English

Caratheodory's solution of the Cauchy problem and question Z.Grande

General Topology 2015-12-29 v1 Functional Analysis

Abstract

It is shown that for a function f:R2Rf:\mathbb R^2\to \mathbb R which is measurable with respect to the first variable and upper semicontinuous quasicontinuous and increasing with respect to the second variable there exists a Caratheodory's solution y(x)=y0+x0xf(t,y(t))dμ(t)y(x)=y_0+\int\limits_{x_0}^xf(t,y(t))d\mu(t) of the Cauchy problem y(x)=f(x,y(x))y'(x)=f(x,y(x)) with the initial condition y(x0)=y0y(x_0)=y_0. There are constructed examples which indicate to essentiality of condition of increasing and give the negative answer to a question of Z.~Grande.

Keywords

Cite

@article{arxiv.1512.07970,
  title  = {Caratheodory's solution of the Cauchy problem and question Z.Grande},
  author = {Volodymyr Mykhaylyuk and Vadym Myronyk},
  journal= {arXiv preprint arXiv:1512.07970},
  year   = {2015}
}