Concept
Riemann sphere
Related publications (73)
Well-posedness Issues For the Half-Wave Maps Equation With Hyperbolic And Spherical Targets
This thesis is a study of the global well-posedness of the Cauchy problems for half-wave maps from the Minkowski space of dimension n+1 to the 2-dimensional sphere and the hyperbolic plane. The work is mainly based on the results from Krieger-Sire 17' in ...
EPFL2023Geometric Percolation of Spherically Symmetric Fractal Aggregates
The connectedness percolation threshold (phi(c)) for spherically symmetric, randomly distributed fractal aggregates is investigated as a function of the fractal dimension (d(F)) of the aggregates through a mean-field approach. A pair of aggregates (each of ...
SPRINGER2022Spectral Hypergraph Sparsifiers of Nearly Linear Size
Mikhail Kapralov, Jakab Tardos
Graph sparsification has been studied extensively over the past two decades, culminating in spectral sparsifiers of optimal size (up to constant factors). Spectral hypergraph sparsification is a natural analogue of this problem, for which optimal bounds on ...
IEEE COMPUTER SOC2022Parametric Estimation For Functional Autoregressive Processes On The Sphere
The aim of this paper is to define a nonlinear least squares estimator for the spectral parameters of a spherical autoregressive process of order 1 in a parametric setting. Furthermore, we investigate on its asymptotic properties, such as weak consistency ...
2022Experimental investigation of surface roughness effect on a free-flight sphere in a Ludwieg tube
Understanding the aerodynamic coefficients of meteoroid fragments, deorbiting space debris, or launch vehicle stages through atmospheric reentry is essential for ground risk assessments. In high enthalpy flow, surface roughness is a crucial factor affectin ...
KOREAN SOC MECHANICAL ENGINEERS2022Voss surfaces: A design space for geodesic gridshells
Corentin Jean Dominique Fivet, Nicolas Robin Montagne, Olivier Baverel
The design of envelopes with complex geometries often leads to construction challenges. To overcome these difficulties, resorting to discrete differential geometry proved successful by establishing close links between mesh properties and the existence of g ...
2021Cryogenic CMOS Circuits and Systems: Challenges and Opportunities in Designing the Electronic Interface for Quantum Processors
Edoardo Charbon, Fabio Sebastiano
Quantum computing could potentially offer faster solutions for some of today's classically intractable problems using quantum processors as computational support for quantum algorithms [1]. Quantum processors, in the most frequent embodiment, comprise an a ...
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC2021SPHARMA approximations for stationary functional time series on the sphere
In this paper, we focus on isotropic and stationary sphere-cross-time random fields. We first introduce the class of spherical functional autoregressive-moving average processes (SPHARMA), which extend in a natural way the spherical functional autoregressi ...
2021Data Management Plans: the Importance of Data Management in the BIG-MAP Project[**]
Nicola Marzari, Giovanni Pizzi, Martin Uhrin, Ivano Eligio Castelli
Open access to research data is increasingly important for accelerating research. Grant authorities therefore request detailed plans for how data is managed in the projects they finance. We have recently developed such a plan for the EU H2020 BIG-MAP proje ...
WILEY-V C H VERLAG GMBH2021Energy distribution of harmonic 1-forms and Jacobians of Riemann surfaces with a short closed geodesic
Jürgpeter Buser, Robert Silhol
We study the energy distribution of harmonic 1-forms on a compact hyperbolic Riemann surface S where a short closed geodesic is pinched. If the geodesic separates the surface into two parts, then the Jacobian variety of S develops into a variety that split ...
2020