Geometry & Topology 2 (1998) 333–335

DOI: 10.2140/gt.1998.2.333

Correction to Geometry & Topology 2 (1998) 11–29

arXiv: math.GT/9712212

Abstract

Theorem 3.1 of “The symmetry of intersection numbers in group theory” is false: the error occurs in the proof of Lemma 3.6. A counterexample is given.

Keywords

ends, amalgamated free products, trees

Mathematical Subject Classification

Primary: 20F32

Secondary: 20E06, 20E07, 20E08, 57M07

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