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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

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 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

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 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…

Algebraic Geometry · Mathematics 2025-03-04 Alex Hof

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

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 $\pi_i^* \circ f$,…

Differential Geometry · Mathematics 2016-04-29 Aurelio Menegon Neto , José Seade

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 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…

Algebraic Geometry · Mathematics 2020-02-18 JosÉ Luis Cisneros-Molina , AurÉlio Menegon , JosÉ Seade , Jawad Snoussi

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

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…

Geometric Topology · Mathematics 2018-11-01 Raimundo Araújo Dos Santos , Maico F. Ribeiro

Milnor's fibration theorem is about the geometry and topology of real and complex analytic maps near their critical points, a ubiquitous theme in mathematics. As such, after 50 years, this has become a whole area of research on its own,…

Algebraic Geometry · Mathematics 2018-10-23 Jose Seade

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…

Algebraic Geometry · Mathematics 2020-09-16 Raimundo N. Araújo dos Santos , Maico F. Ribeiro , Mihai Tibar

Convenient mixed functions with strongly non-degenerate Newton boundaries have Milnor fibrations, as the isolatedness of the singularity follows from the convenience. In this paper, we consider the Milnor fibration for non-convenient mixed…

Algebraic Geometry · Mathematics 2014-09-24 Mutsuo Oka

We state and prove several characterizations of Thom's regularity condition for stratified maps. In particular we extend to stratified maps some characterizations of Whitney (a) regularity, due to the second author.

Algebraic Geometry · Mathematics 2015-04-30 Saurabh Trivedi , David Trotman

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…

Algebraic Geometry · Mathematics 2023-07-11 R. N. Araújo dos Santos , D. Dreibelbis , M. F. Ribeiro , I. D. Santamaría Guarín

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

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

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 paper the problem of the existence of regular nut graphs is addressed. A generalization of Fowler's Construction which is a local enlargement applied to a vertex in a graph is introduced to generate nut graphs of higher order. Let…

Combinatorics · Mathematics 2019-11-13 John Baptist Gauci , Tomaz Pisanski , Irene Sciriha
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