Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Modeling complex points up to isotopy   In this paper we examine the structure of complex points of real 4-manifolds
embedded into complex 3-manifolds up to isotopy. We show that there are only
two types of complex points up to isotopy and as a consequence, show that any
such embedding can be deformed by isotopy to a manifold having 2-complete
neighborhood basis.

29
The categories of this paper are: funct-an
34
The categories of this paper are: chem-ph
22
The categories of this paper are: chao-dyn
23
The categories of this paper are: solv-int
20
The categories of this paper are: acc-phys
13
The categories of this paper are: quant-ph
28
The categories of this paper are: alg-geom
16
The categories of this paper are: stat
36
The categories of this paper are: cmp-lg
26
The categories of this paper are: bayes-an
35
The categories of this paper are: mtrl-th
10
The categories of this paper are: q-bio
33
The categories of this paper are: plasm-ph
17
The categories of this paper are: q-fin
15
The categories of this paper are: nucl-ex
4
The categories of this paper are: cond-mat