Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Ionescu's theorem for higher rank graphs   We will define new constructions similar to the graph systems of
correspondences described by Deaconu et al. We will use these to prove a
version of Ionescu's theorem for higher rank graphs. Afterwards we will examine
the properties of these constructions further and make contact with Yeend's
topological k-graphs and the tensor groupoid valued product systems of Fowler
and Sims.

13
The categories of this paper are: quant-ph
28
The categories of this paper are: alg-geom
0
The categories of this paper are: hep-ph
9
The categories of this paper are: nlin
37
The categories of this paper are: supr-con
22
The categories of this paper are: chao-dyn
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The categories of this paper are: dg-ga
10
The categories of this paper are: q-bio
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The categories of this paper are: q-fin
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The categories of this paper are: solv-int
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The categories of this paper are: gr-qc
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The categories of this paper are: nucl-th
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The categories of this paper are: hep-th
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The categories of this paper are: patt-sol
11
The categories of this paper are: hep-lat
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The categories of this paper are: econ