{"paper":{"title":"Normalization of singular contact forms and primitive 1-forms","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["math-ph","math.DS","math.MP"],"primary_cat":"math.DG","authors_text":"Kai Jiang, Nguyen Tien Zung, Truong Hong Minh","submitted_at":"2018-04-17T13:33:35Z","abstract_excerpt":"A differential 1-form $\\alpha$ on a manifold of odd dimension $2n+1$, which satisfies the contact condition $\\alpha \\wedge (d\\alpha)^n \\neq 0$ almost everywhere, but which vanishes at a point $O$, i.e. $\\alpha (O) = 0$, is called a \\textit{singular contact form} at $O$. The aim of this paper is to study local normal forms (formal, analytic and smooth) of such singular contact forms. Our study leads naturally to the study of normal forms of singular primitive 1-forms of a symplectic form $\\omega$ in dimension $2n$, i.e. differential 1-forms $\\gamma$ which vanish at a point and such that $d\\gamm"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1804.06232","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}