Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Two different fractional Stefan problems which are convergent to the
  same classical Stefan problem   Two fractional Stefan problems are considered by using Riemann-Liouville and
Caputo derivatives of order $\alpha \in (0,1)$ such that in the limit case
($\alpha =1$) both problems coincide with the same classical Stefan problem.
For the one and the other problem, explicit solutions in terms of the Wright
functions are presented. We prove that these solutions are different even
though they converge, when $\alpha \nearrow 1$, to the same classical solution.
This result also shows that some limits are not commutative when fractional
derivatives are used.

8
The categories of this paper are: hep-ex
3
The categories of this paper are: physics
36
The categories of this paper are: cmp-lg
10
The categories of this paper are: q-bio
20
The categories of this paper are: acc-phys
23
The categories of this paper are: solv-int
16
The categories of this paper are: stat
9
The categories of this paper are: nlin
35
The categories of this paper are: mtrl-th
34
The categories of this paper are: chem-ph
12
The categories of this paper are: nucl-th
24
The categories of this paper are: dg-ga
21
The categories of this paper are: adap-org
5
The categories of this paper are: gr-qc
37
The categories of this paper are: supr-con
18
The categories of this paper are: econ