Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the flexibility of Siamese dipyramids   Polyhedra called Siamese dipyramids are known to be non-flexible, however
their physical models behave like physical models of flexible polyhedra. We
discuss a simple mathematical method for explaining the model flexibility of
the Siamese dipyramids.

7
The categories of this paper are: hep-th
33
The categories of this paper are: plasm-ph
28
The categories of this paper are: alg-geom
21
The categories of this paper are: adap-org
8
The categories of this paper are: hep-ex
20
The categories of this paper are: acc-phys
31
The categories of this paper are: ao-sci
14
The categories of this paper are: math-ph
18
The categories of this paper are: econ
37
The categories of this paper are: supr-con
16
The categories of this paper are: stat
24
The categories of this paper are: dg-ga
35
The categories of this paper are: mtrl-th
10
The categories of this paper are: q-bio
30
The categories of this paper are: q-alg
11
The categories of this paper are: hep-lat