Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Matched $G^k$-constructions yield $C^k$-continuous iso-geometric
  elements   The note shows how $G^k$ (geometrically continuous surface) constructions
yield $C^k$ iso-geometric elements also at irregular quad mesh points where
three or more than four elements come together.

27
The categories of this paper are: comp-gas
11
The categories of this paper are: hep-lat
35
The categories of this paper are: mtrl-th
20
The categories of this paper are: acc-phys
23
The categories of this paper are: solv-int
21
The categories of this paper are: adap-org
17
The categories of this paper are: q-fin
15
The categories of this paper are: nucl-ex
37
The categories of this paper are: supr-con
18
The categories of this paper are: econ
14
The categories of this paper are: math-ph
31
The categories of this paper are: ao-sci
34
The categories of this paper are: chem-ph
9
The categories of this paper are: nlin
30
The categories of this paper are: q-alg
10
The categories of this paper are: q-bio