Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Four variants of theory of the second order phase transitions   Because of one-valued connection between the configurational entropy and the
order parameter it is possible to present the theory of the second order phase
transitions in terms of the configurational entropy. It is offered a variant of
theory, in which the Nernst theorem is obeyed. Within the framework of
heterogeneous model the phenomena of growth of level of fluctuations and their
correlations are analyzed at transition of critical point as competitions of
kinetic and relaxation processes in the conditions of proximity of two critical
points.

37
The categories of this paper are: supr-con
15
The categories of this paper are: nucl-ex
36
The categories of this paper are: cmp-lg
17
The categories of this paper are: q-fin
31
The categories of this paper are: ao-sci
26
The categories of this paper are: bayes-an
23
The categories of this paper are: solv-int
5
The categories of this paper are: gr-qc
13
The categories of this paper are: quant-ph
6
The categories of this paper are: astro-ph
35
The categories of this paper are: mtrl-th
24
The categories of this paper are: dg-ga
30
The categories of this paper are: q-alg
1
The categories of this paper are: cs
16
The categories of this paper are: stat
19
The categories of this paper are: eess