Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Formes normales pour les champs conformes pseudo-riemanniens   We establish normal forms for conformal vector fields on pseudo-Riemannian
manifolds in the neighborhood of a singularity. For real-analytic Lorentzian
manifolds, we show that the vector field is analytically linearizable or the
manifold is conformally flat. In either case, the vector field is locally
conjugate to a normal form on a model space. For smooth metrics of general
signature, we obtain the analogous result under the additional assumption that
the differential of the flow at the fixed point is bounded.

25
The categories of this paper are: patt-sol
1
The categories of this paper are: cs
34
The categories of this paper are: chem-ph
23
The categories of this paper are: solv-int
0
The categories of this paper are: hep-ph
14
The categories of this paper are: math-ph
8
The categories of this paper are: hep-ex
19
The categories of this paper are: eess
12
The categories of this paper are: nucl-th
18
The categories of this paper are: econ
17
The categories of this paper are: q-fin
37
The categories of this paper are: supr-con
35
The categories of this paper are: mtrl-th
31
The categories of this paper are: ao-sci
28
The categories of this paper are: alg-geom
32
The categories of this paper are: atom-ph