A normal form in the homeotopy group of a surface of genus 2, with applications to 3-manifolds. (English) Zbl 0253.55001


57M05 Fundamental group, presentations, free differential calculus
57N05 Topology of the Euclidean \(2\)-space, \(2\)-manifolds (MSC2010)
20F34 Fundamental groups and their automorphisms (group-theoretic aspects)
20F05 Generators, relations, and presentations of groups
20F10 Word problems, other decision problems, connections with logic and automata (group-theoretic aspects)
20E36 Automorphisms of infinite groups
57S30 Discontinuous groups of transformations
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