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Given a link of a normal surface singularity with its canonical contact structure, we compare the collection of its Stein fillings to its Milnor fillings (that is, Milnor fibers of possible smoothings). We prove that, unlike Stein fillings,…

几何拓扑 · 数学 2025-04-14 R. Inanc Baykur , A. Nemethi , O. Plamenevskaya

We prove that the boundaries of the Milnor fibers of smoothings of non-isolated reduced complex surface singularities are graph manifolds. Moreover, we give a method, inspired by previous work of N\'emethi and Szilard, to compute associated…

代数几何 · 数学 2020-06-23 Octave Curmi

We compare Stein fillings and Milnor fibers for rational surface singularities with reduced fundamental cycle. Deformation theory for this class of singularities was studied by de Jong-van Straten in [dJvS98]; they associated a germ of a…

几何拓扑 · 数学 2023-06-14 Olga Plamenevskaya , Laura Starkston

The sandwiched surface singularities are those rational surface singularities which dominate birationally smooth surface singularities. de Jong and van Straten showed that one can reduce the study of the deformations of a sandwiched surface…

代数几何 · 数学 2012-12-27 Andras Nemethi , Patrick Popescu-Pampu

We study Milnor fibers and symplectic fillings of links of sandwiched singularities, with the goal of contrasting their algebro-geometric deformation theory and symplectic topology. In the algebro-geometric setting, smoothings of sandwiched…

几何拓扑 · 数学 2026-02-12 Olga Plamenevskaya , Laura Starkston

Normally one assumes isolated surface singularities to be normal. The purpose of this paper is to show that it can be useful to look at nonnormal singularities. By deforming them interesting normal singularities can be constructed, such as…

代数几何 · 数学 2015-12-14 Jan Stevens

We give a survey on some aspects of deformations of isolated singularities. In addition to the presentation of the general theory, we report on the question of the smoothability of a singularity and on relations between different…

代数几何 · 数学 2019-03-12 Gert-Martin Greuel

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…

代数几何 · 数学 2018-11-22 Takahiro Saito

We determine a one-to-one correspondence between Milnor fibers and minimal symplectic fillings of a quotient surface singularity (up to diffeomorphism type) by giving an explicit algorithm to compare them mainly via techniques from the…

代数几何 · 数学 2018-03-01 Heesang Park , Jongil Park , Dongsoo Shin , Giancarlo Urzúa

This brief survey of some singularity invariants related to Milnor fibers should serve as a quick guide to references. We attempt to place things into a wide geometric context while leaving technicalities aside. We focus on relations among…

代数几何 · 数学 2011-02-18 Nero Budur

We study the monodromy diffeomorphism of Milnor fibrations of isolated complex surface singularities, by computing the family Seiberg--Witten invariant of Seifert-fibered Dehn twists using recent advances in monopole Floer homology. More…

几何拓扑 · 数学 2024-09-19 Hokuto Konno , Jianfeng Lin , Anubhav Mukherjee , Juan Muñoz-Echániz

In this paper we show that if the minimal good resolution graph of a normal surface singularity contains at least two nodes (i.e. vertex with valency at least 3) then the singularity does not admit a smoothing with Milnor fiber having…

代数几何 · 数学 2014-05-08 Heesang Park , Dongsoo Shin , András I. Stipsicz

For any finitely presentable group $G$, we show the existence of an isolated complex surface singularity link which admits infinitely many exotic Stein fillings such that the fundamental group of each filling is isomorphic to $G$. We also…

几何拓扑 · 数学 2018-07-11 Anar Akhmedov , Burak Ozbagci

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…

代数几何 · 数学 2014-09-24 Mutsuo Oka

We consider open symplectic manifolds which admit dilations (in the sense previously introduced by Solomon and the author). We obtain restrictions on collections of Lagrangian submanifolds which are pairwise disjoint (or pairwise…

辛几何 · 数学 2015-06-16 Paul Seidel

We give in this work an explicit combinatorial algorithm for the description of the Milnor fiber of a Newton non degenerate surface singularity as a graph manifold. This is based on a previous work by the author describing a general method…

代数几何 · 数学 2020-05-15 Octave Curmi

We recover the Newton diagram (modulo a natural ambiguity) from the link for any surface hypersurface singularity with non-degenerate Newton principal part whose link is a rational homology sphere. As a corollary, we show that the link…

代数几何 · 数学 2007-05-23 Gabor Braun , Andras Nemethi

We study the topology of a line singularity, which is a complex hypersurface with non-isolated singularity given by a complex line. We describe the degeneration of its Milnor fibre to the singular hypersurface by means of a pair of…

复变函数 · 数学 2014-12-01 Aurélio Menegon Neto

We find all $P$-resolutions of quotient surface singularities (especially, tetrahedral, octahedral, and icosahedral singularities) together with their dual graphs, which reproduces Jan Steven's list [Manuscripta Math. 1993] of the numbers…

代数几何 · 数学 2018-03-02 Byoungcheon Han , Jaekwan Jeon , Dongsoo Shin

In a recent paper of Akhmedov, Etnyre, Mark and Smith, it was shown that there exist infinitely many contact Seifert fibered 3-manifolds each of which admits infinitely many exotic (homeomorphic but pairwise non-diffeomorphic)…

几何拓扑 · 数学 2014-05-16 Anar Akhmedov , Burak Ozbagci
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