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DNA
2006
Springer
129views Bioinformatics» more  DNA 2006»
13 years 11 months ago
P Systems with Active Membranes Characterize PSPACE
P system is a natural computing model inspired by behavior of living cells and their membranes. We show that (semi-)uniform families of P systems with active membranes can solve i...
Petr Sosík, Alfonso Rodríguez-Pat&oa...
FOCS
1990
IEEE
13 years 11 months ago
IP=PSPACE
In [Sh92], Adi Shamir proved a complete characterization of the complexity class IP. He showed that when both randomization and interaction are allowed, the proofs that can be ver...
Adi Shamir
MFCS
2009
Springer
14 years 2 months ago
The Longest Path Problem Is Polynomial on Interval Graphs
The longest path problem is the problem of finding a path of maximum length in a graph. Polynomial solutions for this problem are known only for small classes of graphs, while it ...
Kyriaki Ioannidou, George B. Mertzios, Stavros D. ...
FOSSACS
2007
Springer
14 years 1 months ago
Polynomial Constraints for Sets with Cardinality Bounds
Abstract. Logics that can reason about sets and their cardinality bounds are useful in program analysis, program verification, databases, and knowledge bases. This paper presents ...
Bruno Marnette, Viktor Kuncak, Martin C. Rinard
MFCS
2001
Springer
13 years 12 months ago
Characterization of Context-Free Languages with Polynomially Bounded Ambiguity
Abstract. We prove that the class of context-free languages with polynomially bounded ambiguity (PCFL) is the closure of the class of unambiguous languages (UCFL) under projections...
Klaus Wich