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Department: Any ÅAU / Department of Information Technologies UTU / Department of Information Technology UTU / Department of Mathematics and Statistics UTU / Turku School of Economics, Institute of Information Systems Sciences

Research Unit: Any Algorithmics and Computational Intelligence Group (ACI) Biomathematics Research Unit (BIOMATH) Communication Systems (ComSys) Computational Biomodeling Laboratory (Combio Lab) Data Mining and Knowledge Management Laboratory Distributed Systems Laboratory (DS Lab) Embedded Computer and Electronic Systems (ECES) Embedded Systems Laboratory (ESLAB) FUNDIM, Fundamentals of Computing and Discrete Mathematics Institute for Advanced Management Systems Research (IAMSR) Learning and Reasoning Lab Software Construction Laboratorium Software Development Laboratory (SwDev) Software Engineering Laboratory (SE Lab) Turku BioNLP Group Turku Optimization Group (TOpGroup) UTU Information Systems Science (ISS)

Publication type: Any Monographs Edited books Edited special issues of journals Edited proceedings Articles in journals Articles in proceedings Chapters in edited books Ph.D. thesis Lic. thesis Technical reports

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Articles in journals (6):

• Mari Huova, Juhani Karhumäki, Aleksi Saarela, Problems in Between Words and Abelian Words: k-Abelian Avoidability. Theoretical Computer Science 454, 172–177, 2012.
• Juhani Karhumäki, Aleksi Saarela, On Maximal Chains of Systems of Word Equations. Proceedings of the Steklov Institute of Mathematics 274(1), 116–123, 2011.
• Juhani Karhumäki, Aleksi Saarela, The Unique Decipherability in the Monoid of Regular Languages is Undecidable. Fundamenta Informaticae 110(1-4), 197–200, 2011.
• Aleksi Saarela, Unique Decipherability in the Additive Monoid of Sets of Numbers. RAIRO - Theoretical Informatics and Applications 45(2), 225-234, 2011.
• Juhani Karhumäki, Aleksi Saarela, Noneffective Regularity of Equality Languages and Bounded Delay Morphisms. Discrete Mathematics & Theoretical Computer Science 12(4), 9-18, 2010.
• Aleksi Saarela, Ultimately Constant Abelian Complexity of Infinite Words. Journal of Automata, Languages and Combinatorics 14(3-4), 255–258, 2010.

Articles in proceedings (6):

• Mari Huova, Aleksi Saarela, Strongly k-Abelian Repetitions. In: Juhani Karhumäki, Arto Lepistö, Luca Q. Zamboni (Eds.), Combinatorics on Words, LNCS 8079, 161–168, Springer, 2013.
• Aleksi Saarela, Systems of Word Equations and Polynomials: A New Approach. In: Petr Ambrož, Štěpán Holub, Zuzana Masáková (Eds.), Proceedings of the 8th International Conference WORDS, 215-225, Electronic Proceedings in Theoretical Computer Science, 2011.
• Juhani Karhumäki, Aleksi Saarela, Noneffective Regularity of Equality Languages and Bounded Delay Morphisms. In: Proceedings of the conference AutoMathA 2009, 2009.
• Aleksi Saarela, On the Complexity of Hmelevskii's Theorem and Satisfiability of Three Unknown Equations. In: Volker Nowotka Dirk Diekert (Ed.), Proceedings of the 13th International Conference on Developments in Language Theory, 5583, 443-453, Springer, 2009.
• Juhani Karhumäki, Aleksi Saarela, An Analysis and a Reproof of Hmelevskii's Theorem (Extended Abstract). In: Masami Ito, Masafumi Toyama (Eds.), Developments in Language Theory, Lecture Notes in Computer Science 5257, 467–478, Springer, 2008.
• Aleksi Saarela, Jan-Erik Ekberg, Kaisa Nyberg, Random Beacon for Privacy and Group Security. In: WIMOB \'08. IEEE International Conference on Wireless and Mobile Computing, Networking and Communications, 2008. , 514-519, 2008.

Chapters in edited books (1):

• Mari Huova, Juhani Karhumäki, Aleksi Saarela, Kalle Saari, Local Squares, Periodicity and Finite Automata. In: Cristian Calude, Grzegorz Rozenberg, Arto Salomaa (Eds.), Rainbow of Computer Science, Lecture Notes in Computer Science 6570, 90–101, Springer, 2011.

TUCS Lecture Notes (2):

• Juhani Karhumäki, Aleksi Saarela (Eds.), Proceedings of the Fourth Russian Finnish Symposium on Discrete Mathematics, TUCS Lecture Notes, 2017.
• Juhani Karhumäki, Aleksi Saarela (Eds.), Proceedings of the Finnish Mathematical Days 2016, TUCS Lecture Notes, 2016.

Ph.D. thesis (1):

• Aleksi Saarela, Word Equations and Related Topics: Independence, Decidability and Chracterizations. TUCS Dissertations 145. University of Turku, 2012.