We study the differences between the future and the past fragments of fixpoint extensions of first-order temporal logics in their relationship to expiration of database histories. We show that while the past fragment admits a bounded expiration operator, the future one requires retaining data of size bounded from below by a function linear in the length of the history. We also discuss fragments of future fixpoint temporal logic for which bounded expiration operators can exist. © Springer-Verlag Berlin Heidelberg 2003.
CITATION STYLE
Toman, D. (2003). Logical data expiration for fixpoint extensions of temporal logics. Lecture Notes in Computer Science (Including Subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), 2750, 380–393. https://doi.org/10.1007/978-3-540-45072-6_22
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