Zobrazeno 1 - 4
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pro vyhledávání: '"Derr, V. Ya."'
Autor:
Derr, V. Ya.
The present book gives a systematic overview of function theory and the theory of Stieltjes integral. In particular, we give a detailed account of the theory of functions of bounded variation and of the theory of regulated functions (= functions havi
Externí odkaz:
http://arxiv.org/abs/2405.12887
Autor:
Derr, V. Ya.
Suppose that an $n$-dimensional Cauchy problem \frac{dx}{dt}=f(t,x,\mu) (t \in I, \mu \in M), x(t_0)=x^0 satisfies the conditions that guarantee existence, uniqueness and continuous dependence of solution x(t,t_0,\mu) on parameter \mu in an open set
Externí odkaz:
http://arxiv.org/abs/1205.0208
Autor:
Derr, V. Ya.
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, our criterion does not involve assumptions on the smallness of the c
Externí odkaz:
http://arxiv.org/abs/1005.5646
Autor:
Derr, V. Ya.
This is an introduction to the theory of disconjugacy for a second order linear differential equation. We give new proofs of some of basic results and obtain new sufficient conditions for disconjugacy (in particular, on the whole real axis).
Externí odkaz:
http://arxiv.org/abs/0811.4636