Results 41 to 50 of about 87,905,159 (205)

An Introduction to Classical Inverse Eigenvalue Problems

, 2011
Aim of these notes is to present an elementary introduction to classical inverse eigenvalue problems in one dimension. Attention is mainly focused on Sturm-Liouville differential operators given in canonical form on a finite interval.
MORASSI, Antonino
core   +2 more sources

Institutional Diversity in Banking and Economic Complexity

International Journal of Finance &Economics, EarlyView.
ABSTRACT In this paper, we test whether institutional diversity in banking systems is beneficial to economic complexity, using data for Italian provinces in the period 1998–2017. We compute different indexes that consider diversity from an ownership, institutional, business model and competition point of view and find that higher diversity has a ...
Beniamino Pisicoli
wiley   +1 more source

An Inexact Cayley Transform Method For Inverse Eigenvalue Problems [PDF]

, 2004
The Cayley transform method is a Newton-like method for solving inverse eigenvalue problems. If the problem is large, one can solve the Jacobian equation by iterative methods.
Raymond H. Chan, 白正简, Zheng-Jian Bai, Benedetta Morini   +3 more
core  

Application of machine learning regression models to inverse eigenvalue problems

, 2022
In this work, we study the numerical solution of inverse eigenvalue problems from a machine learning perspective. Two different problems are considered: the inverse Strum-Liouville eigenvalue problem for symmetric potentials and the inverse transmission ...
Ntargaras, Andreas, Pallikarakis, Nikolaos   +1 more
core   +1 more source

The Effects of Monetary Policy in the United Kingdom: New Evidence From SONIA Market Responses

International Journal of Finance &Economics, EarlyView.
ABSTRACT This paper constructs a new measure of the UK monetary policy instrument (MPI) using daily changes in the sterling overnight index average (SONIA) around Bank of England policy events from June 1997 to August 2025. The instrument explicitly accounts for pre‐event information and unconventional monetary policy (UMP) using lagged macro‐financial
Ayobami E. Ilori, Lucia M. Murgia
wiley   +1 more source

Catalan Bounds for Symmetric Strength‐Two Orthogonal Arrays

Journal of Combinatorial Designs, EarlyView.
ABSTRACT A Hamming shell construction is a two‐level array obtained by taking every binary vector of a given Hamming weight a prescribed number of times, for each weight in turn. Such arrays are invariant under all permutations of the factors, and they are strength‐two orthogonal arrays exactly when the multiplicities satisfy three linear constraints ...
Ruwan C. Karunanayaka
wiley   +1 more source

On large-scale diagonalization techniques for the Anderson model of localization [PDF]

, 2006
We propose efficient preconditioning algorithms for an eigenvalue problem arising in quantum physics, namely the computation of a few interior eigenvalues and their associated eigenvectors for large-scale sparse real and symmetric indefinite matrices of ...
Bollhofer, Matthias, Römer, Rudolf A., Matthias Bollhofer, Schenk, Olaf, Römer, Rudolf, Olaf Schenk, Rudolf A. Römer, Bollhoefer, Matthias, Roemer, Rudolf A.   +8 more
core   +1 more source

Resonant States Reveal Strong Light–Matter Coupling in Nanophotonic Cavities

Laser &Photonics Reviews, EarlyView.
Photonic resonant states reveal characteristics of coupled light–matter systems that would otherwise be hidden by damping. Their trajectories (when tuning the optical resonance) undergo a qualitative change at the onset of strong coupling: They start swapping positions.
Jan David Fischbach, Sergei Gladyshev, Adrià Canós Valero, Markus Nyman, Thomas Weiss, Carsten Rockstuhl   +5 more
wiley   +1 more source

Inverse problems with nonnegative and sparse solutions : algorithms and application to the phase retrieval problem

, 2018
In this paper, we study a gradient-type method and a semismooth Newton method for minimization problems in regularizing inverse problems with nonnegative and sparse solutions.
Tang, Dongliang, Dongliang Tang, Hào, Dinh Nho, Dinh Nho Hào, Dang, Cuong, Cuong Dang, Cong, Nguyen Huu, Sujit Kumar Sahoo, Sahoo, Sujit Kumar, Nguyen Huu Cong, Muoi, Pham Quy, Pham Quy Muoi   +11 more
core   +1 more source

Revealing the Resonant Physics of Open Photonic Time Crystals

Laser &Photonics Reviews, EarlyView.
ABSTRACT Photonic time crystals (PTCs) are media whose permittivity is modulated periodically in time, enabling momentum bandgaps and parametric amplification of light. Their realization at the nanoscale can revolutionize the study of light‐matter interactions.
Adrià Canós Valero, Sergei Gladyshev, David Globosits, Stefan Rotter, Egor A. Muljarov, Thomas Weiss   +5 more
wiley   +1 more source