Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Line Integral solution of Hamiltonian PDEs   In this paper, we report about recent findings in the numerical solution of
Hamiltonian Partial Differential Equations (PDEs), by using energy-conserving
line integral methods in the Hamiltonian Boundary Value Methods (HBVMs) class.
In particular, we consider the semilinear wave equation, the nonlinear
Schr\"odinger equation, and the Korteweg-de Vries equation, to illustrate the
main features of this novel approach.

5
The categories of this paper are: gr-qc
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The categories of this paper are: q-alg
32
The categories of this paper are: atom-ph
1
The categories of this paper are: cs
22
The categories of this paper are: chao-dyn
33
The categories of this paper are: plasm-ph
0
The categories of this paper are: hep-ph
34
The categories of this paper are: chem-ph
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The categories of this paper are: hep-th
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The categories of this paper are: physics
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The categories of this paper are: mtrl-th
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The categories of this paper are: alg-geom
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The categories of this paper are: ao-sci
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The categories of this paper are: cond-mat
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The categories of this paper are: q-fin
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The categories of this paper are: comp-gas