Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: There are More Than 2**(n/17) n-Letter Ternary Square-Free Words   We prove that the `connective constant' for ternary square-free words is at
least $2^{1/17} = 1.0416 ... $, improving on Brinkhuis and Brandenburg's lower
bounds of $2^{1/24}=1.0293 ...$ and $2^{1/22}=1.032 ...$ respectively. This is
the first improvement since 1983.

31
The categories of this paper are: ao-sci
28
The categories of this paper are: alg-geom
1
The categories of this paper are: cs
4
The categories of this paper are: cond-mat
30
The categories of this paper are: q-alg
9
The categories of this paper are: nlin
5
The categories of this paper are: gr-qc
11
The categories of this paper are: hep-lat
16
The categories of this paper are: stat
27
The categories of this paper are: comp-gas
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The categories of this paper are: eess
18
The categories of this paper are: econ
23
The categories of this paper are: solv-int
6
The categories of this paper are: astro-ph
3
The categories of this paper are: physics
21
The categories of this paper are: adap-org