LATA
2009
Springer
14 years 6 months ago
2009
Springer
We propose an algorithm that given as input a full word w of length n, and positive integers p and d, outputs (if any exists) a maximal p-periodic partial word contained in w with ...
LATA
2009
Springer
14 years 6 months ago
2009
Springer
We present conditions which guarantee that a composition of marker cellular automata has the same neighbourhood as each of the individual components. We show that, under certain te...
LATA
2009
Springer
14 years 6 months ago
2009
Springer
Abstract. The present paper surveys recent developments in algorithmic teaching. First, the traditional teaching dimension model is recalled. Starting from the observation that the...
LATA
2009
Springer
14 years 6 months ago
2009
Springer
We examine decision problems for various classes of convex languages, previously studied by Ang and Brzozowski under the name “continuous languages”. We can decide whether a la...
LATA
2009
Springer
14 years 6 months ago
2009
Springer
LATA
2009
Springer
14 years 6 months ago
2009
Springer
In this paper we investigate the computational complexity of knot theoretic problems and show upper and lower bounds for planarity problem of signed and unsigned knot diagrams repr...
LATA
2009
Springer
14 years 6 months ago
2009
Springer
Abstract. Glushkov’s algorithm builds an ε-free nondeterministic automaton from a given regular expression. In the worst case, its number of states is linear and its number of t...
LATA
2009
Springer
14 years 6 months ago
2009
Springer
Abstract. Gene trees are leaf-labeled trees inferred from molecular sequences. Due to duplication events arising in genome evolution, gene trees usually have multiple copies of som...
LATA
2009
Springer
14 years 6 months ago
2009
Springer
We show that fixed membership testing for many interesting subclasses of multi-pushdown machines is no harder than for pushdowns with single stack. The models we consider are MVPA...
LATA
2009
Springer
14 years 6 months ago
2009
Springer
Deciding whether a finite set of polyominoes tiles the plane is undecidable by reduction from the Domino problem. In this paper, we prove that the problem remains undecidable if t...