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The Communication Hierarchyof Time and SpaceBounded Parallel Machines

Published online by Cambridge University Press:  15 November 2003

Norbert Popély
Norbert Popély*
Affiliation:
Department of Computer Science, P. J. Šafárik University, Jesenná 5, 04154 Košice, Slovakia; popely@mail.com.
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Abstract

We describe the communicating alternating machines and theirsimulation. We show that, in the case of communicating alternatingmachines which are bounded, simultaneously, by polynomial time andlogarithmic space, the use of three communication levels insteadof two does not increase computational power of communicatingalternating machines. This resolves an open problem [2]concerning the exact position of machines with three communicationlevels in the hierarchy.

Keywords

Computational complexitysynchronized alternation.

Information

Type
Research Article
Information
RAIRO - Theoretical Informatics and Applications , Volume 37 , Issue 2 , April 2003 , pp. 159 - 176
Copyright
© EDP Sciences, 2003

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References

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