The Delta Operation: From Strings to Trees to Strings View Full Text


Ontology type: schema:Chapter      Open Access: True


Chapter Info

DATE

2002

AUTHORS

Joost Engelfriet

ABSTRACT

The delta of a language L consists of the yields of trees of which all paths are in L. The context-free languages are the deltas of the regular languages. The indexed languages are the deltas of the deterministic context-free languages. In general, the nondeterministic (n+1)-iterated pushdown languages are the deltas of the deterministic n-iterated pushdown languages. The recursively enumerable languages are the deltas of the context-free languages. The delta of a string relation R consists of the yields of trees of which all paths are in the R-image of one string. The ET0L languages are the deltas of the relations recognized by deterministic two-tape finite automata. The recursively enumerable languages are the deltas of the finite state transductions. More... »

PAGES

39-56

Book

TITLE

Formal and Natural Computing

ISBN

978-3-540-43190-9
978-3-540-45711-4

Author Affiliations

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/3-540-45711-9_3

DOI

http://dx.doi.org/10.1007/3-540-45711-9_3

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1047227792


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