Splittings of groups and intersection numbers
classification
🧮 math.GT
math.GR
keywords
curveintersectionnumbersimplesurfacezeroalgebraicanalogues
read the original abstract
We prove algebraic analogues of the facts that a curve on a surface with self-intersection number zero is homotopic to a cover of a simple curve, and that two simple curves on a surface with intersection number zero can be isotoped to be disjoint.
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