Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Sectional Curvature Bounds in Gravity: Regularisation of the
  Schwarzschild Singularity   A general geometrical scheme is presented for the construction of novel
classical gravity theories whose solutions obey two-sided bounds on the
sectional curvatures along certain subvarieties of the Grassmannian of
two-planes. The motivation to study sectional curvature bounds comes from their
equivalence to bounds on the acceleration between nearby geodesics. A universal
minimal length scale is a necessary ingredient of the construction, and an
application of the kinematical framework to static, spherically symmetric
spacetimes shows drastic differences to the Schwarzschild solution of general
relativity by the exclusion of spacelike singularities.

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The categories of this paper are: physics
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The categories of this paper are: nucl-th
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The categories of this paper are: cond-mat
20
The categories of this paper are: acc-phys
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The categories of this paper are: astro-ph
0
The categories of this paper are: hep-ph
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The categories of this paper are: chao-dyn
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The categories of this paper are: cs
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The categories of this paper are: hep-ex
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The categories of this paper are: solv-int
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The categories of this paper are: dg-ga
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The categories of this paper are: math
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The categories of this paper are: patt-sol
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The categories of this paper are: cmp-lg
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The categories of this paper are: nucl-ex
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The categories of this paper are: chem-ph