A remark on evolutionary systems

E. Csuhaj-Varjú, Jürgen Dassow

Research output: Contribution to journalArticle

Abstract

Evolutionary systems have been introduced by Csuhaj-Varjú and Mitrana (Acta Inform. 36 (2000) 913) who proved that two context-sensitive or three context-free components are sufficient to obtain all recursively enumerable languages. We improve these results by showing that two context-free components are sufficient to generate all recursively enumerable languages. Furthermore, we study the power of systems with one component.

Original languageEnglish
Pages (from-to)111-115
Number of pages5
JournalDiscrete Applied Mathematics
Volume146
Issue number1
DOIs
Publication statusPublished - Feb 15 2005

Fingerprint

Recursively Enumerable Languages
Sufficient
Context

Keywords

  • Descriptional complexity of formal languages
  • Evolutionary systems

ASJC Scopus subject areas

  • Computational Theory and Mathematics
  • Applied Mathematics
  • Discrete Mathematics and Combinatorics
  • Theoretical Computer Science

Cite this

A remark on evolutionary systems. / Csuhaj-Varjú, E.; Dassow, Jürgen.

In: Discrete Applied Mathematics, Vol. 146, No. 1, 15.02.2005, p. 111-115.

Research output: Contribution to journalArticle

Csuhaj-Varjú, E. ; Dassow, Jürgen. / A remark on evolutionary systems. In: Discrete Applied Mathematics. 2005 ; Vol. 146, No. 1. pp. 111-115.
@article{ef319b098a454a389f3be979970ab8bd,
title = "A remark on evolutionary systems",
abstract = "Evolutionary systems have been introduced by Csuhaj-Varj{\'u} and Mitrana (Acta Inform. 36 (2000) 913) who proved that two context-sensitive or three context-free components are sufficient to obtain all recursively enumerable languages. We improve these results by showing that two context-free components are sufficient to generate all recursively enumerable languages. Furthermore, we study the power of systems with one component.",
keywords = "Descriptional complexity of formal languages, Evolutionary systems",
author = "E. Csuhaj-Varj{\'u} and J{\"u}rgen Dassow",
year = "2005",
month = "2",
day = "15",
doi = "10.1016/j.dam.2004.06.011",
language = "English",
volume = "146",
pages = "111--115",
journal = "Discrete Applied Mathematics",
issn = "0166-218X",
publisher = "Elsevier",
number = "1",

}

TY - JOUR

T1 - A remark on evolutionary systems

AU - Csuhaj-Varjú, E.

AU - Dassow, Jürgen

PY - 2005/2/15

Y1 - 2005/2/15

N2 - Evolutionary systems have been introduced by Csuhaj-Varjú and Mitrana (Acta Inform. 36 (2000) 913) who proved that two context-sensitive or three context-free components are sufficient to obtain all recursively enumerable languages. We improve these results by showing that two context-free components are sufficient to generate all recursively enumerable languages. Furthermore, we study the power of systems with one component.

AB - Evolutionary systems have been introduced by Csuhaj-Varjú and Mitrana (Acta Inform. 36 (2000) 913) who proved that two context-sensitive or three context-free components are sufficient to obtain all recursively enumerable languages. We improve these results by showing that two context-free components are sufficient to generate all recursively enumerable languages. Furthermore, we study the power of systems with one component.

KW - Descriptional complexity of formal languages

KW - Evolutionary systems

UR - http://www.scopus.com/inward/record.url?scp=12444266766&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=12444266766&partnerID=8YFLogxK

U2 - 10.1016/j.dam.2004.06.011

DO - 10.1016/j.dam.2004.06.011

M3 - Article

VL - 146

SP - 111

EP - 115

JO - Discrete Applied Mathematics

JF - Discrete Applied Mathematics

SN - 0166-218X

IS - 1

ER -