Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Self-Similar Perturbation Theory   A method is suggested for treating those complicated physical problems for
which exact solutions are not known but a few approximation terms of a
calculational algorithm can be derived. The method permits one to answer the
following rather delicate questions: What can be said about the convergence of
the calculational procedure when only a few its terms are available and how to
decide which of the initial approximations of the perturbative algorithm is
better, when several such initial approximations are possible? Definite answers
to these important questions become possible by employing the self-similar
perturbation theory. The novelty of this paper is in developing the stability
analysis based on the method of multipliers and in illustrating the efficiency
of this analysis by different quantum-mechanical problems.

20
The categories of this paper are: acc-phys
5
The categories of this paper are: gr-qc
19
The categories of this paper are: eess
28
The categories of this paper are: alg-geom
12
The categories of this paper are: nucl-th
10
The categories of this paper are: q-bio
23
The categories of this paper are: solv-int
16
The categories of this paper are: stat
2
The categories of this paper are: math
21
The categories of this paper are: adap-org
25
The categories of this paper are: patt-sol
8
The categories of this paper are: hep-ex
32
The categories of this paper are: atom-ph
36
The categories of this paper are: cmp-lg
34
The categories of this paper are: chem-ph
9
The categories of this paper are: nlin