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RANDOM
1997
Springer
14 years 3 months ago
A Combinatorial Consistency Lemma with Application to Proving the PCP Theorem
The current proof of the PCP Theorem (i.e., NP = PCP(log, O(1))) is very complicated. One source of difficulty is the technically involved analysis of low-degree tests. Here, we r...
Oded Goldreich, Shmuel Safra
MFCS
1997
Springer
14 years 3 months ago
Resolution Proofs, Exponential Bounds, and Kolmogorov Complexity
We prove an exponential lower bound for the length of any resolution proof for the same set of clauses as the one used by Urquhart [13]. Our contribution is a significant simpli...
Uwe Schöning
MFCS
1997
Springer
14 years 3 months ago
Integrating the Specification Techniques of Graph Transformation and Temporal Logic
The aim of this paper is an integration of graph grammars with different kinds of behavioural constraints, in particular with temporal logic constraints. Since the usual algebraic ...
Reiko Heckel, Hartmut Ehrig, Uwe Wolter, Andrea Co...
MFCS
1997
Springer
14 years 3 months ago
Simulation as a Correct Transformation of Rewrite Systems
Abstract. Kamperman and Walters proposed the notion of a simulation of one rewrite system by another one, whereby each term of the simulating rewrite system is related to a term in...
Wan Fokkink, Jaco van de Pol
MFCS
1997
Springer
14 years 3 months ago
When are Two Rewrite Systems More than None?
It is important for programs to have modular correctness properties. We look at non-deterministic programs expressed as termrewriting systems which compute normal forms of input t...
Nachum Dershowitz
ITICSE
1996
ACM
14 years 3 months ago
Scientific visualization - some novel approaches to learning
Scientific visualization is becoming an important part of the curriculum in a number of disciplines. It is a very practical subject, but the commercially available visualization s...
Ken Brodlie, Jason Wood, Helen Wright
ITICSE
1996
ACM
14 years 3 months ago
An interactive environment for the teaching of computer architecture
The operation of a computer can be conceptualised as a large, discrete and constantly changing set of state information. However even for the simplest uni-processor the data set o...
Paul S. Coe, Laurence M. Williams, Roland N. Ibbet...