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Thom property and Milnor-Le fibration for analytic maps
Mid Sweden University, Faculty of Science, Technology and Media, Department of Computer and Electrical Engineering (2023-). Univ Fed Paraiba, Dept Math, Joao Pessoa, Paraiba, Brazil..
2023 (English)In: Mathematische Nachrichten, ISSN 0025-584X, E-ISSN 1522-2616, Vol. 296, no 8, p. 3481-3491Article in journal (Refereed) Published
Abstract [en]

Let (X, 0) be the germ of either a subanalytic set X subset of Rn$X \subset {\mathbb {R}}<^>n$ or a complex analytic space X subset of Cn$X \subset {\mathbb {C}}<^>n$, and let f:(X,0)->(Kk,0)$f: (X,0) \rightarrow ({\mathbb {K}}<^>k, 0)$ be a K${\mathbb {K}}$-analytic map-germ, with K=R${\mathbb {K}}={\mathbb {R}}$ or C${\mathbb {C}}$, respectively. When k=1$k=1$, there is a well-known topological locally trivial fibration associated with f, called the Milnor-Le fibration of f, which is one of the main pillars in the study of singularities of maps and spaces. However, when k>1$k>1$ that is not always the case. In this paper, we give conditions which guarantee that the image of f is well-defined as a set-germ, and that f admits a Milnor-Le fibration. We also give conditions for f to have the Thom property. Finally, we apply our results to mixed function-germs of type fg over bar :(X,0)->(C,0)$f \bar{g}: (X,0) \rightarrow ({\mathbb {C}},0)$ on a complex analytic surface X subset of Cn$X \subset {\mathbb {C}}<^>n$ with arbitrary singularity.

Place, publisher, year, edition, pages
John Wiley & Sons, 2023. Vol. 296, no 8, p. 3481-3491
Keywords [en]
milnor fibration, Thom property, Whitney stratifications
National Category
Other Mathematics Geometry
Identifiers
URN: urn:nbn:se:miun:diva-48516DOI: 10.1002/mana.202100518ISI: 000997560600001Scopus ID: 2-s2.0-85161196778OAI: oai:DiVA.org:miun-48516DiVA, id: diva2:1768580
Available from: 2023-06-15 Created: 2023-06-15 Last updated: 2023-09-01Bibliographically approved

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Menegon, Aurelio

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