Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the Existence of a Solution of the Boundary Initial-Value Problem   An initial-value problem for an ordinary differential equation of the first
order, is considered. It is supposed that the right-hand side of the equation
is a continuous function defined on a set consisting of an open set and a part
of its bound. Sufficient conditions of the existence and of non-existence of a
solution through initial point belonging to the boundary part of the set of
definition, are presented.

0
The categories of this paper are: hep-ph
28
The categories of this paper are: alg-geom
23
The categories of this paper are: solv-int
6
The categories of this paper are: astro-ph
15
The categories of this paper are: nucl-ex
20
The categories of this paper are: acc-phys
33
The categories of this paper are: plasm-ph
14
The categories of this paper are: math-ph
5
The categories of this paper are: gr-qc
25
The categories of this paper are: patt-sol
12
The categories of this paper are: nucl-th
18
The categories of this paper are: econ
10
The categories of this paper are: q-bio
37
The categories of this paper are: supr-con
3
The categories of this paper are: physics
21
The categories of this paper are: adap-org