Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the duality between rotational minimal surfaces and maximal surfaces   We investigate the duality between minimal surfaces in Euclidean space and
maximal surfaces in Lorentz-Minkowski space in the family of rotational
surfaces. We study if the dual surfaces of two congruent rotational minimal (or
maximal) surfaces are congruent. We show that in the duality process by means
of a one-parameter group of rotations, it appears the family of Bonnet minimal
(maximal) surfaces and the Goursat transformations.

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The categories of this paper are: hep-ph
13
The categories of this paper are: quant-ph
18
The categories of this paper are: econ
5
The categories of this paper are: gr-qc
24
The categories of this paper are: dg-ga
37
The categories of this paper are: supr-con
16
The categories of this paper are: stat
27
The categories of this paper are: comp-gas
1
The categories of this paper are: cs
17
The categories of this paper are: q-fin
31
The categories of this paper are: ao-sci
20
The categories of this paper are: acc-phys
15
The categories of this paper are: nucl-ex
26
The categories of this paper are: bayes-an
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The categories of this paper are: nlin
28
The categories of this paper are: alg-geom