COMPARISON AND INTEGRAL COMPARISON-THEOREMS FOR LINEAR-DIFFERENTIAL EQUATIONS

[摘要] Comparison theorems are developed for the equation Ly + q(x)y = 0, where L is a linear disconjugate differential operator of order n, n greater than or equal to 2, and q(x) is a continuous function of one sign. The criteria include, as special cases, some direct and integral comparison results previously obtained. By the same criteria we settle a question posed by Butler and Erbe. (C) 1994 Academic Press, Inc.

[发布日期] 1994-11-01