Results 101 to 110 of about 475 (219)

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  

A Model of Strategic Sustainable Investment

Mathematical Finance, EarlyView.
ABSTRACT We study a problem of optimal irreversible investment and emission reduction formulated as a nonzero‐sum dynamic game between an investor with environmental preferences and a firm. The game is set in continuous‐time on an infinite‐time horizon.
Tiziano De Angelis, Caio César Graciani Rodrigues, Peter Tankov   +2 more
wiley   +1 more source

The Optimal Mean–Variance Selling Problem With Finite Horizon

Mathematical Finance, EarlyView.
ABSTRACT The optimal mean–variance selling problem seeks to determine a dynamically optimal stopping time in the nonlinear problem sup0≤τ≤TE(Xτ)−cVar(Xτ)$\sup _{0 \le \tau \le T} \left[ \mathsf {E}\,\!(X_\tau) - c\, \mathsf {V}ar\,\!(X_\tau) \right]$, where X$X$ is a geometric Brownian motion with strictly positive drift, the supremum is taken over ...
Peter Johnson, Jesper Lund Pedersen, Goran Peskir   +2 more
wiley   +1 more source

Multiple positive solutions for elliptic problem with concave and convex nonlinearities

Electronic Journal of Differential Equations, 2015
In this article, we consider the existence of multiple solutions to the elliptic problem $$\displaylines{ -\Delta u=\lambda u^q+u^s+\mu u^p\quad \text{in } \Omega,\cr u>0\quad \text{in } \Omega,\cr u=0\quad \text{on } \partial\Omega, }$$ where ...
Jiayin Liu, Lin Zhao, Peihao Zhao
doaj  

Robust Mean–Variance Portfolio Optimization: Mean–Variance–Variance Criterion Versus Mean–Variance–Standard Deviation Criterion

Mathematical Finance, EarlyView.
ABSTRACT We study a dynamic portfolio optimization problem under the mean–variance–variance (M‐V‐V) criterion proposed by Maccheroni et al. It is an analogue of the Arrow–Pratt approximation to the well‐known smooth ambiguity model. Under the standard Black–Scholes framework, we derive fully explicit equilibrium investment strategies in which a DM's ...
David Landriault, Bin Li, Yuanyuan Zhang
wiley   +1 more source

Do State Lotteries Exploit their Lottery Power? Optimal Lotto Pricing With Heterogeneous Players: Evidence from the United Kingdom

Oxford Bulletin of Economics and Statistics, EarlyView.
ABSTRACT We propose a new model of revenue‐maximising lottery pricing under income‐related heterogeneity and apply it to 13 years of UK National Lottery data. Our pricing rule shows how a state's lottery power is shaped by heterogeneities in lotto demand and the income distribution, and we study its efficiency and distributional implications.
Martin Forster, Emanuela Randon, Robert Pryce   +2 more
wiley   +1 more source

Multiple positive solutions for Schrodinger-Poisson systems involving concave-convex nonlinearities

Electronic Journal of Differential Equations, 2019
In this article, we study the existence of multiple positive solutions for Schrodinger-Poisson systems involving concave-convex nonlinearities and sign-changing weight potentials.
Haining Fan
doaj  

Nehari manifold approach for fractional $p(\cdot)$-Laplacian system involving concave-convex nonlinearities

Electronic Journal of Differential Equations, 2020
In this article, using Nehari manifold method we study the multiplicity of solutions of the nonlocal elliptic system involving variable exponents and concave-convex nonlinearities, $$\displaylines{ (-\Delta)_{p(\cdot)}^{s} u=\lambda a(x)| u|^{q(x ...
Reshmi Biswas, Sweta Tiwari
doaj  

Exact multiplicity of positive solutions of a semipositone problem with concave–convex nonlinearity

Journal of Differential Equations, 2013
The Dirichlet boundary value problem with semipositone and concave-convex nonlinearity is investigated. Three qualitatively different bifurcation diagrams of this problem are given, and exactly three positive solutions, two positive solutions and one positive solution of this problem are obtained.
openaire   +1 more source