Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A simple PTAS for Weighted Matroid Matching on Strongly Base Orderable
  Matroids   We give a simple polynomial time approximation scheme for the weighted
matroid matching problem on strongly base orderable matroids. We also show that
even the unweighted version of this problem is NP-complete and not in
oracle-coNP.

22
The categories of this paper are: chao-dyn
23
The categories of this paper are: solv-int
2
The categories of this paper are: math
36
The categories of this paper are: cmp-lg
11
The categories of this paper are: hep-lat
35
The categories of this paper are: mtrl-th
9
The categories of this paper are: nlin
27
The categories of this paper are: comp-gas
34
The categories of this paper are: chem-ph
6
The categories of this paper are: astro-ph
18
The categories of this paper are: econ
5
The categories of this paper are: gr-qc
15
The categories of this paper are: nucl-ex
14
The categories of this paper are: math-ph
16
The categories of this paper are: stat
12
The categories of this paper are: nucl-th