Groups of automorphisms of graphs
Grupy symetrií grafů
dissertation thesis (DEFENDED)
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http://hdl.handle.net/20.500.11956/173835Identifiers
Study Information System: 176991
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- Kvalifikační práce [11242]
Author
Advisor
Consultant
Kratochvíl, Jan
Referee
Felsner, Stefan
Širáň, Jozef
Faculty / Institute
Faculty of Mathematics and Physics
Discipline
Computer Science - Theory of Computing, Discrete Models and Optimization
Department
Department of Applied Mathematics
Date of defense
10. 2. 2022
Publisher
Univerzita Karlova, Matematicko-fyzikální fakultaLanguage
English
Grade
Pass
Keywords (Czech)
Graf|grupa|automorfizmus|algoritmus|složitostKeywords (English)
Graph|group|automorphism|algorithm|complexityGroups of automorphisms of graphs - abstrakt V tejto práci skúmame grupy automorfizmov špecifických tried grafov z štrukturál- neho a výpočetného hladiska. Pre intervalové, permutačné, tetivové a rovinné grafy sme odvodili induktívnu charakterizáciu grúp automorfizmov pomocou grupových súčinov. Pre chordálne grafy s ohraničenou listnatosťou sme dokázali, že problémy výpočtu grupy automorfizmov a testovania izomorfizmu sú fixed parameter tractable. Pre mapy na plochách sme popísali lineárny algoritmus, ktorý počíta grupu automorfizmov mapy na ploche s pevným rodom. 1
Groups of automorphisms of graphs - abstract In this thesis we investigate automorphism groups of several restricted classes of graphs from structural and computational point of view. For interval, permutation, circle, and planar graphs we give inductive characterizations of their automorphism groups in terms of group products. For chordal graphs of bounded leafage, prove that computing the automorphism group, and consequently the isomorphism problem, is fixed parameter tractable. For maps on surfaces, we give a linear time algorithm computing the automor- phism group, parametrized by the genus of the underlying surface. 1