Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the entropy and letter frequencies of powerfree words   We review the recent progress in the investigation of powerfree words, with
particular emphasis on binary cubefree and ternary squarefree words. Besides
various bounds on the entropy, we provide bounds on letter frequencies and
consider their empirical distribution obtained by an enumeration of binary
cubefree words up to length 80.

15
The categories of this paper are: nucl-ex
0
The categories of this paper are: hep-ph
34
The categories of this paper are: chem-ph
33
The categories of this paper are: plasm-ph
25
The categories of this paper are: patt-sol
22
The categories of this paper are: chao-dyn
7
The categories of this paper are: hep-th
9
The categories of this paper are: nlin
29
The categories of this paper are: funct-an
19
The categories of this paper are: eess
17
The categories of this paper are: q-fin
21
The categories of this paper are: adap-org
18
The categories of this paper are: econ
16
The categories of this paper are: stat
12
The categories of this paper are: nucl-th
13
The categories of this paper are: quant-ph