Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: An implicit integration factor method for a kind of spatial fractional
  diffusion equations   A kind of spatial fractional diffusion equations in this paper are studied.
Firstly, an L1 formula is employed for the spatial discretization of the
equations. Then, a second order scheme is derived based on the resulting
semi-discrete ordinary differential system by using the implicit integration
factor method, which is a class of efficient semi-implicit temporal scheme.
Numerical results show that the proposed scheme is accurate even for the
discontinuous coefficients.

27
The categories of this paper are: comp-gas
15
The categories of this paper are: nucl-ex
25
The categories of this paper are: patt-sol
6
The categories of this paper are: astro-ph
16
The categories of this paper are: stat
23
The categories of this paper are: solv-int
3
The categories of this paper are: physics
9
The categories of this paper are: nlin
32
The categories of this paper are: atom-ph
20
The categories of this paper are: acc-phys
17
The categories of this paper are: q-fin
11
The categories of this paper are: hep-lat
21
The categories of this paper are: adap-org
4
The categories of this paper are: cond-mat
14
The categories of this paper are: math-ph
22
The categories of this paper are: chao-dyn