Results 61 to 70 of about 711,979 (178)

Bregman Wave Distribution Function Method

Radio Science, Volume 61, Issue 7, July 2026.
Abstract This study proposes a wave distribution function (WDF) estimation method based on minimizing the Bregman divergence in the function space. The proposed method is entirely data‐driven and requires no hyperparameter tuning during the estimation process. It can be regarded as an extension of the maximum entropy method.
Ryosei Nakazawa, Mamoru Ota, Yoshiya Kasahara   +2 more
wiley   +1 more source

On the Fredholm determinant of a piecewise linear transformation

Theoretical Computer Science, 1989
The author considers a piecewise linear map F of a bounded interval into itself and studies the Perron-Frobenius operator P of F restricted on the space of functions with bounded variation. He introduces a matrix \(\Phi\) (z) describing the spectrum of P and computes the zeta-function for F in terms of \(\Phi\) (z).
openaire   +3 more sources

Social support as a buffer against mental health problems among persistent truants: Evidence from a large‐scale population survey

International Journal of Social Welfare, Volume 35, Issue 3, July 2026.
Abstract Previous research has reported mental health disparities between truant and non‐truant adolescents. However, it remains unclear how social support is associated with mental health outcomes across different levels of truancy. We investigate whether social support has similar mental health benefits for all truant adolescents or whether it plays ...
Gökhan Kaya, Miia Bask
wiley   +1 more source

A general theory of inverse welfare functions

Theoretical Economics, Volume 21, Issue 3, Page 973-1018, July 2026.
This paper develops a general theory to recover the inverse welfare function that rationalizes a given tax schedule as optimal. Our theory allows for complex environments including the presence of multidimensional tax schedules, bunching/jumping behavior, optimization frictions, general equilibrium effects, and externalities.
Katy Bergstrom, William Dodds
wiley   +1 more source

Derivatives of (modified) Fredholm determinants and stability of standing and traveling waves [PDF]

, 2008
Continuing a line of investigation initiated in [F. Gesztesy, Y. Latushkin, K.A. Makarov, Evans functions, Jost functions, and Fredholm determinants, Arch. Rat. Mech. Anal.
Gesztesy, Fritz, Zumbrun, Kevin, Latushkin, Yuri   +2 more
core   +1 more source

Building a Digital Twin for Material Testing: Model Reduction and Data Assimilation

Proceedings in Applied Mathematics and Mechanics, Volume 26, Issue 2, June 2026.
ABSTRACT The rapid advancement of industrial technologies, data collection, and handling methods has paved the way for the widespread adoption of digital twins (DTs) in engineering, enabling seamless integration between physical systems and their virtual counterparts.
Rubén Aylwin, Nina Beranek, Gajendra Babu Budihala, Matthias Mettenleiter, Goksu Oruc, Karsten Urban   +5 more
wiley   +1 more source

The One Dimensional Focusing Nonlinear Schrödinger Equation and Their Regular Solutions

Mathematics
We consider the classical one-dimensional focusing nonlinear Schrödinger equation (NLS). We give a brief overview of the techniques used to solve it since its formulation. Then we present various results obtained by the author in recent years.
Pierre Gaillard
doaj   +1 more source

Coulomb branch algebras via symplectic cohomology

Journal of Topology, Volume 19, Issue 2, June 2026.
Abstract Let (M¯,ω)$(\bar{M}, \omega)$ be a compact symplectic manifold with convex boundary and c1(TM¯)=0$c_1(T\bar{M})=0$. Suppose that (M¯,ω)$(\bar{M}, \omega)$ is equipped with a convex Hamiltonian G$G$‐action for some connected, compact Lie group G$G$.
Eduardo González, Cheuk Yu Mak, Dan Pomerleano   +2 more
wiley   +1 more source

Degree theory for 4‐dimensional asymptotically conical gradient expanding solitons

Communications on Pure and Applied Mathematics, Volume 79, Issue 5, Page 1151-1298, May 2026.
Abstract We develop a new degree theory for 4‐dimensional, asymptotically conical gradient expanding solitons. Our theory implies the existence of gradient expanding solitons that are asymptotic to any given cone over S3$S^3$ with non‐negative scalar curvature. We also obtain a similar existence result for cones whose link is diffeomorphic to S3/Γ$S^3/\
Richard H. Bamler, Eric Chen
wiley   +1 more source

Analytical and numerical routes to strong coupling in N $$ \mathcal{N} $$ = 2 SCFTs

Journal of High Energy Physics
We consider the N $$ \mathcal{N} $$ = 2 quiver gauge theory arising from a ℤ M orbifold of N $$ \mathcal{N} $$ = 4 Super Yang-Mills theory. Over the years, exploiting supersymmetric localization, exact expressions for several observables have been ...
Pieter-Jan De Smet, Alessandro Pini, Paolo Vallarino   +2 more
doaj   +1 more source