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» Parallelizing time with polynomial circuits
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CONCUR
2003
Springer
14 years 1 months ago
Composition of Cryptographic Protocols in a Probabilistic Polynomial-Time Process Calculus
We describe a probabilistic polynomial-time process calculus for analyzing cryptographic protocols and use it to derive compositionality properties of protocols in the presence of ...
Paulo Mateus, John C. Mitchell, Andre Scedrov
CONCUR
1998
Springer
14 years 3 days ago
On Discretization of Delays in Timed Automata and Digital Circuits
In this paper we solve the following problem: \given a digital circuit composed of gates whose real-valued delays are in an integerbounded interval, is there a way to discretize ti...
Eugene Asarin, Oded Maler, Amir Pnueli
ICALP
2000
Springer
13 years 11 months ago
Parallel Machine Scheduling Problems with Controllable Processing Times
We consider the problem of scheduling n independent jobs on m identical machines that operate in parallel. Each job has a controllable processing time. The fact that the jobs have...
Klaus Jansen, Monaldo Mastrolilli
MOR
2000
90views more  MOR 2000»
13 years 7 months ago
A PTAS for Minimizing the Total Weighted Completion Time on Identical Parallel Machines
We consider the problem of scheduling a set of n jobs on m identical parallel machines so as to minimize the weighted sum of job completion times. This problem is NP-hard in the s...
Martin Skutella, Gerhard J. Woeginger
COCO
1998
Springer
103views Algorithms» more  COCO 1998»
14 years 3 days ago
Nonrelativizing Separations
We show that MAEXP, the exponential time version of the Merlin-Arthur class, does not have polynomial size circuits. This significantly improves the previous known result due to K...
Harry Buhrman, Lance Fortnow, Thomas Thierauf