https://plomscience.com/journals/index.php/Math/issue/feed PLOMS Mathematics 2022-02-15T11:47:40-08:00 Editor-in-Cheif [email protected] Open Journal Systems <p><strong><em>PLOMS Mathematics</em> </strong>publishes original research articles as well as review articles on all aspects of both pure and applied mathematics. We are ready to consider original papers on any topics in mathematics but have a preference on the ones close to interest of the members of the editorial board such as differential equations, algebraic geometry, number theory, difference equations, complex geometry, differential geometry, bifurcation theory, coding theory, symplectic geometry, topology, representation theory, complex analysis, operator algebras fixed-point theory, Fourier analysis, fractional analysis, mathematical physics, mathematical biology, partial differential equations, topology and applications, fuzzy mathematics, signal theory, special functions, statistics, stochastic process, and probability theory.</p> https://plomscience.com/journals/index.php/Math/article/view/16 Oscillation criteria for third order nonlinear neutral differential equation 2022-02-15T10:46:16-08:00 Taher S. Hassan [email protected] Dr. Bassant M. El-Matary [email protected] <p>The purpose of this paper is to give oscillation criteria for the third order nonlinear neutral<br>differential equation<br>[a2(t){(a1(t)((x(t) + p(t)x(τ(t)))<sup>′</sup>)<sup>α1</sup> )<sup>′</sup>}<sup>α2</sup> ]<sup>′</sup> + q(t) f (x(g(t))) = 0.<br>Via comparison with some first order differential equations whose oscillatory characters are known.<br>Our results generalize and improve some known results for oscillation of third order nonlinear<br>differential equations. Some examples are given to illustrate our results.</p> 2022-02-15T00:00:00-08:00 Copyright (c) 2022 PLOMS Mathematics https://plomscience.com/journals/index.php/Math/article/view/17 Oscillation of third order damped nonlinear differential equation 2022-02-15T11:47:40-08:00 Elmetwally M. Elabbasy [email protected] Bassant M. El-Matary [email protected] <p>The purpose of this paper is to give oscillation criteria for the third order nonlinear<br>differential equation with daming term<br>&nbsp;<img src="https://plomscience.com/journals/public/site/images/admin/paper-2-eq.png" alt=""></p> <p>by using Riccati trasformatiom teqnique and comparison with first order differential equation whose<br>oscillatory characters are known. Our results generalize and improve some known results for<br>oscillation of third order nonlinear differential equations. Some examples are given to illustrate the<br>main results.</p> 2022-02-15T00:00:00-08:00 Copyright (c) 2022 PLOMS Mathematics