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- W2949117850 abstract "We consider the problem of communicating the sum of $m$ sources to $n$ terminals in a directed acyclic network. Recently, it was shown that for a network of unit capacity links with either $m=2$ or $n=2$, the sum of the sources can be communicated to the terminals if and only if every source-terminal pair is connected in the network. We show in this paper that for any finite set of primes, there exists a network where the sum of the sources can be communicated to the terminals only over finite fields of characteristic belonging to that set. As a corollary, this gives networks where the sum can not be communicated over any finite field even though every source is connected to every terminal." @default.
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- W2949117850 date "2008-11-03" @default.
- W2949117850 modified "2023-09-27" @default.
- W2949117850 title "Some results on communicating the sum of sources over a network" @default.
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