## Search

Now showing items 1-10 of 11

#### Classification of Lipschitz simple function germs

(2020-07-01)

It was shown by Henry and Parusiński in 2003 that the bi-Lipschitz right equivalence of function germs admits moduli. In this article, we introduce the notion of Lipschitz simple function germ and present the complete ...

#### Globally subanalytic CMC surfaces in $\mathbb{R}^3$ with singularities

(2020-03-02)

In this paper we present a classification of a class of globally subanalytic CMC surfaces in $\mathbb{R}^3$ that generalizes the recent classification made by Barbosa and do Carmo in 2016. We show that a globally subanalytic ...

#### The Nash Problem from Geometric and Topological Perspective

(2020-03-01)

We survey the proof of the Nash conjecture for surfaces and show how geometric and topological ideas developed in previous articles by the authors influenced it. Later, we summarize the main ideas in the higher dimensional ...

#### Multiplicity, regularity and blow-spherical equivalence of complex analytic sets

(2020-01-29)

This paper is devoted to study multiplicity and regularity of complex analytic sets. We present an equivalence for complex analytical sets, named blow-spherical equivalence and we obtain several applications with this new ...

#### Multiplicity of singularities is not a bi-Lipschitz invariant

(2020-01-17)

It was conjectured that multiplicity of a singularity is bi-Lipschitz invariant. We disprove this conjecture constructing examples of bi-Lipschitz equivalent complex algebraic singularities with different values of multiplicity.

#### Reflection maps

(2020)

Given a reflection group G acting on a complex vector space V , a reflection map is the composition of an embedding X → V with the quotient map V → Cp of G. We show how these maps, which can highly singular, may be studied ...

#### Local Topological Obstruction For Divisors

(2020)

Given a smooth, projective variety $X$ and
an effective divisor $D\,\subseteq\, X$, it is well-known that
the (topological) obstruction
to the deformation of the fundamental class of $D$ as a Hodge class,
lies in ...

#### Parametrization simple irreducible plane curve singularities in arbitrary characteristic

(2020-01-01)

We study the classification of plane curve singularities in arbitrary characteristic. We first give a bound for the determinacy of a plane curve singularity with respect to pararametrization equivalence in terms of its ...

#### Some classes of homeomorphisms that preserve multiplicity and tangent cones

(2020-01-01)

In this paper we present some applications of A’Campo-Lˆe’s Theorem and we study some relations between Zariski’s Questions A and B. It is presented some classes of homeomorphisms that preserve multiplicity and tangent ...

#### Decomposition theorem and torus actions of complexity one

(2020)

We algorithmically compute the intersection cohomology Betti numbers of any complete normal algebraic variety with a torus action of complexity one.