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Generic relative immersions of compact one-manifolds in the closed unit disk, i.e. divides, provide a powerful combinatorial framework, and allow a topological construction of fibered classical links, for which the monodromy diffeomorphism…

Geometric Topology · Mathematics 2025-03-14 Norbert A'Campo , Pablo Portilla Cuadrado

The image of a finitely determined holomorphic germ $\Phi$ from $\mathbb{C}^2$ to $\mathbb{C}^3$ defines a hypersurface singularity $(X,0)$, which is in general non-isolated. We show that the diffeomorphism type of the boundary of the…

Geometric Topology · Mathematics 2025-05-02 Gergő Pintér , Tamás Terpai

We study the symplectic topology of some finite algebraic quotients of the An Milnor fibre which are diffeomorphic to the rational homology balls that appear in Fintushel and Stern's rational blowdown construction. We prove that these…

Symplectic Geometry · Mathematics 2012-10-03 Yanki Lekili , Maksim Maydanskiy

We give a sufficient condition for the existence of a holomorphic tubular neighborhood of a compact Riemann surface holomorphically embedded in a non-singular complex surface. Our sufficient condition is described by an arithmetical…

Complex Variables · Mathematics 2024-02-13 Satoshi Ogawa

In this paper we show that the geometric monodromy $\phi$ of the Milnor fibre, has finite order q if and only if the operator $\phi^q_*$ acts trivially on the homology. The proof is based on the classical methods of surgery.

Algebraic Geometry · Mathematics 2007-05-23 Nikolai A. Krylov

This is a review article on the combinatorial aspects of the mixed Hodge structure of a Milnor fibre of the isolated hypersurface singularity. We give a purely combinatorial method to compute spectral pairs of the singularity under the…

Algebraic Geometry · Mathematics 2007-05-23 Susumu Tanabé

We study the duality between M-theory on compact holonomy G2-manifolds and the heterotic string on Calabi-Yau three-folds. The duality is studied for K3-fibered G2-manifolds, called twisted connected sums, which lend themselves to an…

High Energy Physics - Theory · Physics 2018-05-23 Andreas P. Braun , Sakura Schafer-Nameki

The integral variation map and algebraic monodromy of isolated plane curve singularities are important homological invariants of the singularity which are still far from being completely understood. This work provides effective ways of…

Algebraic Geometry · Mathematics 2025-12-08 Pablo Portilla Cuadrado , Baldur Sigurðsson

We say that a complex analytic space, $X$, is an intersection cohomology manifold if and only if the shifted constant sheaf on $X$ is isomorphic to intersection cohomology; this is quickly seen to be equivalent to $X$ being a homology…

Algebraic Geometry · Mathematics 2007-05-23 David B. Massey

Given a germ of an analytic variety $X$ and a germ of a holomorphic function $f$ with a stratified isolated singularity with respect to the logarithmic stratification of $X$, we show that under certain conditions on the singularity type of…

Complex Variables · Mathematics 2022-12-06 Carles Bivià-Ausina , Konstantinos Kourliouros , Maria Aparecida Soares Ruas

Two linear recurrences exhibit mirror symmetry connecting the constants $e$ and $\pi$. When parametrized, their asymptotic connection constants extend to meromorphic functions satisfying additive functional equations with rational…

Number Theory · Mathematics 2026-01-09 Benoit Cloitre

T. Mostowski showed that every (real or complex) germ of an analytic set is homeomorphic to the germ of an algebraic set. In this paper we show that every (real or complex) analytic function germ, defined on a possibly singular analytic…

Algebraic Geometry · Mathematics 2014-01-23 Marcin Bilski , Adam Parusinski , Guillaume Rond

Let $X$ be a germ of real analytic vector field at $({\mathbb R}^{2},0)$ with an algebracally isolated singularity. We say that $X$ is a topological generalized curve if there are no topological saddle-nodes in its reduction of…

Dynamical Systems · Mathematics 2019-12-02 Eduardo Cabrera , Rogério Mol

Our first result is that a homogeneous form $F$ in $n$ variables is GIT semistable with respect to the natural $SL(n)$-action if and only if the first non-trivial Hilbert point of the associated Milnor algebra is semistable. We also prove…

Algebraic Geometry · Mathematics 2018-12-04 Maksym Fedorchuk

Let f be an isolated plane curve singularity with Milnor fiber of genus at least 5. For all such f, we give (a) an intrinsic description of the geometric monodromy group that does not invoke the notion of the versal deformation space, and…

Geometric Topology · Mathematics 2021-12-08 Pablo Portilla Cuadrado , Nick Salter

In this article we investigate mixed polynomials and present conditions that can be applied on a specific class of polynomials in order to prove the existence of the Milnor Fibration, Milnor-L\^e Fibration and the equivalence between them.…

Algebraic Geometry · Mathematics 2020-03-03 N. G. Grulha , R. S. Martins

Let p be a fibration of simply connected CW complexes with finite base B and fibre F. Let aut_1(p) denote the identity component of the space of all fibre-homotopy self-equivalences of p and Baut_1(p) the classifying space for this…

Algebraic Topology · Mathematics 2011-11-21 Urtzi Buijs , Samuel B. Smith

We define motivic Milnor fiber of cyclic $L_\infty$-algebras of dimension three using the method of Denef and Loeser of motivic integration. It is proved by Nicaise and Sebag that the topological Euler characteristic of the motivic Milnor…

Algebraic Geometry · Mathematics 2010-02-19 Yunfeng Jiang

A central question in arrangement theory is to determine whether the characteristic polynomial $\Delta_q$ of the algebraic monodromy acting on the homology group $H_q(F(\mathcal{A}),\mathbb{C})$ of the Milnor fiber of a complex hyperplane…

Algebraic Geometry · Mathematics 2017-06-13 Stefan Papadima , Alexander I. Suciu

The main question we target is the following: If one fixes a topological type of a complex normal surface singularity then what are the possible analytic types supported by it, and/or, what are the possible values of the geometric genus? We…

Algebraic Geometry · Mathematics 2017-11-10 András Némethi , Tomohiro Okuma