{ "id": "2307.06227", "version": "v1", "published": "2023-07-12T15:18:55.000Z", "updated": "2023-07-12T15:18:55.000Z", "title": "New examples of Z/2 harmonic 1-forms and their deformations", "authors": [ "Andriy Haydys", "Rafe Mazzeo", "Ryosuke Takahashi" ], "categories": [ "math.DG", "math.AP" ], "abstract": "We collect a number of elementary constructions of $\\mathbb Z_2$ harmonic $1$-forms, and of families of these objects. These examples show that the branching set $\\Sigma$ of a $\\mathbb Z_2$ harmonic 1-form may exhibit the following features: i) $\\Sigma$ may be a non-trivial link; ii) $\\Sigma$ may be a multiple cover; iii) $\\Sigma$ may be immersed, and appear as a limit of smoothly embedded branching loci; iv) there are families of $\\mathbb Z_2$ harmonic $1$-forms whose branching sets $\\Sigma$ have tangent cones filling out a positive dimensional space, even modulo isometries.", "revisions": [ { "version": "v1", "updated": "2023-07-12T15:18:55.000Z" } ], "analyses": { "keywords": [ "deformations", "branching set", "positive dimensional space", "elementary constructions", "tangent cones" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }