Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Comment on ``Strength and genericity of singularities in Tolman-Bondi-de
  Sitter collapse'' and a note on central singularities   It has been claimed that the Lemaitre-Tolman-Bondi-de Sitter solution always
admits future-pointing radial time-like geodesics emerging from the
shell-focussing singularity, regardless of the nature of the (regular) initial
data. This is despite the fact that some data rule out the emergence of future
pointing radial null geodesics. We correct this claim and show that in general
in spherical symmetry, the absence of radial null geodesics emerging from a
central singularity is sufficient to prove that the singularity is censored.

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The categories of this paper are: hep-th
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The categories of this paper are: nucl-ex
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The categories of this paper are: acc-phys
2
The categories of this paper are: math
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The categories of this paper are: q-bio
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The categories of this paper are: supr-con
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The categories of this paper are: quant-ph
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The categories of this paper are: patt-sol
28
The categories of this paper are: alg-geom
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The categories of this paper are: econ
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The categories of this paper are: q-fin
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The categories of this paper are: cs
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The categories of this paper are: cond-mat
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The categories of this paper are: chao-dyn
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The categories of this paper are: funct-an
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The categories of this paper are: hep-ex