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DLT
2010
14 years 10 months ago
Minimization of Deterministic Bottom-Up Tree Transducers
We show that for every deterministic bottom-up tree transducer, a unique equivalent transducer can be constructed which is minimal. The construction is based on a sequence of norma...
Sylvia Friese, Helmut Seidl, Sebastian Maneth
CORR
2008
Springer
110views Education» more  CORR 2008»
14 years 10 months ago
Finding Dense Subgraphs in G(n,1/2)
Finding the largest clique in random graphs is a well known hard problem. It is known that a random graph G(n, 1/2) almost surely has a clique of size about 2 log n. A simple greed...
Atish Das Sarma, Amit Deshpande, Ravi Kannan
DM
2010
90views more  DM 2010»
14 years 10 months ago
The firefighter problem for cubic graphs
We show that the firefighter problem is NP-complete for cubic graphs. We also show that given a rooted tree of maximum degree three in which every leaf is the same distance from t...
Andrew King, Gary MacGillivray
DAM
2008
72views more  DAM 2008»
14 years 10 months ago
Minimization of circuit registers: Retiming revisited
In this paper, we address the following problem: given a synchronous digital circuit, is it possible to construct a new circuit computing the same function as the original one but...
Bruno Gaujal, Jean Mairesse
DAM
2008
78views more  DAM 2008»
14 years 10 months ago
Semi-preemptive routing on trees
We study a variant of the pickup-and-delivery problem (PDP) in which the objects that have to be transported can be reloaded at most d times, for a given d N. This problem is kno...
Sven Oliver Krumke, Dirk Räbiger, Rainer Schr...