The oscillation of certain higher-order functional differential equations
Some new criteria for the oscillation of general functional differential equations of the form d/dt ([1/a(n-1)(t) d/dt 1/a(n-2)(t) d/dt...1/a(1)(t) d/dtx(t)](alpha)) + q(t)f(x\g(t)]) = 0, n is even, are established. (C) 2003 Elsevier Science Ltd. All rights reserved.
oscillation nonoscillation comparison half-linear linearization