Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A nested Schur complement solver with mesh-independent convergence for
  the time domain photonics modeling   A nested Schur complement solver is proposed for iterative solution of linear
systems arising in exponential and implicit time integration of the Maxwell
equations with perfectly matched layer (PML) nonreflecting boundary conditions.
These linear systems are the so-called double saddle point systems whose
structure is handled by the Schur complement solver in a nested, two-level
fashion. The solver is demonstrated to have a mesh-independent convergence at
the outer level, whereas the inner level system is of elliptic type and thus
can be treated efficiently by a variety of solvers.

8
The categories of this paper are: hep-ex
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The categories of this paper are: hep-ph
7
The categories of this paper are: hep-th
24
The categories of this paper are: dg-ga
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The categories of this paper are: astro-ph
17
The categories of this paper are: q-fin
14
The categories of this paper are: math-ph
36
The categories of this paper are: cmp-lg
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The categories of this paper are: q-bio
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The categories of this paper are: hep-lat
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The categories of this paper are: chao-dyn
19
The categories of this paper are: eess
20
The categories of this paper are: acc-phys
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The categories of this paper are: chem-ph
21
The categories of this paper are: adap-org
37
The categories of this paper are: supr-con