Project information
Algebraic Methods in Automata and Formal Language Theory II
- Project Identification
- GA201/09/1313
- Project Period
- 1/2009 - 12/2011
- Investor / Pogramme / Project type
-
Czech Science Foundation
- Standard Projects
- MU Faculty or unit
-
Faculty of Science
- doc. RNDr. Libor Polák, CSc.
- doc. Mgr. Ondřej Klíma, Ph.D.
- doc. Mgr. Michal Kunc, Ph.D.
- Keywords
- automata, regular languages, varieties, semirings, language equations
The project develops the algebraic methods in formal language theory. We
will further investigate the classes of syntactic structures of regular
languages like (ordered) syntactic monoids and semirings, and syntactic
homomorphisms with the goal of effective characterizations of membership to
important classes of languages. We will treat also classes of meet automata.
We plan to continue our research on implicit language equations, with an
emphasis on properties of their maximal solutions, aiming to identify which
types of systems of language equations have all maximal solutions always
regular. We will also concentrate on algebraic approach to the problem of
state complexity of operations on regular languages represented by two-way
automata.
We will enrich the q-theory and consider various logics for
characterizations of significant classes of languages.
Within the project we are going to continue our broad international
cooperation. The results will be presented at prestigious conferences and in
acknowledged journals.
Results
see http://www.math.muni.cz/~polak/Grant.html
Publications
Total number of publications: 20
2016
-
On the irreducibility of pseudovarieties of semigroups
Journal of Pure and Applied Algebra, year: 2016, volume: 220, edition: 4, DOI
2012
-
Identity checking problem for transformation monoids
Semigroup Forum, year: 2012, volume: 84, edition: 3, DOI
-
On Biautomata
RAIRO - Theoretical Informatics and Applications, year: 2012, volume: 46, edition: 4, DOI
2011
-
Describing periodicity in two-way deterministic finite automata using transformation semigroups
Developments in Language Theory: 15th International Conference, DLT 2011, Milan, Italy, July 19-22, 2011. Proceedings, year: 2011
-
Identity Problems, Solvability of Equations and Unification in Varieties of Semigroups Related to Varieties of Groups
Algebraic Foundations in Computer Science, year: 2011
-
On Biautomata
Non-Classical Models for Automata and Applications, year: 2011
-
Piecewise Testable Languages via Combinatorics on Words
Discrete Mathematics, year: 2011, volume: 311, edition: 20, DOI
-
Rewriting in Varieties of Idempotent Semigroups
Algebraic Informatics, year: 2011
-
State complexity of operations on two-way deterministic finite automata over a unary alphabet
Descriptional Complexity of Formal Systems: 13th International Workshop, DCFS 2011, Gießen/Limburg, Germany, July 25-27, 2011. Proceedings, year: 2011
-
State complexity of union and intersection for two-way nondeterministic finite automata
Fundamenta Informaticae, year: 2011, volume: 110, edition: 1-4, DOI