TY - JOUR ID - Baculíková2020 LB - Baculíková2020 AU - Baculíková, Blanka AU - Džurina, Jozef TI - Oscillatory criteria via linearization of half-linear second order delay differential equations ST - Oscillatory criteria via linearization of half-linear second order delay differential equations JO - Opuscula Math. JA - Opuscula Math. JF - Opuscula Mathematica PY - 2020 VL - 40 IS - 5 SP - 523 EP - 536 DO - https://doi.org/10.7494/OpMath.2020.40.5.523 UR - https://doi.org/10.7494/OpMath.2020.40.5.523 AB - In the paper, we study oscillation of the half-linear second order delay differential equations of the form \[\left(r(t)(y'(t))^{\alpha}\right)'+p(t)y^{\alpha}(\tau(t))=0.\] We introduce new monotonic properties of its nonoscillatory solutions and use them for linearization of considered equation which leads to new oscillatory criteria. The presented results essentially improve existing ones. KW - second order differential equations KW - delay KW - monotonic properties KW - linearization KW - oscillation SN - 1232-9274 ER -