Results 51 to 60 of about 8,080 (219)

An extension of the estimation for solutions of certain Laplace equations

open access: yesJournal of Inequalities and Applications, 2016
In this paper, by using a new type of Carleman formula with respect to a certain Laplace operator, we estimate the growth property for solutions of certain Laplace equations defined in a smooth cone.
Bin Huang   +2 more
doaj   +1 more source

Laplace operator based multi-channel image filters learning

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing, 2016
Learning an image filter from a pair of images composed of an original image and its filtered version has attracted increasing attention in the image processing region.
Yantao LIU   +4 more
doaj   +1 more source

A computing method for bending problem of thin plate on Pasternak foundation

open access: yesAdvances in Mechanical Engineering, 2020
The governing equation of the bending problem of simply supported thin plate on Pasternak foundation is degraded into two coupled lower order differential equations using the intermediate variable, which are a Helmholtz equation and a Laplace equation. A
Jiarong Gan   +4 more
doaj   +1 more source

Numerical Solution of Fractional Order Anomalous Subdiffusion Problems Using Radial Kernels and Transform

open access: yesJournal of Mathematics, 2021
By coupling of radial kernels and localized Laplace transform, a numerical scheme for the approximation of time fractional anomalous subdiffusion problems is presented.
Muhammad Taufiq, Marjan Uddin
doaj   +1 more source

A graph discretization of the Laplace–Beltrami operator [PDF]

open access: yesJournal of Spectral Theory, 2015
We show that eigenvalues and eigenfunctions of the Laplace–Beltrami operator on a Riemannian manifold are approximated by eigenvalues and eigenvectors of a (suitably weighted) graph Laplace operator of a proximity graph on an epsilon-net.
Burago, D, Ivanov, S, Kurylev, Y
openaire   +4 more sources

On localisation of eigenfunctions of the Laplace operator

open access: yesEMS Surveys in Mathematical Sciences
We prove (i) a simple sufficient geometric condition for localisation of a sequence of first Dirichlet eigenfunctions provided the corresponding Dirichlet Laplacians satisfy a uniform Hardy inequality and (ii) localisation of a sequence of first Dirichlet eigenfunctions for a wide class of elongating horn-shaped domains.
Michiel van den Berg, Dorin Bucur
openaire   +5 more sources

COMPARATIVE STUDY FOR EDGE DETECTION OF NOISY IMAGE USING SOBEL AND LAPLACE OPERATORS

open access: yesمجلة كلية التربية للبنات, 2019
Many approaches of different complexity already exist to edge detection in color images. Nevertheless, the question remains of how different are the results when employing computational costly techniques instead of simple ones.
Instructor Sameera A. Abdul-Kader Asst. lecturer Aadel I. Khalil
doaj  

Some relations between fractional Laplace operators and Hessian operators

open access: yesBruno Pini Mathematical Analysis Seminar, 2011
After recalling the many representations of the fractional Laplace operator and some of its important properties, some recent results (proved in a joint work with Bruno Franchi and Igor Verbitsky) about the relations between the k-Hessian energy of the k-
Fausto Ferrari
doaj  

Laplace operators on the cone of Radon measures

open access: yesJournal of Functional Analysis, 2015
We consider the infinite-dimensional Lie group $\mathfrak G$ which is the semidirect product of the group of compactly supported diffeomorphisms of a Riemannian manifold $X$ and the commutative multiplicative group of functions on $X$. The group $\mathfrak G$ naturally acts on the space $\mathbb M(X)$ of Radon measures on $X$. We would like to define a
Anatoly Vershik   +3 more
openaire   +5 more sources

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