Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Grassmannian Estimation   This paper discusses the family of distributions on the Grassmannian of the
linear span of r central gaussian vectors parametrized by the covariance
matrix. Our main result is an existence and uniqueness criterion for the
maximum likelihood estimate of a sample.

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The categories of this paper are: hep-ph
27
The categories of this paper are: comp-gas
1
The categories of this paper are: cs
30
The categories of this paper are: q-alg
6
The categories of this paper are: astro-ph
28
The categories of this paper are: alg-geom
21
The categories of this paper are: adap-org
37
The categories of this paper are: supr-con
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
3
The categories of this paper are: physics
22
The categories of this paper are: chao-dyn
31
The categories of this paper are: ao-sci
24
The categories of this paper are: dg-ga
9
The categories of this paper are: nlin