## Bilatu

77-tik 1-10 emaitza erakusten

#### Pseudospectral Methods for the Fractional Laplacian on R

(2020-07-02)

In this thesis, first, we propose a novel pseudospectral method to approximate accu- rately and efficiently the fractional Laplacian without using truncation. More pre- cisely, given a bounded regular function defined over ...

#### Exact Constructions in the (Non-linear) Planar Theory of Elasticity: From Elastic Crystals to Nematic Elastomers

(Archive for Rational Mechanics and Analysis, 2020-07)

In this article we deduce necessary and sufficient conditions for the presence of “Conti-type”, highly symmetric, exactly stress-free constructions in the geometrically non-linear, planar n-well problem, generalising results ...

#### Vortex Filament Equation for some Regular Polygonal Curves

(2020-06-15)

One of the most interesting phenomena in fluid literature is the occurrence and evolution of vortex filaments. Some of their examples in the real world are smoke rings, whirlpools, and tornadoes. For an ideal fluid, there ...

#### Geometric differentiability of Riemann's non-differentiable function

(Advances in Mathematics, 2020-06)

Riemann’s non-differentiable function is a classic example of a continuous function which is almost nowhere differentiable, and many results concerning its analytic regularity have been shown so far. However, it can also ...

#### Evolution of Polygonal Lines by the Binormal Flow

(Springer Nature Switzerland AG 2020, 2020-02-05)

The aim of this paper is threefold. First we display solutions of the cubic nonlinear Schr ̈odinger equation on R in link with initial data a sum of Dirac masses. Secondly we show a Talbot effect for the same equation. ...

#### Bilinear identities involving the k-plane transform and Fourier extension operators

(2019-11-30)

We prove certain L2pRnq bilinear estimates for Fourier extension operators associ- ated to spheres and hyperboloids under the action of the k-plane transform. As the estimates are L2-based, they follow from bilinear ...

#### Some geometric properties of Riemann’s non-differentiable function

(Comptes Rendus Mathematique, 2019-11-06)

Riemann’s non-differentiable function is a celebrated example of a continuous but almost nowhere differentiable function. There is strong numeric evidence that one of its complex versions represents a geometric trajectory ...

#### Carleman type inequalities for fractional relativistic operators

(2019-09-22)

In this paper, we derive Carleman estimates for the fractional relativistic operator. Firstly, we consider changing-sign solutions to the heat equation for such operators. We prove monotonicity inequalities and convexity ...

#### On the Evolution of the Vortex Filament Equation for regular M-polygons with nonzero torsion

(2019-09-03)

In this paper, we consider the evolution of the Vortex Filament equa- tion (VFE):
Xt = Xs ∧ Xss,
taking M-sided regular polygons with nonzero torsion as initial data. Us- ing algebraic techniques, backed by numerical ...

#### Asymptotic behaviour of some nonlocal equations in mathematical biology and kinetic theory

(2019-09)

We study the long-time behaviour of solutions to some partial differential equations arising in modeling of several biological and physical phenomena. In this work, the type of the equations we consider is mainly nonlocal, ...