Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Intersection Graphs: An Introduction   Intersection graphs are very important in both theoretical as well as
application point of view. Depending on the geometrical representation,
different type of intersection graphs are defined. Among them interval,
circular-arc, permutation, trapezoid, chordal, disk, circle graphs are more
important. In this article, a brief introduction of each of these intersection
graphs is given. Some basic properties and algorithmic status of few problems
on these graphs are cited. This article will help to the beginners to start
work in this direction. Since the article contains a lot of information in a
compact form it is also useful for the expert researchers too.

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The categories of this paper are: atom-ph
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The categories of this paper are: math-ph
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The categories of this paper are: q-fin
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The categories of this paper are: cmp-lg
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The categories of this paper are: chao-dyn
6
The categories of this paper are: astro-ph
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The categories of this paper are: plasm-ph
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The categories of this paper are: dg-ga
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The categories of this paper are: cond-mat
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The categories of this paper are: solv-int
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The categories of this paper are: mtrl-th
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The categories of this paper are: gr-qc
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The categories of this paper are: nlin
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The categories of this paper are: econ
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The categories of this paper are: hep-th
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The categories of this paper are: eess