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How to keep a dynamic distributive directed graph acyclic and yet grant all requests of edge additions

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2 Author(s)
Even, Shimon ; Dept. of Comput. Sci., Technion, Haifa, Israel ; Pnueli, Y.

A finite directed graph, G (V, E), is considered. The problem is to perform, online, a series of given requests to add or delete edges in the graph while keeping it acyclic. An algorithm that solves this problem is presented. The solution differs from that of S. Katz and O. Shmueli (1987) in that it has the following property. If every request to add an edge kj is such that there is no path from j to k which persists forever, then every request to add an edge is eventually granted. The message complexity of the algorithm is O(|E| |V |) messages per request

Published in:

Information Technology, 1990. 'Next Decade in Information Technology', Proceedings of the 5th Jerusalem Conference on (Cat. No.90TH0326-9)

Date of Conference:

22-25 Oct 1990