Abstract
This paper presents a fully dynamic algorithm for maintaining the transitive closure of a directed graph. All updates and queries can be computed by constant depth threshold circuits of polynomial size (TC° circuits). This places transitive closure in the dynamic complexity class DynTC°, and implies that transitive closure can be maintained in databases using updates written in a first order query language plus counting operators, while keeping the size of the database polynomial in the size of the graph.
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© 2001 Springer-Verlag Berlin Heidelberg
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Hesse, W. (2001). The Dynamic Complexity of Transitive Closure Is in DynTC°. In: Van den Bussche, J., Vianu, V. (eds) Database Theory — ICDT 2001. ICDT 2001. Lecture Notes in Computer Science, vol 1973. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-44503-X_16
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DOI: https://doi.org/10.1007/3-540-44503-X_16
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