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We study the topology of the boundaries of the Milnor fibers of real analytics map-germs $f: (\mathbb{R}^M,0) \to (\mathbb{R}^K,0)$ and $f_{I}:=\Pi_{I}\circ f : (\mathbb{R}^M,0) \to (\mathbb{R}^I,0)$ that admit Milnor's tube fibrations,…

Differential Geometry · Mathematics 2023-09-01 R. Araújo dos Santos , A. Menegon , M. Ribeiro , J. Seade , I. D. Santamaria Guarín

In this paper we present new results about the topology of the Milnor fibrations of analytic function-germs with a special attention to the topology of the fibers. In particular, we provide a short review on the existence of the Milnor…

Algebraic Geometry · Mathematics 2022-12-08 Taciana O. Souza , Cesar A. Ipanaque Zapata

Milnor's fibration theorem and its generalizations play a central role in the study of singularities of complex and real analytic maps. In the complex analytic case, the Milnor fibration on the sphere is always given by the normalized map…

Complex Variables · Mathematics 2026-01-08 José Luis Cisneros Molina , Aurélio Menegon

In this paper we study the Milnor fibrations associated to real analytic map germs $\psi:(\mathbb{R}^{m},0) \to (\mathbb{R}^2,0)$ with isolated critical point at $0\in \mathbb{R}^{m}$. The main result relates the existence of called Strong…

Geometric Topology · Mathematics 2016-05-09 R. Araújo dos Santos

In [22] Milnor proved that a real analytic map $f\colon (R^n,0) \to (R^p,0)$, where $n \geq p$, with an isolated critical point at the origin has a fibration on the tube $f|\colon B_\epsilon^n \cap f^{-1}(S_\delta^{p-1}) \to…

Algebraic Geometry · Mathematics 2021-04-12 José Luis Cisneros-Molina , Aurélio Menegon

In this article we study the topology of a family of real analytic germs $F \colon (\mathbb{C}^3,0) \to (\mathbb{C},0)$ with isolated critical point at 0, given by $F(x,y,z)=f(x,y)\bar{g(x,y)}+z^r$, where $f$ and $g$ are holomorphic, $r \in…

Geometric Topology · Mathematics 2012-11-22 Haydée Aguilar-Cabrera

When f : R power n to R power p, is a surjective real analytic map with isolated critical value, we prove that the (m)-regularity condition (in a sense we define) ensures that f ||f|| is a fibration on small spheres, f induces a fibration…

Differential Geometry · Mathematics 2016-04-19 J. Seade , K. Shabbir , J. Snoussi

We prove that every map-germ ${f \bar g}: (\C^n,\0) {\to}(\C,0)$ with an isolated critical value at 0 has the Thom $a_{f \bar g}$-property. This extends Hironaka's theorem for holomorphic mappings to the case of map-germs $f \bar g$ and it…

Algebraic Geometry · Mathematics 2011-03-17 Anne Pichon , José Seade

We consider a real analytic map $F=(f_1,...,f_k) : (\mathbb{R}^n,0) \rightarrow (\mathbb{R}^k,0)$, $2 \le k \le n-1$, that satisfies Milnor's conditions (a) and (b) introduced by D. Massey. This implies that every real analytic…

Algebraic Geometry · Mathematics 2012-11-28 Nicolas Dutertre , Raimundo N. Araújo Dos Santos

Consider a singular holomorphic map-germ $f: (X,\underline{0}) \to (\mathbb C,0)$ where $X$ is a singular complex analytic variety in $\mathbb C^N$, and another holomorphic map-germ $g: (X,\underline{0}) \to (\mathbb C,0)$ which is…

Algebraic Geometry · Mathematics 2025-10-20 Lê Dũng Tráng , Juan J. Nuño-Ballesteros , José Seade

We prove a Milnor-L\^e type fibration theorem for a subanalytic map $f: X \to Y$ between subanalytic sets $X \subset \mathbb{R}^m$ and $Y \subset \mathbb{R}^n$. Moreover, if $f$ extends to an analytic map $\mathbb{R}^m \to \mathbb{R}^n$, we…

Algebraic Geometry · Mathematics 2018-06-15 Rafaella de Souza Martins , Aurélio Menegon

In this article, we study the topology of real analytic germs $F \colon (\C^3,0) \to (\C,0)$ given by $F(x,y,z)=\overline{xy}(x^p+y^q)+z^r$ with $p,q,r \in \N$, $p,q,r \geq 2$ and $(p,q)=1$. Such a germ gives rise to a Milnor fibration…

Algebraic Geometry · Mathematics 2012-11-22 Haydee Aguilar-Cabrera

We study composed map germs with respect to their local fibrations. Under most general conditions, inspired by the tameness condition that was introduced recently, we prove the existence of singular tube fibrations, and we determine the…

Algebraic Geometry · Mathematics 2024-01-25 Ying Chen , Cezar Joiţa , Mihai Tibăr

The Brasselet number of a function $f$ with nonisolated singularities describes numerically the topological information of its generalized Milnor fibre. In this work, we consider two function-germs $f,g:(X,0)\rightarrow(\mathbb{C},0)$ such…

Geometric Topology · Mathematics 2019-09-06 Hellen Santana

We find natural and convenient conditions which allow us to produce classes of genuine real map germs with Milnor tube fibration, either with Thom regularity or without it.

Algebraic Geometry · Mathematics 2019-05-01 A. J. Parameswaran , M. Tibar

In this paper, we discuss the concept of $\rho$-regularity of analytic map germs and its close relationship with the existence of locally trivial smooth fibrations, known as the Milnor fibrations. The presence of a Thom regular…

Differential Geometry · Mathematics 2024-05-07 Maico Ribeiro , Ivan Santamaria , Thiago da Silva

For analytic map germs $f: (\mathbb{R}^n, 0)\to (\mathbb{R}, 0)$ having an isolated critical value in the origin with $\dim V(f)>0$ and satisfying the transversality property of D.B. Massey we show that for $c>0$ a large enough constant,…

Algebraic Geometry · Mathematics 2021-08-17 Lars Andersen

Let f and g be holomorphic function-germs vanishing at the origin of a complex analytic germ of dimension three. Suppose that they have no common irreducible component and that the real analytic map-germ given by the multiplication of f by…

Algebraic Geometry · Mathematics 2013-04-02 Javier Fernandez de Bobadilla , Aurelio Menegon Neto

In this article, we study the topology of the family of real analytic germs $F \colon (\mathbb{C}^3,0) \to (\mathbb{C},0)$ given by $F(x,y,z)=\bar{xy}(x^p+y^q)+z^r$ with $p,q,r \in \mathbb{N}$, $p,q,r \geq 2$ and $(p,q)=1$. Such a germ has…

Geometric Topology · Mathematics 2013-05-15 Haydée Aguilar-Cabrera

In analogy with the holomorphic case, we compare the topology of Milnor fibrations associated to a meromorphic germ f/g : the local Milnor fibrations given on Milnor tubes over punctured discs around the critical values of f/g, and the…

Algebraic Geometry · Mathematics 2014-02-26 Arnaud Bodin , Anne Pichon , Jose Seade
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