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MST
2006
99views more  MST 2006»
13 years 7 months ago
Complexity of the Exact Domatic Number Problem and of the Exact Conveyor Flow Shop Problem
We prove that the exact versions of the domatic number problem are complete for the levels of the boolean hierarchy over NP. The domatic number problem, which arises in the area of...
Tobias Riege, Jörg Rothe
MST
2006
129views more  MST 2006»
13 years 7 months ago
Reachability Problems on Regular Ground Tree Rewriting Graphs
We consider the transition graphs of regular ground tree (or term) rewriting systems. The vertex set of such a graph is a (possibly infinite) set of trees. Thus, with a finite tree...
Christof Löding
MST
2006
106views more  MST 2006»
13 years 7 months ago
More Fun with Symmetric Venn Diagrams
Abstract. Many researchers have had fun searching for and rendering symmetric Venn diagrams, culminating in the recent result of Griggs, Killian, and Savage ("Venn Diagrams an...
Frank Ruskey, Mark Weston
MST
2006
100views more  MST 2006»
13 years 7 months ago
On Delivery Times in Packet Networks under Adversarial Traffic
We consider packet networks and make use of the adversarial queuing theory" model 10 . We are interested in the question of guaranteeing that all packets are actually deliver...
Adi Rosén, Michael S. Tsirkin
MST
2000
57views more  MST 2000»
13 years 7 months ago
On Scheduling Parallel Tasks at Twilight
We consider the problem of processing a given number of tasks on a given number of processors as quickly as possible when only vague information about the processing time of a task...
Hannah Bast