Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the approximation of real powers of sparse, infinite, bounded and
  Hermitian matrices   We describe a way to approximate the matrix elements of a real power $\alpha$
of a positive (for $\alpha \ge 0$) or non-negative (for $\alpha \in
\mathbb{R}$), infinite, bounded, sparse and Hermitian matrix $W$. The
approximation uses only a finite part of the matrix $W$.

8
The categories of this paper are: hep-ex
21
The categories of this paper are: adap-org
7
The categories of this paper are: hep-th
6
The categories of this paper are: astro-ph
35
The categories of this paper are: mtrl-th
23
The categories of this paper are: solv-int
27
The categories of this paper are: comp-gas
16
The categories of this paper are: stat
4
The categories of this paper are: cond-mat
9
The categories of this paper are: nlin
22
The categories of this paper are: chao-dyn
34
The categories of this paper are: chem-ph
30
The categories of this paper are: q-alg
11
The categories of this paper are: hep-lat
13
The categories of this paper are: quant-ph
10
The categories of this paper are: q-bio