Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the use of the variable change w=exp(u) to establish novel integral
  representations of the Riemann zeta(s,a) -function, incomplete gamma-
  function, confluent hypergeometric Phi-function and beta function   The variable change w=exp(u) is applied to establish novel integral
representations of the incomplete gamma-function, hypergeometric
F-function,confluent hypergeometric /Phi-function and beta-function, and to
analyze these functionsas as well as the Riemann /zeta(s,a)-function. In
particular, using these representations we give a pedagogically instructive
proof of the well known approximate functional relation for the Riemann
/zeta-function and derive Hurwitz representation of the /zeta(s,a)-function.

18
The categories of this paper are: econ
25
The categories of this paper are: patt-sol
14
The categories of this paper are: math-ph
36
The categories of this paper are: cmp-lg
15
The categories of this paper are: nucl-ex
3
The categories of this paper are: physics
6
The categories of this paper are: astro-ph
35
The categories of this paper are: mtrl-th
11
The categories of this paper are: hep-lat
20
The categories of this paper are: acc-phys
9
The categories of this paper are: nlin
1
The categories of this paper are: cs
34
The categories of this paper are: chem-ph
17
The categories of this paper are: q-fin
0
The categories of this paper are: hep-ph
27
The categories of this paper are: comp-gas