Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Sums of units in function fields   Let R be the ring of S-integers of an algebraic function field (in one
variable) over a perfect field, where S is finite and not empty. It is shown
that for every positive integer N there exist elements of R that can not be
written as a sum of at most N units.

21
The categories of this paper are: adap-org
12
The categories of this paper are: nucl-th
30
The categories of this paper are: q-alg
25
The categories of this paper are: patt-sol
18
The categories of this paper are: econ
27
The categories of this paper are: comp-gas
34
The categories of this paper are: chem-ph
35
The categories of this paper are: mtrl-th
11
The categories of this paper are: hep-lat
22
The categories of this paper are: chao-dyn
28
The categories of this paper are: alg-geom
32
The categories of this paper are: atom-ph
14
The categories of this paper are: math-ph
26
The categories of this paper are: bayes-an
9
The categories of this paper are: nlin
23
The categories of this paper are: solv-int