Results 11 to 20 of about 703,061 (267)
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
doaj +1 more source
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
doaj +1 more source
Oscillation of Neutral Differential Equations with Damping Terms
Mathematics, 2023 Our interest in this paper is to study and develop oscillation conditions for solutions of a class of neutral differential equations with damping terms. New oscillation criteria were obtained by using Riccati transforms. The criteria we obtained improved
Ioannis Dassios +3 more
doaj +1 more source
The fourth order strongly noncanonical operators
Open Mathematics, 2018 It is shown that the strongly noncanonical fourth order ...
Baculikova Blanka, Dzurina Jozef
doaj +1 more source
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
doaj +1 more source
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
doaj +1 more source
A fourth‐order incremental ADC in three‐step
The Journal of Engineering, 2021 This letter presents a second‐order incremental ADC (IADC) operated in three steps, which extends the performance of a second‐order IADC close to that of a fourth‐order IADC with only two amplifiers.
Jia‐Sheng Huang +5 more
doaj +1 more source
Comparison theorems for fourth order differential equations
International Journal of Mathematics and Mathematical Sciences, 1986 This paper establishes an apparently overlooked relationship between the pair of fourth order linear equations yiv−p(x)y=0 and yiv+p(x)y=0, where p is a positive, continuous function defined on [0,∞).
Garret J. Etgen, Willie E. Taylor
doaj +1 more source
Isoperimetric inequalities of the fourth order Neumann eigenvalues
Journal of Inequalities and Applications, 2020 In this paper, we obtain some isoperimetric inequalities for the first ( n − 1 ) $(n-1)$ eigenvalues of the fourth order Neumann Laplacian on bounded domains in an n-dimensional Euclidean space. Our result supports strongly the conjecture of Chasman.
Yanlin Deng, Feng Du
doaj +1 more source
A fourth-order compact solver for fractional-in-time fourth-order diffusion equations
CoRR, 2019 A fourth-order compact scheme is proposed for a fourth-order subdiffusion equation with the first Dirichlet boundary conditions. The fourth-order problem is firstly reduced into a couple of spatially second-order system and we use an averaged operator to construct a fourth-order spatial approximation. This averaged operator is compact since it involves
Jialing Zhong +3 more
openaire +2 more sources