Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Thermodynamical instability of black holes   In contrast to Hawking radiation of black hole with a given spacetime
structure, we consider a competitive transition due to a heat transfer from a
hotter inner horizon to a colder outer horizon of Kerr black hole, that results
in a stable thermodynamical state of extremal black hole. In this process, by
supposing an emission of gravitational quanta, we calculate the mass of
extremal black hole in the final state of transition.

27
The categories of this paper are: comp-gas
29
The categories of this paper are: funct-an
31
The categories of this paper are: ao-sci
11
The categories of this paper are: hep-lat
23
The categories of this paper are: solv-int
8
The categories of this paper are: hep-ex
26
The categories of this paper are: bayes-an
16
The categories of this paper are: stat
28
The categories of this paper are: alg-geom
25
The categories of this paper are: patt-sol
15
The categories of this paper are: nucl-ex
10
The categories of this paper are: q-bio
12
The categories of this paper are: nucl-th
35
The categories of this paper are: mtrl-th
14
The categories of this paper are: math-ph
19
The categories of this paper are: eess