scientific article

zbMath0423.20023MaRDI QIDQ3856928

G. P. Scott, Charles Terence Clegg Wall

Publication date: 1979

Title: zbMATH Open Web Interface contents unavailable due to conflicting licenses.

fundamental group indecomposable groups groups acting on trees HNN-extension covering space graph of groups ends of groups free product finitely generated group free product with amalgamation subgroup theorems for free products with amalgamation

Mathematics Subject Classification ID

Covering spaces and low-dimensional topology (57M10) Subgroup theorems; subgroup growth (20E07) General structure theorems for groups (20E34) Generators, relations, and presentations of groups (20F05) Geometric group theory (20F65) Graphs and abstract algebra (groups, rings, fields, etc.) (05C25) Obstruction theory in algebraic topology (55S35) Relations of low-dimensional topology with graph theory (57M15) Fundamental group, presentations, free differential calculus (57M05) Free products of groups, free products with amalgamation, Higman-Neumann-Neumann extensions, and generalizations (20E06) Fundamental groups and their automorphisms (group-theoretic aspects) (20F34)

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