English

Embeddings of mapping tori for end-periodic graph maps

Geometric Topology 2025-11-20 v1 Dynamical Systems

Abstract

End-periodic homotopy equivalences of infinite, locally finite graphs serve as dimension-one analogs of the end-periodic automorphisms traditionally defined on infinite-type surfaces. We demonstrate that if Γ\Gamma is an infinite graph with finitely many ends, and g ⁣:ΓΓg \colon \Gamma \to \Gamma is end-periodic, then its mapping torus ZgZ_g admits a flowline-preserving homotopy equivalence with a finite 2-complex. With additional hypotheses on gg, this compactified mapping torus subsequently embeds in the mapping torus of a homotopy equivalence on a finite-rank graph via a π1\pi_1-injective, flow-preserving map. We prove that every mapping class of Γ\Gamma arising from an end-periodic homotopy equivalence contains a representative whose mapping torus realizes such an embedding.

Keywords

Cite

@article{arxiv.2511.14976,
  title  = {Embeddings of mapping tori for end-periodic graph maps},
  author = {Adam R. Smith},
  journal= {arXiv preprint arXiv:2511.14976},
  year   = {2025}
}

Comments

37 pages, 13 figures