Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Graph-Theoretic Characterization of The Feasibility of The
  Precoding-Based 3-Unicast Interference Alignment Scheme   A new precoding-based intersession network coding (NC) scheme has recently
been proposed, which applies the interference alignment technique, originally
devised for wireless interference channels, to the 3-unicast problem of
directed acyclic networks. The main result of this work is a graph-theoretic
characterization of the feasibility of the 3-unicast interference alignment
scheme. To that end, we first investigate several key relationships between the
point-to-point network channel gains and the underlying graph structure. Such
relationships turn out to be critical when characterizing graph-theoretically
the feasibility of precoding-based solutions.

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The categories of this paper are: cond-mat
30
The categories of this paper are: q-alg
23
The categories of this paper are: solv-int
25
The categories of this paper are: patt-sol
32
The categories of this paper are: atom-ph
12
The categories of this paper are: nucl-th
28
The categories of this paper are: alg-geom
35
The categories of this paper are: mtrl-th
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The categories of this paper are: astro-ph
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The categories of this paper are: hep-ex
22
The categories of this paper are: chao-dyn
10
The categories of this paper are: q-bio
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The categories of this paper are: hep-ph
29
The categories of this paper are: funct-an
15
The categories of this paper are: nucl-ex
27
The categories of this paper are: comp-gas