Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: An Introduction to Multi-Point Flux (MPFA) and Stress (MPSA) Finite
  Volume Methods for Thermo-Poroelasticity   We give a unified introduction to the MPFA- and MPSA-type finite volume
methods for Darcy flow and poro-elasticity, applicable to general polyhedral
grids. This leads to a more systematic perspective of these methods than has
been exposed in previous texts, and we therefore refer to this discretization
family as the MPxA methods. We apply this MPxA framework to also define a
consistent finite-volume discretization of thermo-poro-elasticity. In order to
make the exposition accessible to a wide audience, we avoid much of the
technical notation which is used in the research literature, and compensate for
this by an expanded summary and literature review of the main properties of the
MPxA methods. We close the chapter by a section containing applications to
problems with complex geometries and non-linear physics.

5
The categories of this paper are: gr-qc
15
The categories of this paper are: nucl-ex
20
The categories of this paper are: acc-phys
10
The categories of this paper are: q-bio
29
The categories of this paper are: funct-an
18
The categories of this paper are: econ
33
The categories of this paper are: plasm-ph
3
The categories of this paper are: physics
13
The categories of this paper are: quant-ph
31
The categories of this paper are: ao-sci
22
The categories of this paper are: chao-dyn
7
The categories of this paper are: hep-th
4
The categories of this paper are: cond-mat
35
The categories of this paper are: mtrl-th
17
The categories of this paper are: q-fin
36
The categories of this paper are: cmp-lg