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DLT
2010
13 years 8 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»
13 years 8 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»
13 years 8 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»
13 years 8 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»
13 years 8 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...