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Moderately Discontinuous Homology 

Fernández de Bobadilla, J.Autoridad BCAM; Heinze, S.; Sampaio, J.E. (2021-01-01)
We introduce a new metric homology theory, which we call Moderately Discontinuous Homology, designed to capture Lipschitz properties of metric singular subanalytic germs. The main novelty of our approach is to allow ...
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The Nash Problem from Geometric and Topological Perspective 

Fernández de Bobadilla, J.Autoridad BCAM; Pe Pereira, M. (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 ...
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A jacobian module for disentanglements and applications to Mond's conjecture 

Fernández de Bobadilla, J.Autoridad BCAM; Nuño-Ballesteros, J.J.; Peñafort Sanchis, Guillermo (2019)
Let $f:(\mathbb C^n,S)\to (\mathbb C^{n+1},0)$ be a germ whose image is given by $g=0$. We define an $\mathcal O_{n+1}$-module $M(g)$ with the property that $\mathscr A_e$-$\operatorname{codim}(f)\le \dim_\mathbb C M(g)$, ...
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Multiplicity and degree as bi‐Lipschitz invariants for complex sets 

Fernandes, A.; Fernández de Bobadilla, J.Autoridad BCAM; Sampaio, J.E. (2018-08-29)
We study invariance of multiplicity of complex analytic germs and degree of complex affine sets under outer bi-Lipschitz transformations (outer bi-Lipschitz homeomorphims of germs in the first case and outer bi-Lipschitz ...
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The Nash Problem from a Geometric and Topological Perspective 

Fernández de Bobadilla, J.Autoridad BCAM; Pe Pereira, M. (2018-04-17)
We survey the proof of the Nash conjecture for surfaces and show how geometric and topological ideas developed in previous articles by the au- thors influenced it. Later we summarize the main ideas in the higher dimen- ...
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On the generalized Nash problem for smooth germs and adjacencies of curve singularities 

Fernández de Bobadilla, J.Autoridad BCAM; Pe Pereira, M.; Popescu-Pampu, P. (2017-12-10)
In this paper we explore the generalized Nash problem for arcs on a germ of smooth surface: given two prime divisors above its special point, to determine whether the arc space of one of them is included in the arc space ...
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Representation of surface homeomorphisms by tête-à-tête graphs 

Fernández de Bobadilla, J.Autoridad BCAM; Pe Pereira, M.; Portilla Cuadrado, P. (2017-06-21)
We use tête-à-tête graphs as defined by N. A'campo and extended versions to codify all periodic mapping classes of an orientable surface with non-empty boundary, improving work of N. A'Campo and C. Graf. We also introduce ...
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A Jacobian module for disentanglements and applications to Mond's conjecture 

Fernández de Bobadilla, J.Autoridad BCAM; Nuño-Ballesteros, J.J.; Peñafort Sanchis, Guillermo (2017-01-10)
[TBA]
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Equisingularity in One-Parameter Families of Generically Reduced Curves 

Fernández de Bobadilla, J.Autoridad BCAM; Snoussi, J.; Spivakovsky, M. (2016-01-01)
We explore some equisingularity criteria in one-parameter families of generically reduced curves. We prove the equivalence between Whitney regularity and Zariski’s discriminant criterion. We prove that topological triviality ...

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Author
Fernández de Bobadilla, J. (9)
Pe Pereira, M. (4)Nuño-Ballesteros, J.J. (2)Peñafort Sanchis, Guillermo (2)Sampaio, J.E. (2)Fernandes, A. (1)Heinze, S. (1)Popescu-Pampu, P. (1)Portilla Cuadrado, P. (1)Snoussi, J. (1)... másSubjectAdjacency of singularities (1)Ae-codimension (1)Approximate roots (1)Arc spaces (1)Image Milnor number (1)Image Milnor number, Ae-codimension, weighted homogeneous. (1)Nash Problem (1)Plane curves (1)weighted homogeneous (1)... másFecha2021 (1)2020 (1)2019 (1)2018 (2)2017 (3)2016 (1)

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