Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Umbral presentations for polynomial sequences   Using random variables as motivation, this paper presents an exposition of
the formalisms developed by Rota and Taylor for the classical umbral calculus.
A variety of examples are presented, culminating in several descriptions of
sequences of binomial type in terms of umbral polynomials.

21
The categories of this paper are: adap-org
24
The categories of this paper are: dg-ga
0
The categories of this paper are: hep-ph
32
The categories of this paper are: atom-ph
7
The categories of this paper are: hep-th
6
The categories of this paper are: astro-ph
5
The categories of this paper are: gr-qc
15
The categories of this paper are: nucl-ex
1
The categories of this paper are: cs
23
The categories of this paper are: solv-int
4
The categories of this paper are: cond-mat
36
The categories of this paper are: cmp-lg
31
The categories of this paper are: ao-sci
22
The categories of this paper are: chao-dyn
19
The categories of this paper are: eess
29
The categories of this paper are: funct-an