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DLT
2010
15 years 1 months ago
On a Powerful Class of Non-universal P Systems with Active Membranes
Abstract. We prove that uniform and semi-uniform families of P systems with active membranes using only communication and nonelementary division rules are not computationally unive...
Antonio E. Porreca, Alberto Leporati, Claudio Zand...
FOCS
2006
IEEE
15 years 6 months ago
Explicit Exclusive Set Systems with Applications to Broadcast Encryption
A family of subsets C of [n] def = {1, . . . , n} is (r, t)exclusive if for every S ⊂ [n] of size at least n − r, there exist S1, . . . , St ∈ C with S = S1∪S2∪· · · ...
Craig Gentry, Zulfikar Ramzan, David P. Woodruff
JAR
1998
57views more  JAR 1998»
14 years 11 months ago
Signed Systems for Paraconsistent Reasoning
In [6] Besnard and Schaub elaborated a novel approach to paraconsistent reasoning which lead to a family of paraconsistent consequence relations. In a sense these try to safeguard...
Philippe Besnard, Torsten Schaub
SIAMCO
2010
153views more  SIAMCO 2010»
14 years 6 months ago
Optimal Control for an Elliptic System with Polygonal State Constraints
This work is devoted to stationary optimal control problems with polygonal constraints on the components of the state. Existence of Lagrange multipliers, of different regularity, i...
Karl Kunisch, Kewei Liang, Xiliang Lu
ALP
1992
Springer
15 years 4 months ago
On the Relation Between Primitive Recursion, Schematization and Divergence
The paper presents a new schematization of in nite families of terms called the primal grammars, based on the notion of primitive recursive rewrite systems. This schematization is...
Miki Hermann