Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Observational evidence of fractality in the large-scale distribution of
  galaxies   Using a sample of 133 991 galaxies distributed in the sky region $100^{\circ}
<\alpha<270^{\circ}$ and $7^{\circ}<\delta<65^{\circ}$, extracted from the SDSS
NASA/AMES Value Added Galaxy Catalog (AMES-VAGC), we estimate the fractal
dimension using two different methods. First, using an algorithm to estimate
the correlation dimension. The second method, in a novel approach, creates a
graph from the data and estimates the graph dimension purely from connectivity
information. In both methods we found a dimension $D\approx 2$ in scales below
20 Mpc, which agrees with previous works. This result shows the non-homogeneity
of galaxies distribution at certain scales.

37
The categories of this paper are: supr-con
15
The categories of this paper are: nucl-ex
7
The categories of this paper are: hep-th
36
The categories of this paper are: cmp-lg
2
The categories of this paper are: math
0
The categories of this paper are: hep-ph
13
The categories of this paper are: quant-ph
4
The categories of this paper are: cond-mat
19
The categories of this paper are: eess
21
The categories of this paper are: adap-org
18
The categories of this paper are: econ
30
The categories of this paper are: q-alg
25
The categories of this paper are: patt-sol
29
The categories of this paper are: funct-an
22
The categories of this paper are: chao-dyn
24
The categories of this paper are: dg-ga