Title
Orbit expandability of automaton semigroups and groups.
Abstract
We introduce the notion of expandability in the context of automaton semigroups and groups: a word is k-expandable if one can append a suffix to it such that the size of the orbit under the action of the automaton increases by at least k. This definition is motivated by the question which ω-words admit infinite orbits: for such a word, every prefix is expandable.
Year
DOI
Venue
2020
10.1016/j.tcs.2019.12.037
Theoretical Computer Science
Keywords
Field
DocType
Automata,Automaton group,Automaton semigroup,Expandability,Growth,Orbital graph
Discrete mathematics,Combinatorics,Algebraic number,Nondeterministic algorithm,Suffix,Upper and lower bounds,Automaton,Prefix,Decidability,Invertible matrix,Mathematics
Journal
Volume
ISSN
Citations 
809
0304-3975
1
PageRank 
References 
Authors
0.39
0
3
Name
Order
Citations
PageRank
Daniele D'Angeli1297.01
Emanuele Rodaro25515.63
Jan Philipp Wächter333.57