Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the CAD-compatible conversion of S-patches   S-patches have many nice mathematical properties. It is known since their
first appearance, that any regular S-patch can be exactly converted into a
trimmed rational B\'ezier surface. This is a big advantage compared to other
multi-sided surface representations that have to be approximated for exporting
them into CAD/CAM systems. The actual conversion process, however, remained at
a theoretical level, with bits and pieces scattered in multiple publications.
In this paper we review the entirety of the algorithm, and investigate it from
a practical aspect.

3
The categories of this paper are: physics
18
The categories of this paper are: econ
32
The categories of this paper are: atom-ph
19
The categories of this paper are: eess
26
The categories of this paper are: bayes-an
28
The categories of this paper are: alg-geom
20
The categories of this paper are: acc-phys
34
The categories of this paper are: chem-ph
14
The categories of this paper are: math-ph
23
The categories of this paper are: solv-int
37
The categories of this paper are: supr-con
31
The categories of this paper are: ao-sci
15
The categories of this paper are: nucl-ex
22
The categories of this paper are: chao-dyn
0
The categories of this paper are: hep-ph
27
The categories of this paper are: comp-gas