TY - JOUR ID - Chatzarakis2019 LB - Chatzarakis2019 AU - Chatzarakis, George E. TI - Oscillations of equations caused by several deviating arguments ST - Oscillations of equations caused by several deviating arguments JO - Opuscula Math. JA - Opuscula Math. JF - Opuscula Mathematica PY - 2019 VL - 39 IS - 3 SP - 321 EP - 353 DO - https://doi.org/10.7494/OpMath.2019.39.3.321 UR - https://doi.org/10.7494/OpMath.2019.39.3.321 AB - 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. KW - differential equation KW - non-monotone argument KW - oscillatory solution KW - nonoscillatory solution SN - 1232-9274 ER -