Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Global Existence with Small Initial Data for Three-Dimensional
  Incompressible Isotropic Viscoelastic Materials   Global existence for a system of nonlinear partial differential equations
(PDE) modeling an isotropic incompressible viscoelastic material is proved. The
structure of the PDE is derived through constitutive assumptions on the
material. Restriction on the size of the initial displacement and velocity for
the model is specified independent of the size of the viscosity of the
material. The proof of global existence combines use of vector fields, local
energy decay estimates, generalized Sobolev inequalities, and hyperbolic energy
estimates.

25
The categories of this paper are: patt-sol
18
The categories of this paper are: econ
27
The categories of this paper are: comp-gas
4
The categories of this paper are: cond-mat
14
The categories of this paper are: math-ph
3
The categories of this paper are: physics
13
The categories of this paper are: quant-ph
26
The categories of this paper are: bayes-an
5
The categories of this paper are: gr-qc
34
The categories of this paper are: chem-ph
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The categories of this paper are: solv-int
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The categories of this paper are: dg-ga
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The categories of this paper are: cmp-lg
16
The categories of this paper are: stat
11
The categories of this paper are: hep-lat
31
The categories of this paper are: ao-sci