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STACS
2007
Springer
15 years 10 months ago
Bounded-Variable Fragments of Hybrid Logics
Hybrid logics extend modal logics by first-order concepts, in particular they allow a limited use of variables. Unfortunately, in general, satisfiability for hybrid formulas is u...
Thomas Schwentick, Volker Weber
FOCS
2006
IEEE
15 years 10 months ago
On the time complexity of 2-tag systems and small universal Turing machines
We show that 2-tag systems efficiently simulate Turing machines. As a corollary we find that the small universal Turing machines of Rogozhin, Minsky and others simulate Turing ma...
Damien Woods, Turlough Neary
IPPS
2005
IEEE
15 years 10 months ago
Self-Stabilizing Anonymous Leader Election in a Tree
We propose a new self-stabilizing anonymous leader election algorithm in a tree graph. We show the correctness of the protocol and show that the protocol terminates in O(n4 ) time...
Zhenyu Xu, Pradip K. Srimani
CIE
2005
Springer
15 years 10 months ago
Some Reducibilities on Regular Sets
Abstract. We discuss some known and introduce some new reducibilities on regular sets. We establish some facts on the corresponding degree structures and relate some reducibilities...
Victor L. Selivanov
STACS
2005
Springer
15 years 10 months ago
Pattern Occurrences in Multicomponent Models
Abstract. In this paper we determine some limit distributions of pattern statistics in rational stochastic models, defined by means of nondeterministic weighted finite automata. ...
Massimiliano Goldwurm, Violetta Lonati