Veres, Istvan
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On fourth-order jacobsthal quaternions
Journal of Mathematical Sciences and Modelling, 2018 In this paper, we present for the first time a sequence of quaternions of order 4 that we will call the fourth-order Jacobsthal and the fourth-order Jacobsthal-Lucas quaternions. In particular, we are interested in the generating function, Binet formula,
Gamaliel Cerda-morales
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Existence for Nonlinear Fourth-Order Two-Point Boundary Value Problems
Dynamics, 2023 The present paper is devoted to the solvability of various two-point boundary value problems for the equation y(4)=f(t,y,y′,y″,y‴), where the nonlinearity f may be defined on a bounded set and is needed to be continuous on a suitable subset of its domain.
Ravi Agarwal +2 more
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Fourth Order Diffusion Equations with Increasing Entropy
Entropy, 2012 The general quasi-linear autonomous fourth order diffusion equation <em>u<sub>t</sub> = −[G(u)u<sub>xxx </sub> + h(u, u<sub>x</sub>, u<sub>xx</sub>)]<sub>x </sub></em> ...
Philip Broadbridge, Naghmana Tehseen
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Virial theorem in scalar tensor fourth order gravity
European Physical Journal C: Particles and Fields, 2021 In this paper, we study, in the Newtonian limit, the virial theorem in the context of a scalar tensor fourth order gravity. In particular, we show, that for a isolated galaxy in viral equilibrium, a specific class of scalar tensor fourth order gravity, i.
A. Capolupo +3 more
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THE FOURTH ORDER MIXED PERIODIC RECURRENCE FRACTIONS
Journal of Vasyl Stefanyk Precarpathian National University, 2015 Offered economical algorithm for calculation of rational shortenings of thefourth-order mixed periodic recurrence fraction.
A.V. Semenchuk, R.A. Zatorsky
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Neumann's problem for one equation fourth order
Vestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2009 Neumann's problem for pseudoparabolic equation of the 4th order in a rectangular domain is considered in the paper. The existence and uniqueness of solution are proved.
E. A. Utkina
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Oscillation of noncanonical fourth-order dynamic equations
Applied Mathematics in Science and Engineering, 2023 We present two sufficient conditions for the oscillatory behaviour of a class of noncanonical fourth-order dynamic equations on arbitrary time scales. An illustrative example is included to show that new criteria improve related results reported in the ...
Qingmin Liu +3 more
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Aerospace, 2017 This paper presents the development of a fourth-order finite difference computational aeroacoustics solver. The solver works with a structured multi-block grid domain strategy, and it has been parallelized efficiently by using an interface treatment ...
Bidur Khanal +2 more
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