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On the topological complexity of non-simply connected spaces

Algebraic Topology 2026-03-11 v1

Abstract

Topological complexity is a numerical homotopy invariant that measures the instability of motion planning in a space. To study the topological complexity of non-simply connected spaces, Costa and Farber introduced a cohomology class whose nilpotency gives a lower bound of topological complexity. Farber and Mescher constructed a spectral sequence that evaluates this nilpotency without direct computation. We extend these results with respect to a group homomorphism. As an application, we determine the topological complexity of some 3-manifolds with nonabelian fundamental group.

Keywords

Cite

@article{arxiv.2603.09407,
  title  = {On the topological complexity of non-simply connected spaces},
  author = {Yuki Minowa},
  journal= {arXiv preprint arXiv:2603.09407},
  year   = {2026}
}

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14 pages