Electronic Resource
Springer
Theory of computing systems
9 (1975), S. 193-197
ISSN:
1433-0490
Source:
Springer Online Journal Archives 1860-2000
Topics:
Computer Science
Notes:
Abstract A functionf on the non-negative integers is a context-free preserving function (cfpf) if and only if for every context-free languageL, {x|(∃y) (xy ∈ L, and |y| =f(|x|))} is a context-free language. In this note we give an algebraic characterization of the class of cfpf's.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01704019
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