Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Equivariant ZFA and the foundations of nominal techniques   We give an accessible presentation to the foundations of nominal techniques,
lying between Zermelo-Fraenkel set theory and Fraenkel-Mostowski set theory,
and which has several nice properties including being consistent with the Axiom
of Choice. We give two presentations of equivariance, accompanied by detailed
yet user-friendly discussions of its theoretical significance and practical
application.

34
The categories of this paper are: chem-ph
14
The categories of this paper are: math-ph
31
The categories of this paper are: ao-sci
19
The categories of this paper are: eess
17
The categories of this paper are: q-fin
7
The categories of this paper are: hep-th
25
The categories of this paper are: patt-sol
6
The categories of this paper are: astro-ph
37
The categories of this paper are: supr-con
26
The categories of this paper are: bayes-an
16
The categories of this paper are: stat
5
The categories of this paper are: gr-qc
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The categories of this paper are: atom-ph
36
The categories of this paper are: cmp-lg
28
The categories of this paper are: alg-geom
9
The categories of this paper are: nlin