Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Discrete scale invariance, and its logarithmic extension   It is known that discrete scale invariance leads to log-periodic corrections
to scaling. We investigate the correlations of a system with discrete scale
symmetry, discuss in detail possible extension of this symmetry such as
translation and inversion, and find general forms for correlation functions.

10
The categories of this paper are: q-bio
6
The categories of this paper are: astro-ph
37
The categories of this paper are: supr-con
27
The categories of this paper are: comp-gas
9
The categories of this paper are: nlin
3
The categories of this paper are: physics
2
The categories of this paper are: math
24
The categories of this paper are: dg-ga
17
The categories of this paper are: q-fin
26
The categories of this paper are: bayes-an
19
The categories of this paper are: eess
33
The categories of this paper are: plasm-ph
12
The categories of this paper are: nucl-th
35
The categories of this paper are: mtrl-th
14
The categories of this paper are: math-ph
25
The categories of this paper are: patt-sol