In this paper, we present some criteria for the oscillation of the differential equation with damping (γ(t)x'(t))' + p(t)x'(t) + q(t)x(t) = 0, t ∈ [ t0, ∞), where p(t) and q(t) are allowed to change ...

Rocky Mountain Journal of Mathematics publishes both research and expository articles in mathematics, and particularly invites well-written survey articles. The Rocky Mountain Journal of Mathematics ...

In Power Tip #3, we discussed how the source impedance of an input filter can turn resistive, and how it can interact with the negative input impedance of a switching regulator. At worst case, these ...