Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Illusiveness of the problem of time   The essay is devoted to the problem of time in the context of quantum
cosmology, which acquires a philosophical level to date. At an example of the
minisuperspace model, we show that this problem is illusive in the sense that
it does not prevent to calculate mean values of the operators over the quantum
state of the universe. Contrariwise, the different approaches to the
description of these time-dependent mean values give similar results.

1
The categories of this paper are: cs
37
The categories of this paper are: supr-con
24
The categories of this paper are: dg-ga
23
The categories of this paper are: solv-int
2
The categories of this paper are: math
11
The categories of this paper are: hep-lat
21
The categories of this paper are: adap-org
12
The categories of this paper are: nucl-th
18
The categories of this paper are: econ
33
The categories of this paper are: plasm-ph
16
The categories of this paper are: stat
10
The categories of this paper are: q-bio
0
The categories of this paper are: hep-ph
35
The categories of this paper are: mtrl-th
13
The categories of this paper are: quant-ph
34
The categories of this paper are: chem-ph