Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Elementary methods for evaluating Jordan's sums and analogous Euler's
  type sums and for setting a sigma sum theorem   We give a complete and elementary proofs of "Jordan's sums" and study Euler's
types sums. In particular we give a formula for the sum of series with same
weight, which is similar to this one of classical 2-Euler's sums.

8
The categories of this paper are: hep-ex
11
The categories of this paper are: hep-lat
30
The categories of this paper are: q-alg
22
The categories of this paper are: chao-dyn
23
The categories of this paper are: solv-int
34
The categories of this paper are: chem-ph
9
The categories of this paper are: nlin
33
The categories of this paper are: plasm-ph
5
The categories of this paper are: gr-qc
15
The categories of this paper are: nucl-ex
18
The categories of this paper are: econ
12
The categories of this paper are: nucl-th
27
The categories of this paper are: comp-gas
20
The categories of this paper are: acc-phys
37
The categories of this paper are: supr-con
24
The categories of this paper are: dg-ga