A characterization of poly-slender context-free languages
@article{Ilie2000ACO, title={A characterization of poly-slender context-free languages}, author={Lucian Ilie and Grzegorz Rozenberg and Arto Salomaa}, journal={RAIRO Theor. Informatics Appl.}, year={2000}, volume={34}, pages={77-86} }
For a non-negative integer k , we say that a language L is k -poly-slender if the number of words of length n in L is of order ${\cal O}(n^k)$
. We give a precise characterization of the k -poly-slender context-free languages. The well-known characterization
of the k -poly-slender regular languages is an immediate consequence
of ours.
22 Citations
Recognition of poly-slender context-free languages by trellis automata
- Computer ScienceTheor. Comput. Sci.
- 2017
Recognition of Linear-Slender Context-Free Languages by Real Time One-Way Cellular Automata
- Computer ScienceAutomata
- 2015
It is shown that every linear-slender context-free language is recognizable by a real time one-way cellular automaton.
The Parikh counting functions of sparse context-free languages are quasi-polynomials
- MathematicsTheor. Comput. Sci.
- 2009
On the structure of the counting function of sparse context-free languages
- Computer ScienceTheor. Comput. Sci.
- 2006
Finding the Growth Rate of a Regular of Context-Free Language in Polynomial Time
- Computer ScienceDevelopments in Language Theory
- 2008
An O(n+ t) time algorithm is given to determine whether an NFA with nstates and ttransitions accepts a language of polynomial or exponential growth and how to solve these problems for context-free grammars.
On the structure of context-free languages
- Mathematics
- 2015
We discuss the following result. Given two languages L1;L2 A , we say that L1 is commutatively equivalent to L2 if there exists a bijection f : L1 ! L2 from L1 onto L2 such that, for every u2 L1,…
On the separability of sparse context-free languages and of bounded rational relations
- Computer ScienceTheor. Comput. Sci.
- 2007
Finding the Growth Rate of a Regular or Context-Free Language in Polynomial Time
- Computer ScienceInt. J. Found. Comput. Sci.
- 2010
An O(n + t) time algorithm is given to determine whether an NFA with n states and t transitions accepts a language of polynomial or exponential growth and how to solve these problems for context-free grammars.
On the commutative equivalence of bounded context-free and regular languages: The code case
- MathematicsTheor. Comput. Sci.
- 2015
References
SHOWING 1-10 OF 38 REFERENCES
Decision problems concerning thinness and slenderness of formal languages
- Linguistics, Computer ScienceActa Informatica
- 1998
It is shown that all four properties of Parikh thin and Parikh slender languages are decidable for bounded semilinear languages but undecidable for DT0L languages.
Semi-discrete context-free languages †
- Computer Science
- 1983
It is shown that a language is semi-discrete and context-free iff it is a discrete union of languages of the form , iffit is a finite disjoint union of discrete context- free languages.
On Parikh Slender Languages and Power Series
- Computer ScienceJ. Comput. Syst. Sci.
- 1996
A new method for ambiguity proofs of context-free languages and a new proof of an earlier result of Autebert, Flajolet, and Gabarro concerning prefixes of infinite words are obtained.
Characterizing Regular Languages with Polynomial Densities
- MathematicsMFCS
- 1992
It is shown that the function p R(n) of a regular language R is O(n k ), for some k≥0, if and only if R can be represented as a finite union of the regular expressions of the form xy 1 * z1 ...y t * zt with a nonnegative integer t≤k+1.