2 papers
math.CA2012
On uniform continuous dependence of solution of Cauchy problem on a parameter
V. Ya. Derr
Suppose that an -dimensional Cauchy problem \frac{dx}{dt}=f(t,x,μ) (t \in I, μ\in M), x(t_0)=x^0 satisfies the conditions that guarantee existence, uniqueness and continuous dep…
math.CA2010
Disconjugacy of a second order linear differential equation and periodic solutions
V. Ya. Derr
The present paper is devoted to a new criterion for disconjugacy of a second order linear differential equation. Unlike most of the classical sufficient conditions for disconjugacy…