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相关论文: Thom irregularity and Milnor tube fibrations

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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…

微分几何 · 数学 2024-05-07 Maico Ribeiro , Ivan Santamaria , Thiago da Silva

We discuss the most general condition under which a singular local tube fibration exists. We give an application to composition of map germs.

代数几何 · 数学 2023-07-04 Ying Chen , Mihai Tibăr

We introduce the sphere fibration for real map germs with radial discriminant and we address the problem of its equivalence with the Milnor-Hamm tube fibration. Under natural conditions, we prove the existence of open book structures with…

代数几何 · 数学 2020-09-16 Raimundo N. Araújo dos Santos , Maico F. Ribeiro , Mihai Tibar

We introduce several sufficient conditions to guarantee the existence of the Milnor vector field for new classes of singularities of map germs. This special vector field is related with the equivalence problem of the Milnor fibrations for…

几何拓扑 · 数学 2018-11-01 Raimundo Araújo Dos Santos , Maico F. Ribeiro

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…

代数几何 · 数学 2024-01-25 Ying Chen , Cezar Joiţa , Mihai Tibăr

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…

代数几何 · 数学 2022-12-08 Taciana O. Souza , Cesar A. Ipanaque Zapata

In this paper, we study the topology of real analytic map-germs with isolated critical value $f: (\mathbb{R}^m,0) \to (\mathbb{R}^n,0)$, with $1 <n <m$. We compare the topology of $f$ with the topology of the compositions $\pi_i^* \circ f$,…

微分几何 · 数学 2016-04-29 Aurelio Menegon Neto , José Seade

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…

微分几何 · 数学 2016-04-19 J. Seade , K. Shabbir , J. Snoussi

We define local fibration structures for real map germs with strictly positive dimensional discriminant: a local fibration structure over the complement of the discriminant, and a complete local fibration structure which includes the…

代数几何 · 数学 2020-01-06 Maico F. Ribeiro , Raimundo N. Araújo dos Santos , Mihai Tibăr

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…

代数几何 · 数学 2011-03-17 Anne Pichon , José Seade

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…

复变函数 · 数学 2026-01-08 José Luis Cisneros Molina , Aurélio Menegon

In this paper, we introduce a new regularity condition that characterizes the tameness of a composite singularity $H=G\circ F$ in a sharp way. Our approach provides a natural tool that links the topology of the Milnor tube fibrations…

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…

几何拓扑 · 数学 2016-05-09 R. Araújo dos Santos

We describe a new algebro-geometric perspective on the study of the Milnor fibration and, as a first step toward putting it into practice, prove powerful criteria for a deformation of a holomorphic function germ to admit a stratification on…

代数几何 · 数学 2025-03-04 Alex Hof

In this paper we extend the characterization of trivial map-germs for the real Milnor fibrations started by Church and Lamotke. Our main result cover all cases on the three dimensional real Milnor fibers.

We prove fibration theorems \`a la Milnor for differentiable real maps with non isolated critical values. We study the situation for maps with linear discriminant, and prove that the concept of d-regularity is the key point for the…

代数几何 · 数学 2020-02-18 JosÉ Luis Cisneros-Molina , AurÉlio Menegon , JosÉ Seade , Jawad Snoussi

We give analytic and algebraic conditions under which a deformation of real analytic functions with non-isolated singular locus is a deformation with fibre constancy.

代数几何 · 数学 2025-03-17 Cezar Joiţa , Matteo Stockinger , Mihai Tibăr

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…

代数几何 · 数学 2014-02-26 Arnaud Bodin , Anne Pichon , Jose Seade

We prove extensions of Milnor's theorem for germs with nonisolated singularity and use them to find new classes of genuine real analytic mappings $\psi$ with positive dimensional singular locus $\Sing \psi \subset \psi^{-1}(0)$, for which…

代数几何 · 数学 2017-10-05 Mihai Tibar , Ying Chen , Raimundo N. 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…

代数几何 · 数学 2021-04-12 José Luis Cisneros-Molina , Aurélio Menegon
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