Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Spacetime topology from causality   We prove that a globally hyperbolic spacetime with its causality relation is
a bicontinuous poset whose interval topology is the manifold topology. This
provides an abstract mathematical setting in which one can study causality
independent of geometry and differentiable structure.

26
The categories of this paper are: bayes-an
0
The categories of this paper are: hep-ph
16
The categories of this paper are: stat
15
The categories of this paper are: nucl-ex
1
The categories of this paper are: cs
28
The categories of this paper are: alg-geom
37
The categories of this paper are: supr-con
9
The categories of this paper are: nlin
6
The categories of this paper are: astro-ph
13
The categories of this paper are: quant-ph
18
The categories of this paper are: econ
35
The categories of this paper are: mtrl-th
24
The categories of this paper are: dg-ga
23
The categories of this paper are: solv-int
30
The categories of this paper are: q-alg
34
The categories of this paper are: chem-ph