Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: System of kinematical conservation laws (KCL) a review article   In a wide range of physical phenomena, we find propagating surfaces {\Omega}t
which need mathematical treatment. In this article, we review the theory of the
system of kinematical conservation laws (KCL), which govern the evolution of
these surfaces and have been developed by the second author and his
collaborators. KCL are the most general equations in conservation form,
governing the evolution of {\Omega}t with physically realistic singularities. A
very special type of singularity is a kink, which is a point on {\Omega}t when
{\Omega}t is a curve in R2 andisacurveon{\Omega}t when{\Omega}t isasurfaceinR3.
Acrossakinkthenormalnto{\Omega}t and the normal velocity m on {\Omega}t are
discontinuous. The main aim of this article is to identify density of the
conserved variable and the flux for the KCL which we did not do earlier. The
presentation of this article is like that in a popular article, which which
aims at non-experts in the field.

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The categories of this paper are: plasm-ph
19
The categories of this paper are: eess
9
The categories of this paper are: nlin
6
The categories of this paper are: astro-ph
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The categories of this paper are: solv-int
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The categories of this paper are: chem-ph
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The categories of this paper are: cmp-lg
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The categories of this paper are: atom-ph
4
The categories of this paper are: cond-mat
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: mtrl-th
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The categories of this paper are: funct-an
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The categories of this paper are: nucl-ex
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The categories of this paper are: alg-geom
8
The categories of this paper are: hep-ex