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CORR
2006
Springer
87views Education» more  CORR 2006»
13 years 10 months ago
Low Complexity Algorithms for Linear Recurrences
We consider two kinds of problems: the computation of polynomial and rational solutions of linear recurrences with coefficients that are polynomials with integer coefficients; ind...
Alin Bostan, Frédéric Chyzak, Bruno ...
MFCS
2010
Springer
13 years 8 months ago
Parameterized Complexity and Kernelizability of Max Ones and Exact Ones Problems
For a finite set Γ of Boolean relations, Max Ones SAT(Γ) and Exact Ones SAT(Γ) are generalized satisfiability problems where every constraint relation is from Γ, and the task...
Stefan Kratsch, Dániel Marx, Magnus Wahlstr...
TGC
2007
Springer
14 years 4 months ago
On the Complexity of Termination Inference for Processes
We study type systems for termination in the π-calculus from the point of view of type inference. We analyse four systems by Deng and Sangiorgi. We show that inference can be done...
Romain Demangeon, Daniel Hirschkoff, Naoki Kobayas...
CORR
2010
Springer
163views Education» more  CORR 2010»
13 years 6 months ago
NP-hardness of Deciding Convexity of Quartic Polynomials and Related Problems
We show that unless P=NP, there exists no polynomial time (or even pseudo-polynomial time) algorithm that can decide whether a multivariate polynomial of degree four (or higher ev...
Amir Ali Ahmadi, Alexander Olshevsky, Pablo A. Par...
ESORICS
2009
Springer
14 years 10 months ago
Set Covering Problems in Role-Based Access Control
Abstract. Interest in role-based access control has generated considerable research activity in recent years. A number of interesting problems related to the well known set cover p...
Liang Chen, Jason Crampton