Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A new pair of non-cobordant surface-links which the Orr invariant, the
  Cochran sequence, the Sato-Levine invariant, and the alinking number cannot
  find   We submit a new way to detect pairs of non-cobordant surface-links. We find a
new example of a pair of non-cobordant surface-links with the following
properties: Orr invariant, Cochran sequence, Sato-Levine invariant, the
alinking number and one of Stallings's theorems cannot distinguish them.
However our new way can distinguish them.

20
The categories of this paper are: acc-phys
13
The categories of this paper are: quant-ph
17
The categories of this paper are: q-fin
11
The categories of this paper are: hep-lat
23
The categories of this paper are: solv-int
29
The categories of this paper are: funct-an
5
The categories of this paper are: gr-qc
14
The categories of this paper are: math-ph
37
The categories of this paper are: supr-con
27
The categories of this paper are: comp-gas
16
The categories of this paper are: stat
7
The categories of this paper are: hep-th
24
The categories of this paper are: dg-ga
36
The categories of this paper are: cmp-lg
18
The categories of this paper are: econ
6
The categories of this paper are: astro-ph