Results 21 to 30 of about 540,590 (160)

Qualitative Analysis of a Three-Species Reaction-Diffusion Model with Modified Leslie-Gower Scheme

open access: yesJournal of Function Spaces, 2021
The qualitative analysis of a three-species reaction-diffusion model with a modified Leslie-Gower scheme under the Neumann boundary condition is obtained.
Xiaoni Wang   +3 more
doaj   +1 more source

A generalized Poincaré inequality for Gaussian measures

open access: yes, 1989
New inequalities are obtained which interpolate in a sharp way between the Poincaré inequality and the logarithmic Sobolev inequality for both Gaussian measure and spherical surface measure.
William Beckner
core   +1 more source

Anisotropic p-Laplace Equations on long cylindrical domain [PDF]

open access: yesOpuscula Mathematica
The main aim of this article is to study the Poisson type problem for anisotropic \(p\)-Laplace type equation on long cylindrical domains. The rate of convergence is shown to be exponential, thereby improving earlier known results for similar type of ...
Purbita Jana
doaj   +1 more source

Isoperimetric and Poincaré Inequalities on Non-Self-Similar Sierpiński Sponges: the Borderline Case

open access: yesAnalysis and Geometry in Metric Spaces, 2022
In this paper we construct a large family of examples of subsets of Euclidean space that support a 1-Poincaré inequality yet have empty interior. These examples are formed from an iterative process that involves removing well-behaved domains, or more ...
Eriksson-Bique Sylvester, Gong Jasun
doaj   +1 more source

Extrait d'Au service de la France de Raymond Poincaré, 1930

open access: yes, 1995
Poincaré Raymond. Extrait d'Au service de la France de Raymond Poincaré, 1930. In: Bulletin d'histoire de l'électricité, n°25, juin 1995.
Poincaré, Raymond
core   +1 more source

Periodic solutions of a class of integrodifferential impulsive periodic systems with time-varying generating operators on Banach space

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2009
This paper deals with a class of integrodifferential impulsive periodic systems with time-varying generating operators on Banach space. Using impulsive periodic evolution operator given by us, the suitable $T_{0}$-periodic $PC$-mild solution is ...
JinRong Wang, X. Xiang, W. Wei
doaj   +1 more source

Adaptive Sliding‐Mode Control of a Perturbed Diffusion Process With Pointwise In‐Domain Actuation

open access: yesInternational Journal of Robust and Nonlinear Control, EarlyView.
ABSTRACT A sliding mode–based adaptive control law is proposed for a class of diffusion processes featuring a spatially‐varying uncertain diffusivity and equipped with several point‐wise actuators located at the two boundaries of the spatial domain as well as in its interior.
Paul Mayr   +3 more
wiley   +1 more source

Observer Design for Vector Nonlinear Systems With Applications to Autonomous Vehicles and Robots

open access: yesInternational Journal of Robust and Nonlinear Control, EarlyView.
ABSTRACT This paper focuses on observer design for nonlinear systems involving functions of vector arguments. The output equations and the process dynamics are both composed of nonlinear functions of nonseparable multivariable states. The partial derivatives of the nonlinear functions are assumed to be bounded.
Gaurav Sharma   +2 more
wiley   +1 more source

Uniform Poincaré inequalities for the Discrete de Rham complex on general domains

open access: yesResults in Applied Mathematics
In this paper we prove Poincaré inequalities for the Discrete de Rham (DDR) sequence on a general connected polyhedral domain Ω of R3. We unify the ideas behind the inequalities for all three operators in the sequence, deriving new proofs for the ...
Daniele A. Di Pietro   +1 more
doaj   +1 more source

Medial Axis Aware Learning of Signed Distance Functions

open access: yesComputer Graphics Forum, EarlyView.
Abstract We propose a novel variational method to compute a highly accurate global signed distance function (SDF) to a given point cloud. To this end, the jump set of the gradient of the SDF, which coincides with the medial axis of the surface, is explicitly taken into account through a higher‐order variational formulation that enforces linear growth ...
Samuel Weidemaier   +2 more
wiley   +1 more source

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