Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: How to recognize a nearly-flat-band ferromagnet by means of
  thermodynamic measurements?   We make an attempt at unveiling the thermodynamic "signature" of a specific
class of electronic systems, the so called nearly-flat-band paramagnets and
ferromagnets that can theoretically be described by appropriate versions of the
Hubbard model.

30
The categories of this paper are: q-alg
15
The categories of this paper are: nucl-ex
26
The categories of this paper are: bayes-an
16
The categories of this paper are: stat
34
The categories of this paper are: chem-ph
0
The categories of this paper are: hep-ph
13
The categories of this paper are: quant-ph
32
The categories of this paper are: atom-ph
36
The categories of this paper are: cmp-lg
35
The categories of this paper are: mtrl-th
3
The categories of this paper are: physics
25
The categories of this paper are: patt-sol
18
The categories of this paper are: econ
11
The categories of this paper are: hep-lat
22
The categories of this paper are: chao-dyn
7
The categories of this paper are: hep-th