Results 111 to 120 of about 6,600 (212)

Loop type subcontinua of positive solutions for indefinite concave-convex problems

, 2018
We establish the existence of loop type subcontinua of nonnegative solutions for a class of concave-convex type elliptic equations with indefinite weights, under Dirichlet and Neumann boundary conditions.
Kaufmann, Uriel, Quoirin, Humberto Ramos, Umezu, Kenichiro   +2 more
core  

The Economic Effects of ‘Excessive’ Financial Deepening

Oxford Bulletin of Economics and Statistics, EarlyView.
ABSTRACT We study the causal implications of high levels of financial deepening for economic development and banking crises in a panel of countries over the past seven decades. We adopt a factor‐augmented heterogeneous difference‐in‐differences estimator and find, in contrast to the existing literature, that very high levels of financial development do
Rachel Cho, Rodolphe Desbordes, Markus Eberhardt   +2 more
wiley   +1 more source

Redistribution and labor market inclusion

The Scandinavian Journal of Economics, EarlyView.
Abstract This paper incorporates labor market inactivity and long‐term unemployment into the framework of optimal redistributive taxation. We examine how a combination of education policy, public employment programs, unemployment benefits, and optimal income taxation can effectively address both redistributive goals and the persistent challenges of ...
Thomas Aronsson, Spencer Bastani, Khayyam Tayibov   +2 more
wiley   +1 more source

Data‐Based Refinement of Parametric Uncertainty Descriptions

International Journal of Robust and Nonlinear Control, Volume 36, Issue 6, Page 3210-3228, April 2026.
ABSTRACT We consider dynamical systems with a linear fractional representation involving parametric uncertainties which are either constant or varying with time. Given a finite‐horizon input‐state or input‐output trajectory of such a system, we propose a numerical scheme which iteratively improves the available knowledge about the involved constant ...
Tobias Holicki, Carsten W. Scherer
wiley   +1 more source

New perspectives on head and neck allometry and ecomorphology in tetrapods

Biological Reviews, Volume 101, Issue 2, Page 665-694, April 2026.
ABSTRACT The skull and neck are vital parts of the body, influencing feeding ecology, habitat exploitation and locomotion. Numerous studies have therefore sought to understand how the size of these segments vary with ecology and scale with overall body size.
Alice E. Maher, Philip G. Cox, Thomas W. Maddox, James D. Gardiner, Karl T. Bates   +4 more
wiley   +1 more source

Multiple positive solutions for Kirchhoff type problems involving concave and convex nonlinearities in R^3

Electronic Journal of Differential Equations, 2016
In this article, we consider the multiplicity of positive solutions for a class of Kirchhoff type problems with concave and convex nonlinearities. Under appropriate assumptions, we prove that the problem has at least two positive solutions, moreover ...
Xiaofei Cao, Junxiang Xu, Jun Wang
doaj  

Macroscopic Market Making Games

Mathematical Finance, Volume 36, Issue 2, Page 352-373, April 2026.
ABSTRACT Building on the macroscopic market making framework as a control problem, this paper investigates its extension to stochastic games. In the context of price competition, each agent is benchmarked against the best quote offered by the others. We begin with the linear case.
Ivan Guo, Shijia Jin
wiley   +1 more source

Infinitely many solutions for quasilinear Schrödinger equation with concave-convex nonlinearities

Boundary Value Problems
In this work, we study the existence of infinitely many solutions to the following quasilinear Schrödinger equations with a parameter α and a concave-convex nonlinearity: 0.1 − Δ p u + V ( x ) | u | p − 2 u − Δ p ( | u | 2 α ) | u | 2 α − 2 u = λ h 1 ( x
Lijuan Chen, Caisheng Chen, Qiang Chen, Yunfeng Wei   +3 more
doaj   +1 more source

Multiple positive solutions for biharmonic equation of Kirchhoff type involving concave-convex nonlinearities

Electronic Journal of Differential Equations, 2020
In this article, we study the multiplicity of positive solutions for the biharmonic equation of Kirchhoff type involving concave-convex nonlinearities, $$ \Delta^2u-\Big(a+b\int_{\mathbb{R}^N}|\nabla u|^2dx\Big)\Delta u+V(x)u =\lambda f_1(x)|u|^{q-2 ...
Fengjuan Meng, Fubao Zhang, Yuanyuan Zhang   +2 more
doaj  

Machine Learning Classification of AI‐Generated and Human‐Mapped Buildings in OpenStreetMap Using Morphometric Analysis

Transactions in GIS, Volume 30, Issue 2, April 2026.
ABSTRACT The proliferation of AI‐generated building footprints in OpenStreetMap (OSM) has transformed crowdsourced mapping, yet the geometric characteristics associated with different digitization methods remain poorly understood. This study presents a comprehensive morphometric analysis of more than 9 million building footprints across 15 ...
Abdulkadir Memduhoğlu
wiley   +1 more source