Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On a certain extension of the Riemann-Liouville fractional derivative
  operator   The main aim of this present paper is to present a new extension of the
fractional derivative operator by using the extension of Beta function recently
defined by Shadab et al.[19]. Moreover, we establish some results related to
the newly defined modified fractional derivative operator such as Mellin
transform and relations to extended hypergeometric and Appell's function via
generating functions.

27
The categories of this paper are: comp-gas
32
The categories of this paper are: atom-ph
11
The categories of this paper are: hep-lat
5
The categories of this paper are: gr-qc
35
The categories of this paper are: mtrl-th
18
The categories of this paper are: econ
10
The categories of this paper are: q-bio
29
The categories of this paper are: funct-an
7
The categories of this paper are: hep-th
19
The categories of this paper are: eess
8
The categories of this paper are: hep-ex
36
The categories of this paper are: cmp-lg
16
The categories of this paper are: stat
37
The categories of this paper are: supr-con
3
The categories of this paper are: physics
17
The categories of this paper are: q-fin