Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Top Quark Cross-Section Measurements at the Tevatron   Run II of the Tevatron collider at Fermilab is well under way and data
samples larger than those of Run I are at hand. In this contribution I
summarize the current status of cross-section measurements for top-quark pair
production at the CDF and D0 experiments.

28
The categories of this paper are: alg-geom
4
The categories of this paper are: cond-mat
32
The categories of this paper are: atom-ph
1
The categories of this paper are: cs
31
The categories of this paper are: ao-sci
17
The categories of this paper are: q-fin
5
The categories of this paper are: gr-qc
25
The categories of this paper are: patt-sol
12
The categories of this paper are: nucl-th
34
The categories of this paper are: chem-ph
10
The categories of this paper are: q-bio
11
The categories of this paper are: hep-lat
22
The categories of this paper are: chao-dyn
23
The categories of this paper are: solv-int
15
The categories of this paper are: nucl-ex
2
The categories of this paper are: math