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» The Complexity of Rooted Phylogeny problems
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SODA
2010
ACM
200views Algorithms» more  SODA 2010»
14 years 5 months ago
Algorithms for ray class groups and Hilbert class fields
This paper analyzes the complexity of problems from class field theory. Class field theory can be used to show the existence of infinite families of number fields with constant ro...
Sean Hallgren, Kirsten Eisentraeger
AUTOMATICA
2006
142views more  AUTOMATICA 2006»
13 years 7 months ago
Stability regions in the parameter space: D-decomposition revisited
The challenging problem in linear control theory is to describe the total set of parameters (controller coefficients or plant characteristics) which provide stability of a system....
Elena N. Gryazina, Boris T. Polyak
CORR
2011
Springer
158views Education» more  CORR 2011»
13 years 2 months ago
SqFreeEVAL: An (almost) optimal real-root isolation algorithm
Let f be a univariate polynomial with real coefficients, f ∈ R[X]. Subdivision algorithms based on algebraic techniques (e.g., Sturm or Descartes methods) are widely used for is...
Michael Burr, Felix Krahmer
MFCS
2009
Springer
14 years 2 months ago
Branching Programs for Tree Evaluation
We introduce the tree evaluation problem, show that it is in LogDCFL (and hence in P), and study its branching program complexity in the hope of eventually proving a superlogarith...
Mark Braverman, Stephen A. Cook, Pierre McKenzie, ...
DLOG
2007
13 years 10 months ago
Adding ABoxes to a Description Logic with Uniqueness Constraints via Path Agreements
We now know that the addition of a concept constructor called a Path Functional Dependency (PFD) to the Boolean-complete description logic DLF leads to undecidability of ABox consi...
Vitaliy L. Khizder, David Toman, Grant E. Weddell