Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Well-posedness and H(div)-conforming finite element approximation of a
  linearised model for inviscid incompressible flow   We consider a linearised model of incompressible inviscid flow. Using a
regularisation based on the Hodge Laplacian we prove existence and uniqueness
of weak solutions for smooth domains. The model problem is then discretised
using H(div)-conforming finite element methods, for which we prove error
estimates for the velocity approximation in the $L^2$-norm of order
$O(h^{k+\frac12})$. We also prove error estimates for the pressure error in the
$L^2$-norm.

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The categories of this paper are: adap-org
27
The categories of this paper are: comp-gas
6
The categories of this paper are: astro-ph
18
The categories of this paper are: econ
33
The categories of this paper are: plasm-ph
16
The categories of this paper are: stat
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The categories of this paper are: solv-int
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The categories of this paper are: eess
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The categories of this paper are: dg-ga
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The categories of this paper are: nucl-ex
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The categories of this paper are: patt-sol
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The categories of this paper are: acc-phys
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The categories of this paper are: q-alg
3
The categories of this paper are: physics
37
The categories of this paper are: supr-con
35
The categories of this paper are: mtrl-th