Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On overtwisted contact surgeries   In this note, we obtain a new result concluding when contact (+1/n)-surgery
is overtwisted. We give a counterexample to a conjecture by James Conway on
overtwistedness of manifolds obtained by contact surgery. We list some problems
related to the contact surgery.

20
The categories of this paper are: acc-phys
6
The categories of this paper are: astro-ph
23
The categories of this paper are: solv-int
7
The categories of this paper are: hep-th
10
The categories of this paper are: q-bio
12
The categories of this paper are: nucl-th
33
The categories of this paper are: plasm-ph
36
The categories of this paper are: cmp-lg
0
The categories of this paper are: hep-ph
11
The categories of this paper are: hep-lat
32
The categories of this paper are: atom-ph
34
The categories of this paper are: chem-ph
29
The categories of this paper are: funct-an
31
The categories of this paper are: ao-sci
18
The categories of this paper are: econ
25
The categories of this paper are: patt-sol