Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Approximations and selections of multivalued mappings of
  finite-dimensional spaces   We prove extension-dimensional versions of finite dimensional selection and
approximation theorems. As applications, we obtain several results on extension
dimension.

18
The categories of this paper are: econ
23
The categories of this paper are: solv-int
37
The categories of this paper are: supr-con
31
The categories of this paper are: ao-sci
10
The categories of this paper are: q-bio
26
The categories of this paper are: bayes-an
15
The categories of this paper are: nucl-ex
0
The categories of this paper are: hep-ph
27
The categories of this paper are: comp-gas
17
The categories of this paper are: q-fin
20
The categories of this paper are: acc-phys
34
The categories of this paper are: chem-ph
22
The categories of this paper are: chao-dyn
1
The categories of this paper are: cs
32
The categories of this paper are: atom-ph
30
The categories of this paper are: q-alg