Results 61 to 70 of about 6,660 (232)
Optimal dividends for a NatCat insurer in the presence of a climate tipping point
Canadian Journal of Statistics, Volume 54, Issue 1, March 2026.Abstract We study optimal dividend strategies for an insurance company facing natural catastrophe claims, anticipating the arrival of a climate tipping point after which the claim intensity and/or the claim size distribution of the underlying risks deteriorates irreversibly.
Hansjörg Albrecher +2 more
wiley +1 more source
Go Green or Go Digital? A Set‐Theoretic Perspective of Incumbents' Paths to Success
Creativity and Innovation Management, Volume 35, Issue 1, Page 125-142, March 2026.ABSTRACT In response to growing pressures for environmental sustainability and technological advancement, this study examines how firms can effectively integrate green and digital innovations within ambidextrous strategies to enhance performance. Using fuzzy‐set Qualitative Comparative Analysis (fsQCA) on a sample of 175 German manufacturing and ...
Bettina Mayr
wiley +1 more source
Convexity of level sets for solutions to nonlinear elliptic problems in convex rings
Electronic Journal of Differential Equations, 2006 We find suitable assumptions for the quasi-concave envelope $u^*$ of a solution (or a subsolution) $u$ of an elliptic equation $F(x,u, abla u,D^2u)=0$ (possibly fully nonlinear) to be a viscosity subsolution of the same equation.
Paola Cuoghi, Paolo Salani
doaj
Pyramidal traveling fronts in the Belousov-Zhabotinskii reaction-diffusion systems in R^3
Electronic Journal of Differential Equations, 2020 In this article, we consider a diffusion system with the Belousov-Zhabotinskii (BZ for short) chemical reaction. The existence and stability of V-shaped traveling fronts for the BZ system in $\mathbb{R}^2$ had been proved in our previous papers [30,
Luyi Ma, Hong-Tao Niu, Zhi-Cheng Wang
doaj
Nonlinear elliptic-parabolic problems
, 2012 We introduce a notion of viscosity solutions for a general class of elliptic-parabolic phase transition problems. These include the Richards equation, which is a classical model in filtration theory.
Kim, Inwon C., Pozar, Norbert
core +1 more source
Entire subsolutions of Monge-Ampère type equations
Communications on Pure and Applied Analysis, 2020 In this paper, we consider the subsolutions of the Monge-Ampere type equations \begin{document}$ {\det}^{\frac{1}{n}}(D^2u+\alpha I) = f(u) $\end{document} in \begin{document}$ \mathbb{R}^{n} $\end{document} . We obtain the necessary and sufficient condition of the existence of subsolutions.
Limei Dai, Hongyu Li
openaire +2 more sources
Schauder estimates for parabolic p$p$‐Laplace systems
Journal of the London Mathematical Society, Volume 113, Issue 3, March 2026.Abstract We establish the local Hölder regularity of the spatial gradient of bounded weak solutions u:ET→Rk$u\colon E_T\rightarrow \mathbb {R}^k$ to the nonlinear system of parabolic type ∂tu−div(a(x,t)μ2+|Du|2p−22Du)=0inET,$$\begin{equation*} \partial _tu-\operatorname{div}{\Big(a(x,t){\left(\mu ^2+|Du|^2\right)}^\frac{p-2}{2}Du\Big)}=0 \qquad \mbox ...
Verena Bögelein +4 more
wiley +1 more source
A Bellman approach for two-domains optimal control problems in $\R^N$ [PDF]
, 2012 This article is the starting point of a series of works whose aim is the study of deterministic control problems where the dynamic and the running cost can be completely different in two (or more) complementary domains of the space $\R^N$.
Barles, Guy +2 more
core +2 more sources
On the Fatou theorem for d_J-bar subsolutions in wedges
, 2022 arXiv admin note: text overlap with arXiv:1808.04266, arXiv:1807 ...
openaire +3 more sources
Liouville properties for differential inequalities with (p,q)$(p,q)$ Laplacian operator
Journal of the London Mathematical Society, Volume 113, Issue 3, March 2026.Abstract In this paper, we establish several Liouville‐type theorems for a class of nonhomogenenous quasilinear inequalities. In the first part, we prove various Liouville results associated with nonnegative solutions to Ps$P_s$ −Δpu−Δqu⩾us−1inΩ,$$\begin{equation} -\Delta _p u-\Delta _q u\geqslant u^{s-1} \, \text{ in }\, \Omega, \end{equation}$$where ...
Mousomi Bhakta +2 more
wiley +1 more source