%0 Generic
%A  Sugie Jitsuro
%D 2020
%F acta:69522
%K Differenciálegyenlet
%N 18
%T A remark on Philos-type oscillation criteria for differential equations
%U http://acta.bibl.u-szeged.hu/69522/
%X The purpose of this short note is to call attention to expressions of Philostype criteria for the oscillation of solutions of a simple differential equation. A perfect square expression is used to obtain an evaluation that plays an essential role in the proof of Philos-type oscillation theorems. The required condition is pointed out when using the perfect square expression. To simplify the discussion, here we deal with two second-order linear differential equations, but its content is also applied to a variety of equations.
%Z Bibliogr.: 7. p. ; összefoglalás angol nyelven