Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Naive Axiomatic Mengenlehre for Experiments   The main goal of "Naive Axiomatic Mengenlehre" (NAM) is to find a more or
less adequately explicit criterion that precisely formalizes the intuitive
notion of a "normal set". NAM is mainly a construction procedure for building
several formal systems NAMix, each of which can turn out to be an adequate
codification of the contentual naive set theory. ("i" is a natural number which
enumerates the used "normality" condition, and "x" is a letter which points to
the variants of the used axioms.) Parallel to NAM, the Naive Axiomatic Class
Theory NACT is constructed as a system of systems too.

29
The categories of this paper are: funct-an
15
The categories of this paper are: nucl-ex
1
The categories of this paper are: cs
16
The categories of this paper are: stat
12
The categories of this paper are: nucl-th
13
The categories of this paper are: quant-ph
37
The categories of this paper are: supr-con
0
The categories of this paper are: hep-ph
4
The categories of this paper are: cond-mat
25
The categories of this paper are: patt-sol
7
The categories of this paper are: hep-th
6
The categories of this paper are: astro-ph
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The categories of this paper are: dg-ga
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The categories of this paper are: acc-phys
21
The categories of this paper are: adap-org
14
The categories of this paper are: math-ph