Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Fundamental groups of partial compactifications of arrangements and
  homology planes   Following our previous work, we develop an algorithm to compute a
presentation of the fundamental group of certain partial compactifications of
the complement of a complex arrangement of lines in the projective plane. It
applies, in particular, to homology planes arising from arrangements of lines.
This permits to determine the infinitude of the fundamental group of homology
planes of log-general type that may be the first examples of this type.

37
The categories of this paper are: supr-con
11
The categories of this paper are: hep-lat
34
The categories of this paper are: chem-ph
32
The categories of this paper are: atom-ph
7
The categories of this paper are: hep-th
30
The categories of this paper are: q-alg
26
The categories of this paper are: bayes-an
33
The categories of this paper are: plasm-ph
25
The categories of this paper are: patt-sol
3
The categories of this paper are: physics
6
The categories of this paper are: astro-ph
8
The categories of this paper are: hep-ex
29
The categories of this paper are: funct-an
10
The categories of this paper are: q-bio
20
The categories of this paper are: acc-phys
14
The categories of this paper are: math-ph