Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Determination of the Metric by the Weyl and Energy-Momentum Tensors   This brief paper investigates the consequences for the metric tensor of
space-time when the Weyl tensor (in its conformally invariant form) and the
energy-momentum tensor is specified. It is shown that, unless rather special
conditions hold, the metric is uniquely determined up to a constant conformal
factor.

17
The categories of this paper are: q-fin
20
The categories of this paper are: acc-phys
36
The categories of this paper are: cmp-lg
4
The categories of this paper are: cond-mat
33
The categories of this paper are: plasm-ph
12
The categories of this paper are: nucl-th
30
The categories of this paper are: q-alg
13
The categories of this paper are: quant-ph
22
The categories of this paper are: chao-dyn
11
The categories of this paper are: hep-lat
9
The categories of this paper are: nlin
21
The categories of this paper are: adap-org
26
The categories of this paper are: bayes-an
32
The categories of this paper are: atom-ph
35
The categories of this paper are: mtrl-th
3
The categories of this paper are: physics