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IFIP
2004
Springer
13 years 11 months ago
Solving Packing Problem with Weaker Block Solvers
We study the general packing problem with M constraints. In [Jansen and Zhang, TCS 2002] a c(1 + ε)-approximation algorithm for the general packing problem was proposed. A block s...
Hu Zhang
IFIP
2004
Springer
13 years 11 months ago
New-HOPLA: A Higher-order Process Language with Name Generation
Abstract This paper introduces new-HOPLA, a concise but powerful language for higherorder nondeterministic processes with name generation. Its origins as a metalanguage for domain ...
Glynn Winskel, Francesco Zappa Nardelli
IFIP
2004
Springer
13 years 11 months ago
Prototyping Proof Carrying Code
Abstract We introduce a generic framework for proof carrying code, developed and mechanically verified in Isabelle/HOL. The framework defines and proves sound a verification con...
Martin Wildmoser, Tobias Nipkow, Gerwin Klein, Seb...
IFIP
2004
Springer
13 years 11 months ago
The Simply-typed Pure Pattern Type System Ensures Strong Normalization
Pure Pattern Type Systems (P2 TS) combine in a unified setting the capabilities of rewriting and λ-calculus. Their type systems, adapted from Barendregt’s λ-cube, are especial...
Benjamin Wack
IFIP
2004
Springer
13 years 11 months ago
Effective Chemistry for Synchrony and Asynchrony
We study from an implementation viewpoint what constitutes a reasonable and effective notion of structural equivalence of terms in a calculus of concurrent processes and propose op...
Deepak Garg, Akash Lal, Sanjiva Prasad
IFIP
2004
Springer
13 years 11 months ago
Efficient Protocols for Computing the Optimal Swap Edges of a Shortest Path Tree
We consider the problem of computing the optimal swap edges of a shortest-path tree. This theoretical problem arises in practice in systems that offer point-offailure shortest-path...
Paola Flocchini, Antonio Mesa Enriques, Linda Pagl...
IFIP
2004
Springer
13 years 11 months ago
The Firing Squad Synchronization Problem with Many Generals For One-Dimensional CA
Abstract The Firing Squad Synchronization Problem is one of the classical problems for cellular automata. In this paper we consider the case of more than one general. A synchronous...
Hubert Schmid, Thomas Worsch
IFIP
2004
Springer
13 years 11 months ago
A Matrix q-Analogue of the Parikh Map
We introduce an extension of the Parikh mapping called the Parikh ¢ -matrix mapping, which takes its values in matrices with polynomial entries. The morphism constructed represent...
Ömer Egecioglu, Oscar H. Ibarra
IFIP
2004
Springer
13 years 11 months ago
Dynamic Typing with Dependent Types
Dependent type systems are promising tools programmers can use to increase the reliability and security of their programs. Unfortunately, dependently-typed programming languages re...
Xinming Ou, Gang Tan, Yitzhak Mandelbaum, David Wa...
IFIP
2004
Springer
13 years 11 months ago
Ensuring Termination by Typability
A term terminates if all its reduction sequences are of finite length. We show four type systems that ensure termination of well-typed π-calculus processes. The systems are obtai...
Yuxin Deng, Davide Sangiorgi