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arXiv · 1410.2579

Counting cycles in labeled graphs: The nonpositive immersion property for one-relator groups

Joseph Helfer·Daniel T. Wise
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Abstract

We prove a rank 1 version of the Hanna Neumann Theorem. This shows that every one-relator 2-complex without torsion has the nonpositive immersion property. The proof generalizes to staggered and reducible 2-complexes.

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Joseph Helfer, Daniel T. Wise. 2014-10-09. Counting cycles in labeled graphs: The nonpositive immersion property for one-relator groups. https://arxiv.org/abs/1410.2579

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