Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: An elementary purely algebraic approach to generalized functions and
  operational calculus   The space of Schwartz distributions of finite order is represented as a
factor space of the space of, what we call, Mikusinski functions. The point of
Mikusinski functions is that they admit a multiplication by convergent Laurent
series. It is shown that this multiplication provides a natural simple basis
for Heaviside's operational calculus.

15
The categories of this paper are: nucl-ex
24
The categories of this paper are: dg-ga
17
The categories of this paper are: q-fin
37
The categories of this paper are: supr-con
0
The categories of this paper are: hep-ph
7
The categories of this paper are: hep-th
25
The categories of this paper are: patt-sol
10
The categories of this paper are: q-bio
20
The categories of this paper are: acc-phys
32
The categories of this paper are: atom-ph
3
The categories of this paper are: physics
33
The categories of this paper are: plasm-ph
5
The categories of this paper are: gr-qc
28
The categories of this paper are: alg-geom
36
The categories of this paper are: cmp-lg
23
The categories of this paper are: solv-int