Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Partition of unity systems and B-splines   This paper presents the basic principles of partition of unity systems and
B-splines. Analysis of these systems is performed using Fourier analysis,
multi-resolution analysis, and wavelet analysis.

35
The categories of this paper are: mtrl-th
20
The categories of this paper are: acc-phys
24
The categories of this paper are: dg-ga
31
The categories of this paper are: ao-sci
10
The categories of this paper are: q-bio
29
The categories of this paper are: funct-an
28
The categories of this paper are: alg-geom
19
The categories of this paper are: eess
15
The categories of this paper are: nucl-ex
36
The categories of this paper are: cmp-lg
32
The categories of this paper are: atom-ph
11
The categories of this paper are: hep-lat
25
The categories of this paper are: patt-sol
6
The categories of this paper are: astro-ph
8
The categories of this paper are: hep-ex
33
The categories of this paper are: plasm-ph