Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Dirac operator on collapsing S^1-bundles   We study the behavior of the spectrum of the Dirac operator on collapsing
S^1-bundles. Convergent eigenvalues will exist if and only if the spin
structure is projectable.

28
The categories of this paper are: alg-geom
34
The categories of this paper are: chem-ph
37
The categories of this paper are: supr-con
12
The categories of this paper are: nucl-th
15
The categories of this paper are: nucl-ex
3
The categories of this paper are: physics
1
The categories of this paper are: cs
4
The categories of this paper are: cond-mat
8
The categories of this paper are: hep-ex
31
The categories of this paper are: ao-sci
6
The categories of this paper are: astro-ph
32
The categories of this paper are: atom-ph
26
The categories of this paper are: bayes-an
0
The categories of this paper are: hep-ph
13
The categories of this paper are: quant-ph
11
The categories of this paper are: hep-lat