Results 31 to 40 of about 12,171,095 (269)

DIFFERENTIAL EQUATIONS OF THE FOURTH ORDER WITH ORTHOGONAL POLYNOMIAL SOLUTIONS

open access: yesPesquimat, 2014
In this paper we developed conditions for orthogonality of polynomial Solutions of the fourth order differential equations with polynomial coefficients.
Santiago César Rojas Romero
doaj   +1 more source

Oscillation of certain fourth-order functional differential equations [PDF]

open access: yesUkrainian Mathematical Journal, 2007
Some new criteria for the oscillation of the fourth order functional differential equation (1/a(t)(x″(t))α)″ = q(t)f(x[g(t)]) + p(t)h(x[σ(t)]) are established.
Agarwal, R.P.   +2 more
openaire   +2 more sources

Fourth order partial differential equations on general geometries [PDF]

open access: yesJournal of Computational Physics, 2006
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
John B. Greer   +2 more
openaire   +1 more source

Kamenev and Philos-types oscillation criteria for fourth-order neutral differential equations

open access: yesAdvances in Difference Equations, 2020
This work is concerned with the oscillatory behavior of solutions of fourth-order neutral differential equations. By using the Riccati transformation and integral averaging techniques we obtain some new Kamenev-type and Philos-type oscillation criteria ...
Omar Bazighifan
doaj   +1 more source

Stability of some differential equations of the fourth-order and fifth-order

open access: yesЖурнал Белорусского государственного университета: Математика, информатика, 2019
The article is devoted to the study of the problem of stability of nonlinear ordinary differential equations by the method of semi-definite Lyapunov’s functions. The types of fourth-order and fifth-order scalar nonlinear differential equations of general
Boris S. Kalitine
doaj   +1 more source

Euler case for a general fourth‐order differential equation [PDF]

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2004
We deal with an Euler case for a general fourth‐order equation and under this case, we obtain the general formula for the asymptotic form of the solutions.
openaire   +3 more sources

Finite-difference solutions of tenth-order boundary-value problems [PDF]

open access: yes, 1994
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.In this thesis finite difference methods are used to obtain numerical solutions for a class of high-order ordinary differential equations with applications ...
Siddiqui, Aijaz Ahmad
core   +7 more sources

Sharp oscillation theorem for fourth-order linear delay differential equations

open access: yesJournal of Inequalities and Applications, 2022
In this paper, we present a single-condition sharp criterion for the oscillation of the fourth-order linear delay differential equation x ( 4 ) ( t ) + p ( t ) x ( τ ( t ) ) = 0 $$ x^{(4)}(t) + p(t)x\bigl(\tau (t)\bigr) = 0 $$ by employing a novel method
Irena Jadlovská   +3 more
doaj   +1 more source

Correction to: “Periodic solutions of fourth-order differential equations” [PDF]

open access: yesProceedings of the American Mathematical Society, 1967
1. M. Abramowitz and I. A. Stegun, Handbook of mathematical functions with formulas, graphs, and mathematical tables, National Bureau of Standards, Applied Mathematics Series 55, 3rd printing, with corrections, March, 1965. 2. P. F. Hsieh and Y. Sibuya, On the asymptotic integration of second order linear ordinary differential equations with polynomial
openaire   +2 more sources

Spatial and single‐nuclei transcriptomics reveals idiosyncratic and generic patterns in papillary and anaplastic thyroid cancers

open access: yesMolecular Oncology, EarlyView.
Matched spatial transcriptomics and single‐nuclei RNA‐seq were generated for anaplastic and BRAFV600E papillary thyroid cancers revealing generic and tumor‐specific states occurring in cancer cells and in the tumor microenvironment. In this context, cancer dedifferentiation mirrored organoid maturation through ordered thyroid marker gain/loss ...
Adrien Tourneur   +11 more
wiley   +1 more source

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