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arXiv · math/9712212

The symmetry of intersection numbers in group theory

Peter Scott
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Abstract

For suitable subgroups of a finitely generated group, we define the intersection number of one subgroup with another subgroup and show that this number is symmetric. We also give an interpretation of this number.

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Peter Scott. 1998-09-07. The symmetry of intersection numbers in group theory. https://doi.org/10.2140/gt.1998.2.11

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