Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A New Result on the Dynamical Symmetry of Spherical Collapse   A dynamical symmetry for spherical collapse has been studied using a linear
transformation of the initial data set (mass and kinetic energy function) and
the area radius. With proper choice of the initial area radius, the evolution
as well as the physical parameters namely energy density and shear remain
invariant both initially and at any time instant. Finally, it is found that the
final outcome of collapse depends on the initial choice of the area radius.

9
The categories of this paper are: nlin
8
The categories of this paper are: hep-ex
23
The categories of this paper are: solv-int
11
The categories of this paper are: hep-lat
14
The categories of this paper are: math-ph
21
The categories of this paper are: adap-org
0
The categories of this paper are: hep-ph
30
The categories of this paper are: q-alg
37
The categories of this paper are: supr-con
1
The categories of this paper are: cs
29
The categories of this paper are: funct-an
4
The categories of this paper are: cond-mat
31
The categories of this paper are: ao-sci
7
The categories of this paper are: hep-th
27
The categories of this paper are: comp-gas
18
The categories of this paper are: econ