Construction of $\mathbb{Z}_2$-harmonic 1-forms on closed 3-manifolds with long cylindrical necks

Fuente: arXiv
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Main Author: Salm, Willem Adriaan
Format: Preprint
Published: 2024
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author Salm, Willem Adriaan
author_facet Salm, Willem Adriaan
contents In this paper, we give an explicit construction of families of $\mathbb{Z}_2$-harmonic 1-forms that degenerate to manifolds with cylindrical ends. We do this by considering certain linear combinations of $L^2$-bounded $\mathbb{Z}_2$-harmonic 1-forms and by modifying the metric near the link. This construction can always be done if the homology group that counts $L^2$-bounded $\mathbb{Z}_2$-harmonic 1-forms is sufficiently large. This has the consequence that every smooth link can be obtained as the singular set of a $\mathbb{Z}_2$-harmonic 1-form on some 3-manifold.
format Preprint
id arxiv_https___arxiv_org_abs_2410_07015
institution arXiv
publishDate 2024
record_format arxiv
spellingShingle Construction of $\mathbb{Z}_2$-harmonic 1-forms on closed 3-manifolds with long cylindrical necks
Salm, Willem Adriaan
Differential Geometry
53C99
In this paper, we give an explicit construction of families of $\mathbb{Z}_2$-harmonic 1-forms that degenerate to manifolds with cylindrical ends. We do this by considering certain linear combinations of $L^2$-bounded $\mathbb{Z}_2$-harmonic 1-forms and by modifying the metric near the link. This construction can always be done if the homology group that counts $L^2$-bounded $\mathbb{Z}_2$-harmonic 1-forms is sufficiently large. This has the consequence that every smooth link can be obtained as the singular set of a $\mathbb{Z}_2$-harmonic 1-form on some 3-manifold.
title Construction of $\mathbb{Z}_2$-harmonic 1-forms on closed 3-manifolds with long cylindrical necks
topic Differential Geometry
53C99
url https://arxiv.org/abs/2410.07015