Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Infintesimals in a Recursively Enumerable Prime Model   Using methods developed by Robinson, we find a complete theory suitable for a
first order description of infintesimal neighborhoods. We use this to construct
a specialisation having universal properties and to find a recursively
enumerable model in which the algebraic version of Bezout's theorem is provable
by non-standard methods.

3
The categories of this paper are: physics
8
The categories of this paper are: hep-ex
23
The categories of this paper are: solv-int
15
The categories of this paper are: nucl-ex
27
The categories of this paper are: comp-gas
31
The categories of this paper are: ao-sci
6
The categories of this paper are: astro-ph
24
The categories of this paper are: dg-ga
36
The categories of this paper are: cmp-lg
1
The categories of this paper are: cs
0
The categories of this paper are: hep-ph
9
The categories of this paper are: nlin
29
The categories of this paper are: funct-an
4
The categories of this paper are: cond-mat
33
The categories of this paper are: plasm-ph
21
The categories of this paper are: adap-org