Results 31 to 40 of about 9,598,593 (294)
A Free Boundary Problem for the Predator–Prey Model with Double Free Boundaries [PDF]
Journal of Dynamics and Differential Equations, 2015 25 ...
Wang, Mingxin, Zhao, Jingfu
openaire +3 more sources
Qualitative Numerical Analysis of a Free-Boundary Diffusive Logistic Model
Mathematics, 2023 A two-dimensional free-boundary diffusive logistic model with radial symmetry is considered. This model is used in various fields to describe the dynamics of spreading in different media: fire propagation, spreading of population or biological invasions.
María Consuelo Casabán +3 more
doaj +1 more source
A free boundary problem for the -Laplacian [PDF]
Nonlinear Analysis: Theory, Methods & Applications, 2010 We consider the optimization problem of minimizing $\int_Ω|\nabla u|^{p(x)}+ λχ_{\{u>0\}} dx$ in the class of functions $W^{1,p(\cdot)}(Ω)$ with $u-ϕ_0\in W_0^{1,p(\cdot)}(Ω)$, for a given $ϕ_0\geq 0$ and bounded. $W^{1,p(\cdot)}(Ω)$ is the class of weakly differentiable functions with $\int_Ω|\nabla u|^{p(x)} dx0\}$, is a regular surface.
Fernandez Bonder, Julian +2 more
openaire +4 more sources
Free boundary value problem for compressible magnetohydrodynamic equations
Electronic Journal of Differential Equations, 2020 In this article we consider a free boundary value problem for barotropic compressible magnetohydrodynamic equations with density-dependent viscosity coefficients.
Huihui Kong, Ruxu Lian
doaj
Small Motions of an Ideal Stratified Fluid in a Basin Covered with Ice
Современная математика: Фундаментальные направления, 2018 We study the problem on small motions of an ideal stratified fluid with a free surface partially covered with crushed ice. The crushed ice is supposed to be ponderable particles of some matter floating on the free surface.
N D Kopachevsky, D O Tsvetkov
doaj +1 more source
FEBS Letters, EarlyView.How do genomes gain new functional parts? In eukaryotes, which tend to evolve under weak selection, much of the genome is junk. Palazzo and Qiu borrow the logic of Markov chains to show how non‐functional DNA becomes functional through the appearance of intermediate states, which arise due to epistasis, buffering, and biochemical messiness, allowing ...
Alexander F. Palazzo, Yi Qiu
wiley +1 more source
Symmetries of some free boundary problem in hydrodynamics
Дифференциальная геометрия многообразий фигурThe free boundary problem of water waves in three space dimensions without surface tension is considered. The problem consists of the Laplace equation on the velocity potential, and of the kinematic and dynamic boundary conditions. T. Brooke Benjamin
A. V. Kuleshov
doaj +1 more source
Membrane composition and thermodynamic identity as boundaries of life for synthetic cell research
FEBS Letters, EarlyView.What makes a cell a cell? The boundary of a living cell is not just a wall. Read as a Markov blanket, the membrane separates internal from external states, generating identity and non‐equilibrium order. Can this identity be rebuilt from scratch in a synthetic cell?
Caterina Presutti, Bert Poolman
wiley +1 more source
Uniqueness in a two phase free boundary problem [PDF]
, 2001 We investigate a two-phase free-boundary problem in heat propagation that in classical terms is formulated as follows: to find a continuous function u(x, t) defined in a domain D ⊂ RN × (0, T) which satisfies the equation ∆u + Σ ai uxi − ut = 0 whenever ...
Lederman, Claudia Beatriz +2 more
core +1 more source
Open Mathematics, 2015 We consider one-dimensional parabolic free boundary value problem with a nonlocal (integro-differential) condition on the free boundary. Results on Cm-smoothness of the free boundary are obtained.
Semerdjieva Rossitza
doaj +1 more source