Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Numerical Solution of Differential Equations in Irregular Plane Regions
  Using Quality Structured Convex Grids   The variational grid generation method is a powerful tool for generating
structured convex grids on irregular simply connected domains whose boundary is
a polygonal Jordan curve. Several examples that show the accuracy of a
difference approximation to the solution of a Poisson equation using these kind
of structured grids have been recently reported. In this paper, we compare the
accuracy of the numerical solution calculated by applying those structured
grids with finite differences against the the solution obtained with
Delaunay-like triangulations on irregular regions.

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The categories of this paper are: astro-ph
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The categories of this paper are: quant-ph
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The categories of this paper are: eess
35
The categories of this paper are: mtrl-th
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The categories of this paper are: nlin
17
The categories of this paper are: q-fin
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The categories of this paper are: math-ph
37
The categories of this paper are: supr-con
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The categories of this paper are: hep-th
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The categories of this paper are: plasm-ph
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The categories of this paper are: hep-ex
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The categories of this paper are: stat
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The categories of this paper are: funct-an
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The categories of this paper are: q-alg
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The categories of this paper are: nucl-th
36
The categories of this paper are: cmp-lg