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Binary equality words
Hadravová, Jana ; Holub, Štěpán (advisor) ; Stanovský, David (referee)
Binary equality language is a set consisting of all solutions of equation g(w) = h(w), where g, h are arbitrary binary morphisms. Recently, it has been prooved that equality set for each pair of morphisms g, h is generated by at most two words. Structure of binary equality language has been already known in the case that at least one of morphisms g, h is periodic or if their equality set is generated exactly by two words. The main objective of the paper was to find a structure of solutions for morphisms whose equality set is generated by one word. The problem in general case remains unsolved but special result for solutions consisting of just one block for marked morphisms was discovered. Using methods established in this paper (covering by the same pattern to find n-multiple p-overflows and working with the cyclic pair (e, f, z)) it is believed that some more results can be achieved in the near future.
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Structure of equality sets
Hadravová, Jana ; Holub, Štěpán (advisor) ; Currie, James (referee) ; Masáková, Zuzana (referee)
Title: Structure of equality sets Author: Jana Hadravová Department: Department of Algebra Supervisor: doc. Mgr. Štěpán Holub, Ph.D., Dept. of Algebra Abstract: Binary equality set of two morphisms g, h : ⌃⇤ ! A⇤ is a set of all words w over two-letter alphabet ⌃ satisfying g(w) = h(w). Elements of this set are called binary equality words. One of the important results of research on binary equality sets is the proof of the fact that each binary equality set is generated by at most two words provided that both morphisms g and h are non-periodic. Moreover, if a binary equality set is generated by exactly two words, then the structure of both generators, and therefore of the whole set, is uniquely given. This work presents the results of our research on the structure of binary equality sets with a single generator. Importantly, these generators can be decomposed into simpler structures. Generators which can not be further decomposed are called simple equality words. First part of the presented work describes the structure of simple equality words and introduces their detailed classification. The main result of the first part is a precise characterisation of su ciently large simple equality words. In the second part, the work describes the iterative process which transforms a general generator of a binary...
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The Risk of Burnout in Primary School Teachers
Hadravová, Jana ; Krčmářová, Tereza (advisor) ; Zemanová, Lenka (referee)
The Risk of Burnout in Primary School Teachers This diploma thesis deals with the risk of burnout syndrome in primary school teachers. The theoretical part of the diploma thesis provides an overview of the theoretical concept of burnout in teachers and the effects of burnout on their job performance and their personal life. The empirical part of the thesis introduces a qualitative research of the risk of burnout in primary school teachers who study the combined form of the 5- year Master's study programme at the Faculty of Education of Charles University, while working full-time. I interviewed several teachers who have been at the greatest risk of burnout, based on a questionnaire survey, about the factors that affect their mental health, about their perceived form of support and about their coping skills. Up to two-thirds of teachers experience exhaustion during their studies. Chronic stress, which is at the highest level during last years of the 5-year study programme, negatively affects their well-being, their family life and their physical and mental health. Key protective factors are problem-focused coping skills and work-life balance. The supportive attitude of the primary school management, as well as the attitude of the Faculty of Education towards studying teachers, can be also of...
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Structure of equality sets
Hadravová, Jana ; Holub, Štěpán (advisor) ; Currie, James (referee) ; Masáková, Zuzana (referee)
Title: Structure of equality sets Author: Jana Hadravová Department: Department of Algebra Supervisor: doc. Mgr. Štěpán Holub, Ph.D., Dept. of Algebra Abstract: Binary equality set of two morphisms g, h : ⌃⇤ ! A⇤ is a set of all words w over two-letter alphabet ⌃ satisfying g(w) = h(w). Elements of this set are called binary equality words. One of the important results of research on binary equality sets is the proof of the fact that each binary equality set is generated by at most two words provided that both morphisms g and h are non-periodic. Moreover, if a binary equality set is generated by exactly two words, then the structure of both generators, and therefore of the whole set, is uniquely given. This work presents the results of our research on the structure of binary equality sets with a single generator. Importantly, these generators can be decomposed into simpler structures. Generators which can not be further decomposed are called simple equality words. First part of the presented work describes the structure of simple equality words and introduces their detailed classification. The main result of the first part is a precise characterisation of su ciently large simple equality words. In the second part, the work describes the iterative process which transforms a general generator of a binary...
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Binary equality words
Hadravová, Jana ; Stanovský, David (referee) ; Holub, Štěpán (advisor)
Binary equality language is a set consisting of all solutions of equation g(w) = h(w), where g, h are arbitrary binary morphisms. Recently, it has been prooved that equality set for each pair of morphisms g, h is generated by at most two words. Structure of binary equality language has been already known in the case that at least one of morphisms g, h is periodic or if their equality set is generated exactly by two words. The main objective of the paper was to find a structure of solutions for morphisms whose equality set is generated by one word. The problem in general case remains unsolved but special result for solutions consisting of just one block for marked morphisms was discovered. Using methods established in this paper (covering by the same pattern to find n-multiple p-overflows and working with the cyclic pair (e, f, z)) it is believed that some more results can be achieved in the near future.
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