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We compute symplectic cohomology for Milnor fibres of certain compound Du Val singularities that admit small resolution by using homological mirror symmetry. Our computations suggest a new conjecture that the existence of a small resolution…

Symplectic Geometry · Mathematics 2022-06-09 Jonathan David Evans , Yanki Lekili

We study one parameter deformations of a pair consisting of an analytic singular space $X_0$ and a function $f_0$ on it, in case this defines an isolated singularity. We prove, under general conditions, a bouquet decomposition of the Milnor…

Algebraic Geometry · Mathematics 2007-05-23 Guangfeng Jiang , Mihai Tibar

We prove homological mirror symmetry for Milnor fibers of simple singularities in dimensions greater than one, which are among the log Fano cases of Conjecture 1.5 in arXiv:1806.04345. The proof is based on a relation between matrix…

Algebraic Geometry · Mathematics 2021-02-11 Yanki Lekili , Kazushi Ueda

We study symplectic resolutions of the Hilbert scheme of two points on a surface with one ADE-singularity. We also characterize such singularities by central fibers of their symplectic resolutions. As an application, we show that these…

Algebraic Geometry · Mathematics 2018-03-28 Ryo Yamagishi

We construct local models of isolated singularities for special K\"ahler structures in real dimension two assuming that the associated holomorphic cubic form does not have essential singularities. As an application we compute the holonomy…

Differential Geometry · Mathematics 2019-10-24 Martin Callies , Andriy Haydys

Let f_0 be a plane curve singularity. We study the Minor numbers of singularities in deformations of f_0. We completely describe the set of these Milnor numbers for homogeneous singularities f_0 in the case of non-degenerate deformations…

Algebraic Geometry · Mathematics 2016-11-17 Szymon Brzostowski , Tadeusz Krasinski , Justyna Walewska

This paper is the first part of a two part paper which introduces the study of the Whitney Equisingularity of families of Symmetric determinantal singularities. This study reveals how to use the multiplicity of polar curves associated to a…

Algebraic Geometry · Mathematics 2020-03-30 Terence Gaffney , Michelle Molino

We study codimension two determinantal varieties with isolated singularities. These singularities admit a unique smoothing, thus we can define their Milnor number as the middle Betti number of their generic fiber. For surfaces in C^4, we…

Algebraic Geometry · Mathematics 2011-11-29 Miriam da Silva Pereira , Maria Aparecida Soares Ruas

We study Milnor fibers of complexified real line arrangements. We give a new algorithm computing monodromy eigenspaces of the first cohomology. The algorithm is based on the description of minimal CW-complexes homotopic to the complements,…

Algebraic Geometry · Mathematics 2014-05-26 Masahiko Yoshinaga

We compute the motivic Milnor fiber of a complex plane curve singularity in an inductive and combinatoric way using the extended simplified resolution graph. The method introduced in this article has a consequence that one can study the…

Algebraic Geometry · Mathematics 2017-03-16 Le Quy Thuong

We show that the base spaces of the semiuniversal unfoldings of some weighted homogeneous singularities can be identified with moduli spaces of $A_\infty$-structures on the trivial extension algebras of the endomorphism algebras of the…

Algebraic Geometry · Mathematics 2022-03-21 Yanki Lekili , Kazushi Ueda

We study the Milnor monodromies of non-isolated hypersurface singularities and show that the reduced cohomology groups of the Milnor fibers are concentrated in the middle degree for some eigenvalues of the monodromies. As an application of…

Algebraic Geometry · Mathematics 2018-11-22 Takahiro Saito

We introduce a notion of a homological index of a holomorphic 1-form on a germ of a complex analytic variety with an isolated singularity, inspired by X. G\'omez-Mont and G.-M. Greuel. For isolated complete intersection singularities it…

Algebraic Geometry · Mathematics 2007-05-23 W. Ebeling , S. M. Gusein-Zade , J. 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

We review properties of affine special Kaehler structures focusing on singularities of such structures in the simplest case of real dimension two. We describe all possible isolated singularities and compute the monodromy of the flat…

Differential Geometry · Mathematics 2019-09-13 Martin Callies , Andriy Haydys

We compute the symplectic cohomology of Milnor fibers of isolated quasihomogeneous cAn singularities . In addition, we use our computations to distinguish their links as contact manifolds and to provide further evidence to a conjecture of…

Symplectic Geometry · Mathematics 2024-07-12 Nikolas Adaloglou , Federica Pasquotto , Aline Zanardini

For plane curve singularities we construct a mixed Hodge structure (MHS) over the integers on the fundamental group of the Milnor fiber. The concept nearby fundamental group is introduced and we develop a theory of iterated integrals along…

Algebraic Geometry · Mathematics 2007-05-23 Rainer H. Kaenders

In the early days of the Floer theory, Atiyah asked if there is a Milnor fiber description of the Floer homology of the links of singularities. We answer this question for the Brieskorn-Hamm complete intersection singularities. The…

Geometric Topology · Mathematics 2024-10-23 Kyoung-Seog Lee , Anatoly Libgober , Nikolai Saveliev

We study possible configurations of singular points occuring on general algebraic curves in $\mathbb{C}P^2$ via Floer theory. To achieve this, we describe a general formula for the $H_{1}$-action on the knot Floer complex of the…

Geometric Topology · Mathematics 2025-01-01 Maciej Borodzik , Beibei Liu , Ian Zemke

We can associate with any irreducible curve singularity (ics) a numerical semigroup. Two ics are said to be equisingular if they have the same semigroup. Two equisingular ics have the same Milnor number. Conversely, The set of ics with a…

Algebraic Geometry · Mathematics 2007-05-23 Abdallah Assi , Margherita Barile