Oscillations of equations caused by several deviating arguments

George E. Chatzarakis
2019 Opuscula Mathematica  
Linear delay or advanced differential equations with variable coefficients and several not necessarily monotone arguments are considered, and some new oscillation criteria are given. More precisely, sufficient conditions, involving \(\lim\sup\) and \(\lim\inf\), are obtained, which essentially improve several known criteria existing in the literature. Examples illustrating the results are also given, numerically solved in MATLAB.
doi:10.7494/opmath.2019.39.3.321 fatcat:im24d5bskva4do6qlawqkthbhi