Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Geodesic connectedness and conjugate points in GRW spacetimes   Given two points of a Generalized Robertson-Walker spacetime, the existence,
multiplicity and causal character of geodesic connecting them is characterized.
Conjugate points of such geodesics are related to conjugate points of geodesics
on the fiber, and Morse-type relations are obtained. Applications to
bidimensional spacetimes and to GRW spacetimes satisfying the timelike
convergence condition are also found.

29
The categories of this paper are: funct-an
31
The categories of this paper are: ao-sci
28
The categories of this paper are: alg-geom
12
The categories of this paper are: nucl-th
26
The categories of this paper are: bayes-an
14
The categories of this paper are: math-ph
17
The categories of this paper are: q-fin
9
The categories of this paper are: nlin
34
The categories of this paper are: chem-ph
16
The categories of this paper are: stat
0
The categories of this paper are: hep-ph
33
The categories of this paper are: plasm-ph
1
The categories of this paper are: cs
23
The categories of this paper are: solv-int
30
The categories of this paper are: q-alg
20
The categories of this paper are: acc-phys