Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: IVOA Architecture   This note describes the technical architecture of the IVOA. The description
is decomposed into three levels. Level 0 is a general, high level summary of
the IVOA Architecture. Level 1 provides more details about components and
functionalities, still without being overly technical. Finally, Level 2
displays how the IVOA standards fit into the IVOA Architecture.

9
The categories of this paper are: nlin
13
The categories of this paper are: quant-ph
23
The categories of this paper are: solv-int
15
The categories of this paper are: nucl-ex
31
The categories of this paper are: ao-sci
16
The categories of this paper are: stat
2
The categories of this paper are: math
3
The categories of this paper are: physics
18
The categories of this paper are: econ
22
The categories of this paper are: chao-dyn
1
The categories of this paper are: cs
34
The categories of this paper are: chem-ph
27
The categories of this paper are: comp-gas
35
The categories of this paper are: mtrl-th
36
The categories of this paper are: cmp-lg
4
The categories of this paper are: cond-mat