Now showing items 1-20 of 126

    • A generalized Stefan model accounting for system memory and non-locality 

      Garra R.; Falcini F.; Voller V.R.; Pagnini G. (International Communications in Heat and Mass Transfer, 2020-05)
      The Stefan problem, involving the tracking of an evolving phase-change front, is the prototypical example of a moving boundary problem. In basic one- dimensional problems it is well known that the front advances as the ...
    • Some classes of homeomorphisms that preserve multiplicity and tangent cones 

      Sampaio J. E. (AMERICAN MATHEMATICAL SOCIETY, 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 ...
    • The Nash Problem from Geometric and Topological Perspective 

      Fernández de Bobadilla J.; Pe Pereira M. (WORLD SCIENTIFIC (EUROPE), 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 ...
    • A hypothesis about parallelism vs. seriality in dreams 

      Barcaro U.; Paradisi P.; Sebastiani L. (Front. Psychol., 2019-10-10)
      The current article discusses the hypothesis about parallelism vs. Seriality in dreams. The process of dream building implies the construction of a complex network of closely interrelated sources. On the other hand, the ...
    • Equivariant motivic integration and proof of the integral identity conjecture for regular functions 

      Le, Q.; Nguyen H.D. (Mathematische Annalen, 2019-12-02)
      We develop Denef-Loeser’s motivic integration to an equivariant version and use it to prove the full integral identity conjecture for regular functions. In comparison with Hartmann’s work, the equivariant Grothendieck ...
    • Topological invariants of plane curve singularities: Polar quotients and Lojasiewicz gradient exponents 

      Nguyen H.D.; Pham T.-S.; Hoàng P.-D (International Journal of Mathematics, 2019-10-21)
      In this paper, we study polar quotients and Łojasiewicz exponents of plane curve singularities, which are not necessarily reduced. We first show that, for complex plane curve singularities, the set of polar quotients is a ...
    • Globally subanalytic CMC surfaces in $\mathbb{R}^3$ with singularities 

      Sampaio J. E. (Proceedings A of the Royal Society of Edinburgh, 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 ...
    • Multiplicity, regularity and blow-spherical equivalence of complex analytic sets 

      Sampaio J. E. (The Asian Journal of Mathematics, 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 ...
    • Neron models of intermediate Jacobians associated to moduli spaces 

      Dan A.; Kaur I. (Revista Matemática Complutense, 2019-12-01)
      Let $\pi_1:\mathcal{X} \to \Delta$ be a flat family of smooth, projective curves of genus $g \ge 2$, degenerating to an irreducible nodal curve $X_0$ with exactly one node. Fix an invertible sheaf $\mathcal{L}$ on $\mathcal{X}$ ...
    • Multiplicity of singularities is not a bi-Lipschitz invariant 

      Birbrair L.; Fernandes A.; Sampaio J. E.; Verbitsky M. (Mathematische Annalen, 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.
    • Some classes of homeomorphisms that preserve multiplicity and tangent cones 

      Sampaio J. E. (Contemporary Mathematics, 2019-05-28)
      In this paper we present some applications of A'Campo-Lê'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 cones ...
    • Moderately Discontinuous Algebraic Topology for Metric Subanalytic Germs 

      Heinze S. (2019-10-31)
      We have developed both a homology theory and a homotopy theory in the context of metric subanalytic germs (see Definition 2.1). The former is called MD homology and is covered in Chapter 2, which contains a paper that is ...
    • Gaussian processes in complex media: new vistas on anomalous diffusion 

      Di Tullio F.; Paradisi P.; Spigler R.; Pagnini G. (Front. Phys., 2019-09)
      Normal or Brownian diffusion is historically identified by the linear growth in time of the variance and by a Gaussian shape of the displacement distribution. Processes departing from the at least one of the above conditions ...
    • Equilibrium and Transport Properties of Quantum Many-Body Systems 

      Ratsimanetrimanana A. (2019-10-30)
      This thesis is a study of equilibrium and dynamical properties of macroscopic quantum many-body problems. An important part of the manuscript concerns the study of heat and charge transport properties of fermions on the ...
    • Front Propagation in Random Media 

      Trucchia A. (2019)
      This PhD thesis deals with the problem of the propagation of fronts under random circumstances. A statistical model to represent the motion of fronts when are evolving in a media characterized by microscopical randomness ...
    • Stochastic processes for anomalous diffusion 

      Molina-Garcia D. (2019)
      Anomalous diffusion is a diffusion process which Mean Square Displacement (MSD) is not a linear funtion of time, what is known as normal diffusion. When the relation is faster than linear, it is called superdiffusion and ...
    • Single-trajectory spectral analysis of scaled Brownian motion 

      Sposini V.; Metzler R.; Oshanin G. (New Journal of Physics, 2019-06)
      A standard approach to study time-dependent stochastic processes is the power spectral density (PSD), an ensemble-averaged property defined as the Fourier transform of the autocorrelation function of the process in the ...
    • Reduced description method in the kinetic theory of Brownian motion with active fluctuations 

      Sliusarenko O.; Sliusarenko Y. (Journal of Physics A: Mathematical and Theoretical, 2019-09-01)
      We develop a microscopic approach to the kinetic theory of many-particle systems with dissipative and potential interactions in presence of active fluctuations. The approach is based on a generalization of Bogolyubov–Peletminskii ...
    • On the propagation of nonlinear transients of temperature and pore pressure in a thin porous boundary layer between two rocks. 

      Salusti E.; Kanivetsky R.; Droghei R.; Garra R. (Journal of Hydrology, 2019)
      The dynamics of transients of fluid-rock temperature, pore pressure, pollutants in porous rocks are of vivid interest for fundamental problems in hydrological, volcanic, hydrocarbon systems, deep oil drilling. This can ...
    • A Lê-Greuel type formula for the image Milnor number 

      Nuño-Ballesteros J.J.; Pallarés Torres I. (Hokkaido Mathematical Journal, 2019-02)
      Let $f\colon (\mathbb{C}^n,0)\to (\mathbb{C}^{n+1},0)$ be a corank 1 finitely determined map germ. For a generic linear form $p\colon (\mathbb{C}^{n+1},0)\to(\mathbb{C},0)$ we denote by $g\colon (\mathbb{C}^{n-1},0)\to ...