Homotopy classification of $4$-manifolds with fundamental group $\mathbb{Z}/p \rtimes \mathbb{Z}$

Kamen Pavlov

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arXiv · 2608.03245

Homotopy classification of $4$-manifolds with fundamental group $\mathbb{Z}/p \rtimes \mathbb{Z}$

Kamen Pavlov

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Abstract

For an odd prime $p$, we show that the homotopy type of a closed $4$-manifold with fundamental group $\mathbb{Z}/p \rtimes \mathbb{Z}$ is determined by its quadratic $2$-type together with an additional $\mathbb{Z}/p$-valued intersection form. We also give a generalization to infinite groups of a result of Hambleton--Kreck on the polarized homotopy classification of Poincaré $4$-complexes, and we prove some partial results on the homotopy classification that are applicable more generally.

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BibTeX RIS

Kamen Pavlov. 2026-08-04. Homotopy classification of $4$-manifolds with fundamental group $\mathbb{Z}/p \rtimes \mathbb{Z}$. https://arxiv.org/abs/2608.03245

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