Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A random walk approximation to fractional Brownian motion   We present a random walk approximation to fractional Brownian motion where
the increments of the fractional random walk are defined as a weighted sum of
the past increments of a Bernoulli random walk.

21
The categories of this paper are: adap-org
3
The categories of this paper are: physics
0
The categories of this paper are: hep-ph
36
The categories of this paper are: cmp-lg
22
The categories of this paper are: chao-dyn
28
The categories of this paper are: alg-geom
1
The categories of this paper are: cs
9
The categories of this paper are: nlin
34
The categories of this paper are: chem-ph
37
The categories of this paper are: supr-con
15
The categories of this paper are: nucl-ex
5
The categories of this paper are: gr-qc
13
The categories of this paper are: quant-ph
25
The categories of this paper are: patt-sol
11
The categories of this paper are: hep-lat
24
The categories of this paper are: dg-ga