Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The bulk-dislocation correspondence for weak topological insulators on
  screw-dislocated lattices   A weak topological insulator in dimension $3$ is known to have a
topologically protected gapless mode along the screw dislocation. In this paper
we formulate and prove this fact with the language of C*-algebra K-theory. The
proof is based on the coarse index theory of the helical surface.

26
The categories of this paper are: bayes-an
28
The categories of this paper are: alg-geom
34
The categories of this paper are: chem-ph
3
The categories of this paper are: physics
0
The categories of this paper are: hep-ph
17
The categories of this paper are: q-fin
4
The categories of this paper are: cond-mat
27
The categories of this paper are: comp-gas
35
The categories of this paper are: mtrl-th
19
The categories of this paper are: eess
9
The categories of this paper are: nlin
21
The categories of this paper are: adap-org
24
The categories of this paper are: dg-ga
31
The categories of this paper are: ao-sci
11
The categories of this paper are: hep-lat
32
The categories of this paper are: atom-ph