• Classification of smooth factorial affine surfaces of Kodaira dimension zero with trivial units 

  Pełka, T.; Raźny, P. (2021-07-31)

  We give a corrected statement of (Gurjar and Miyanishi 1988, Theorem 2), which classifies smooth affine surfaces of Kodaira dimension zero, whose coordinate ring is factorial and has trivial units. Denote the class of such ...

• Some contributions to the theory of singularities and their characteristic classes 

  Pallarés Torres, I. (2021-06-02)

  In this Ph.D. thesis, we give some contributions to the theory of singularities, as well as to the theory of characteristic classes of singular spaces. The first part of this thesis is devoted to the theory of singularities ...

• Stochastic resetting by a random amplitude 

  Dahlenburg, M.; Chechkin, A. V.; Schumer, R.; Metzler, R. (2021-05-18)

  Stochastic resetting, a diffusive process whose amplitude is reset to the origin at random times, is a vividly studied strategy to optimize encounter dynamics, e.g., in chemical reactions. Here we generalize the resetting ...

• Macroscopic Dynamics of the Strong-Coupling BCS-Hubbard Model 

  Bru, J.-B.; de Siqueira Pedra, W. (2020)

  The aim of the current paper is to illustrate, in a simple example, our recent, very general, rigorous results on the dynamical properties of fermions and quantum-spin systems with long-range, or mean-field, interactions, ...

• Quantum Fluctuations and Large Deviation Principle for Microscopic Currents of Free Fermions in Disordered Media 

  Bru, J.-B.; de Siqueira Pedra, W.; Ratsimanetrimanana, A. (2020)

  We contribute an extension of large-deviation results obtained in [N.J.B. Aza, J.-B. Bru, W. de Siqueira Pedra, A. Ratsimanetrimanana, J. Math. Pures Appl. 125 (2019) 209] on conductivity theory at atomic scale of free ...

• Weak* Hypertopologies with Application to Genericity of Convex Sets 

  Bru, J.-B.; de Siqueira Pedra, W. (2022)

  We propose a new class of hypertopologies, called here weak$^{\ast }$ hypertopologies, on the dual space $\mathcal{X}^{\ast }$ of a real or complex topological vector space $\mathcal{X}$. The most well-studied and well-known ...

• Large Deviations in Weakly Interacting Fermions - Generating Functions as Gaussian Berezin Integrals and Bounds on Large Pfaffians 

  Aza, N. J. B.; Bru, J.-B.; de Siqueira Pedra, W.; Müssnich, L. C. P. A. M. (2021)

  We prove that the G\"{a}rtner--Ellis generating function of probability distributions associated with KMS states of weakly interacting fermions on the lattice can be written as the limit of logarithms of Gaussian Berezin ...

• Exact distributions of the maximum and range of random diffusivity processes 

  Grebenkov, D. S.; Sposini, V.; Metzler, R.; Oshanin, G.; Seno, F. (2021-02-09)

  We study the extremal properties of a stochastic process $x_t$ defined by the Langevin equation ${\dot {x}}_{t}=\sqrt{2{D}_{t}}\enspace {\xi }_{t}$, in which $\xi_t$ is a Gaussian white noise with zero mean and $D_t$ is a ...

• Surrogate based Global Sensitivity Analysis of ADM1-based Anaerobic Digestion Model 

  Trucchia, A.; Frunzo, L. (2021)

  In order to calibrate the model parameters, Sensitivity Analysis routines are mandatory to rank the parameters by their relevance and fix to nominal values the least influential factors. Despite the high number of works ...

• Study of Wound Healing Dynamics by Single Pseudo-Particle Tracking in Phase Contrast Images Acquired in Time-Lapse 

  Scheda, R.; Vitali, S.; Giampieri, E.; Pagnini, G.; Zironi, I. (2021-03)

  Cellular contacts modify the way cells migrate in a cohesive group with respect to a free single cell. The resulting motion is persistent and correlated, with cells’ velocities self-aligning in time. The presence of a dense ...

• SHOULD I STAY OR SHOULD I GO? ZERO-SIZE JUMPS IN RANDOM WALKS FOR LÉVY FLIGHTS 

  Pagnini, G.; Vitali, S. (2021-02)

  We study Markovian continuous-time random walk models for Lévy flights and we show an example in which the convergence to stable densities is not guaranteed when jumps follow a bi-modal power-law distribution that is equal ...

• Exact first-passage time distributions for three random diffusivity models 

  Grebenkov, D. S.; Sposini, V.; Metzler, R.; Oshanin, G.; Seno, F. (2021-01-04)

  We study the extremal properties of a stochastic process $x_t$ defined by a Langevin equation $\dot{x}= \sqrt{2D_o V (B_t )} \xi_t$, where $\xi$ is a Gaussian white noise with zero mean, $D_0$ is a constant scale factor, ...

• Decomposition theorem and torus actions of complexity one 

  Agustin, M.; Langlois, K. (2020)

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

• The abel map for surface singularities II. Generic analytic structure 

  Nagy, J.; Nemethi, A. (2019)

  We study the analytic and topological invariants associated with complex normal surface singularities. Our goal is to provide topological formulae for several discrete analytic invariants whenever the analytic structure ...

• Reflection maps 

  Peñafort, G. (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 ...

• The random diffusivity approach for diffusion in heterogeneous systems 

  Sposini, V. (2020-12-16)

  The two hallmark features of Brownian motion are the linear growth $\langle x^2(t) \rangle = 2 D d t$ of the mean squared displacement (MSD) with diffusion coefficient $D$ in $d$ spatial dimensions, and the Gaussian ...

• Gut microbiota ecology: Biodiversity estimated from hybrid neutral-niche model increases with health status and aging 

  Sala, C.; Giampieri, E.; Vitali, S.; Garagnani, P.; Remondini, D.; Bazzani, A.; Franceschi, C.; Castellani, G. (2020-10-30)

  In this work we propose an index to estimate the gut microbiota biodiversity using a modeling approach with the aim of describing its relationship with health and aging. The gut microbiota, a complex ecosystem that links ...

• Local Topological Obstruction For Divisors 

  Biswas, I.; Dan, A. (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 ...

• Universal spectral features of different classes of random diffusivity processes 

  Sposini, V.; Grebenkov, D.S.; Metzler, R.; Oshanin, G.; Seno, F. (2020-06-26)

  Stochastic models based on random diffusivities, such as the diffusing- diffusivity approach, are popular concepts for the description of non-Gaussian diffusion in heterogeneous media. Studies of these models typically ...

• Kato-matsumoto-type results for disentanglements 

  Peñafort, G.; Zach, M. (2020)

  We consider the possible disentanglements of holomorphic map germs f : (Cn, 0) → (CN , 0), 0 < n < N, with nonisolated locus of instability Inst(f). The aim is to achieve lower bounds for their (homological) connectiv- ity ...

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