Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Asymptotically Flat Initial Data for Gravitational Wave Spacetimes,
  Conformal Compactification and Conformal Symmetry   We study the utilization of conformal compactification within the conformal
approach to solving the constraints of general relativity for asymptotically
flat initial data. After a general discussion of the framework, particular
attention is paid to simplifications that arise when restricting to a class of
initial data which have a certain $U(1)\times U(1)$ conformal symmetry.

22
The categories of this paper are: chao-dyn
34
The categories of this paper are: chem-ph
23
The categories of this paper are: solv-int
9
The categories of this paper are: nlin
28
The categories of this paper are: alg-geom
25
The categories of this paper are: patt-sol
11
The categories of this paper are: hep-lat
35
The categories of this paper are: mtrl-th
7
The categories of this paper are: hep-th
15
The categories of this paper are: nucl-ex
26
The categories of this paper are: bayes-an
21
The categories of this paper are: adap-org
10
The categories of this paper are: q-bio
12
The categories of this paper are: nucl-th
13
The categories of this paper are: quant-ph
20
The categories of this paper are: acc-phys