Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 2 of 2 for “"Bass-Serre Theory"”.
-
Proper decompositions of finitely presented groups
… are special subsets called patterns and tracks. Bass-Serre theory and van Kampen's theorem show that given such a G, there exists a proper decomposition if and only if there exists a track that determines a proper decomposition. With this in mind, an original algorithm is constructed here to find …
-
Acylindrical and strong accessibility
Weidmann has produced a bound on the number of edges of a graph of groups splitting for when a finitely generated group acts on a tree (𝑘,𝐶)-acylindrically [25]. In the same paper Weidmann conjectures a common generalisation between their result and a theorem of Bestvina and Feighn [2]; which …