Mostrando ítems 161-180 de 713

    Thumbnail

    Point evaluation in Paley–Wiener spaces 

    Brevig, O. F.; Chirre, A.; Ortega-Cerdà, Joaquim; Seip, K. (Fecha de publicación: 2024-12-12)

    We study the norm of point evaluation at the origin in the Paley-Wiener space PWp for 0 < p < infinity, i.e., we search for the smallest positive constant C, called C-p, such that the inequality |f(0)|(p) <= C||f||(p)(p) ...

    Thumbnail

    On the radicality property for spaces of symbols of bounded Volterra operators 

    Cascante, C.; Fàbrega, J.; Pascuas, D.; Pelaáz, J. A. (Fecha de publicación: 2024-12-15)

    In a recent paper of the authors together with A. Aleman, it is shown that the Bloch space B in the unit disc has the following radicality property: if an analytic function g satisfies that g(n )is an element of B, then ...

    Thumbnail

    Schauder and Cordes-Nirenberg estimates for nonlocal elliptic equations with singular kernels 

    Fernández-Real, X.; Ros-Oton, X. (Fecha de publicación: 2024-09-01)

    We study integro-differential elliptic equations (of order 2s$2s$) with variable coefficients, and prove the natural and most general Schauder-type estimates that can hold in this setting, both in divergence and non-divergence ...

    Thumbnail

    Topological Moduli Space For Germs Of Holomorphic Foliations III: Complete Families 

    Marín, D.; Mattei, J. F.; Salem, E. (Fecha de publicación: 2024-08-01)

    In this work we use our previous results on the topological classification of generic singular foliation germs on (C^2 , 0) to construct complete families: after fixing the semi-local topological invariants we prove the ...

    Thumbnail

    Darboux, Moser and Weinstein theorems for prequantum systems and applications to geometric quantization 

    Miranda, E.; Weistman, J. (Fecha de publicación: 2024-12-01)

    We establish analogs of the Darboux, Moser and Weinstein theorems for prequantum systems. We show that two prequantum systems on a manifold with vanishing first cohomology, with symplectic forms defining the same cohomology ...

    Thumbnail

    On the boundedness of solutions of a forced discontinuous oscillator 

    Seara, T. M.; Silva, L. V. M. F.; Villanueva, J. (Fecha de publicación: 2024-12-15)

    We study the global boundedness of the solutions of a non-smooth forced oscillator with a periodic and real analytic forcing. We show that the impact map associated with this discontinuous equation becomes a real analytic ...

    Thumbnail

    On the chromatic number of powers of subdivisions of graphs 

    Anastos, M.; Boyadzhiyska, S.; Rathke, S.; Rué, J. (Fecha de publicación: 2025-01-15)

    For a given graph G = (V,E), we define its nth subdivision as the graph obtained from G by replacing every edge by a path of length n. We also define the mth power of G as the graph on vertex set V where we connect every ...

    Thumbnail

    Comparative analysis of the yields of dicentrics and chromosomal translocations 

    Mlynarczyk, D.; Puig, P.; Barquinero, J. F.; Armero, C.; Gómez-Rubio, V. (Fecha de publicación: 2024-08-02)

    Purpose: Chromosomal dicentrics and translocations are commonly employed as biomarkers to estimate radiation doses. The main goal of this article is to perform a comparative analysis of yields of both types of aberrations. ...

    Thumbnail

    Dynamics around the Earth-Moon triangular points in the Hill restricted 4-body problem 

    Peterson, L. T.; Brown, G.; Jorba, A.; Scheeres, D. (Fecha de publicación: 2024-08-01)

    This paper investigates the motion of a small particle moving near the triangular points of the Earth-Moon system. The dynamics are modeled in the Hill restricted 4-body problem (HR4BP), which includes the effect of the ...

    Thumbnail

    Tent Carleson measures for Hardy spaces 

    Lv, X. F.; Pau, J. (Fecha de publicación: 2024-07-15)

    We completely characterize those positive Borel measures mu on the unit ball B(n )such that the Carleson embedding from Hardy spaces H-p into the tent-type spaces T-s(q)(mu) is bounded, for all possible values of 0 < p, ...

    Thumbnail

    Numerical Simulation and Parallel Computing of Acoustic Wave Equation in Isotropic-Heterogeneous Media 

    Altybay, A.; Tokmagambetov, N. (Fecha de publicación: 2024-08-26)

    In this paper, we consider the numerical implementation of the 2D wave equation in isotropic-heterogeneous media. The stability analysis of the scheme using the von Neumann stability method has been studied. We conducted ...

    Thumbnail

    Invariant manifolds near L1 and L2 in the Sun-Jupiter elliptic restricted three-body problem I 

    Duarte, G.; Jorba, A. (Fecha de publicación: 2024-08-01)

    In this paper, we present a way of combining the computation of invariant tori and their stable and unstable manifolds with the multiple shooting technique. We start by showing some of the results of Jorba (Nonlinearity ...

    Thumbnail

    Tube formulas for valuations in complex space forms 

    Solanes, G.; Trillo, J. A. (Fecha de publicación: 2024-07-16)

    Given an isometry invariant valuation on a complex space form we compute its value on the tubes of sufficiently small radii around a set of positive reach. This generalizes classical formulas of Weyl, Gray and others about ...

    Thumbnail

    Characterizing the Spatial Distribution of Mixing and Transport in the Northern Middle Atmosphere During Winter 

    Curbelo, J.; Mechoso, C. R. (Fecha de publicación: 2024-07-16)

    A three‐dimensional winter (DJF) climatology of Lagrangian diffusivity characterizing eddy mixing and transport in the northern middle atmosphere is presented. To emphasize aspects other than zonal averages, we use the ...

    Thumbnail

    Phase Field Model for Multi-Material Shape Optimization of Inextensible Rods 

    Dondi, P.; Maione, A.; Wolff-Vorbeck, S.

    We derive a model for the optimization of the bending and torsional rigidities of nonhomogeneous elastic rods. This is achieved by studying a sharp interface shape optimization problem with perimeter penalization, that ...

    Thumbnail

    Myelin dystrophy impairs signal transmission and working memory in a multiscale model of the aging prefrontal cortex 

    Ibañez, S.; Sengupta, N.; Luebke, J.; Wimmer, K.; Weaver, C.M. (Fecha de publicación: 2024-7-19)

    Normal aging leads to myelin alterations in the rhesus monkey dorsolateral prefrontal cortex (dlPFC), which are positively correlated with degree of cognitive impairment. It is hypothesized that remyelination with shorter ...

    Thumbnail

    The Regularity Problem For The Laplace Equation In Rough Domains 

    Mourgoglou, M.; Tolsa, X. (Fecha de publicación: 2024-06-15)

    Let Omega subset of Rn+1, n >= 2 be a bounded open and connected set satisfying the corkscrew condition with uniformly n-rectifiable boundary. In this paper we study the connection among the solvability of (D-p '), the ...

    Thumbnail

    The A∞ Condition, ε-Approximators, and Varopoulos Extensions in Uniform Domains 

    Bortz, S.; Poggi, B.; Tapiola, O.; Tolsa, X. (Fecha de publicación: 2024-07-01)

    Suppose that Omega subset of Rn+1, n >= 1, is a uniform domain with n-Ahlfors regular boundary and L is a (not necessarily symmetric) divergence form elliptic, real, bounded operator in Omega. We show that the corresponding ...

    Thumbnail

    A Novel Algebraic Approach To Time-Reversible Evolutionary Models 

    Casanellas, M.; Homs, R.; Torres, A. (Fecha de publicación: 2024-08-01)

    In the last years, algebraic tools have been proven useful in phylogenetic reconstruction and model selection through the study of phylogenetic invariants. However, up to now, the models studied from an algebraic viewpoint ...

    Thumbnail

    Invariant Manifolds of Degenerate Tori and Double Parabolic Orbits to Infinity in the (n + 2)-Body Problem 

    Baldomá, I.; Fontich, E.; Martín, P. (Fecha de publicación: 2024-06-01)

    There are many interesting dynamical systems in which degenerate invariant tori appear. We give conditions under which these degenerate tori have stable and unstable invariant manifolds, with stable and unstable directions ...