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» The Complexity of the Annihilating Polynomial
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GC
2002
Springer
14 years 9 months ago
The Hilbert Series of the Face Ring of a Flag Complex
It is shown that the Hilbert series of the face ring of a clique complex (equivalently, flag complex) of a graph G is, up to a factor, just a specialization of SG (x, y), the subg...
Paul Renteln
MFCS
2010
Springer
14 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
15 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»
14 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...
TCOM
2010
110views more  TCOM 2010»
14 years 8 months ago
Joint data QR-detection and Kalman estimation for OFDM time-varying Rayleigh channel complex gains
—This paper deals with the case of a high speed mobile receiver operating in an orthogonal-frequency-divisionmultiplexing (OFDM) communication system. Assuming the knowledge of d...
Hussein Hijazi, Laurent Ros