Initial Index: A New Complexity Function for Languages

@inproceedings{Gabarr1983InitialIA,
  title={Initial Index: A New Complexity Function for Languages},
  author={Joaquim Gabarr{\'o}},
  booktitle={ICALP},
  year={1983}
}
A new complexity measure for languages is defined, called the initial index. This measure is of combinatorial nature ; it is a function defined by counting the minimal number of states of automata recognizing approximations of a language. The family of polynomial initial languages is defined, and it is proved that it is an intersection-closed A.F.L. The relations between this family and on-line multicounter Turing-machines, Petri-net languages and context-free languages are investigated. The… CONTINUE READING

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