Results 21 to 30 of about 4,516 (262)

Dirichlet boundary conditions in a noncommutative theory [PDF]

Journal of High Energy Physics, 2010
19 pages, 1 figure ...
Fosco, Cesar Daniel, Scuracchio, Pablo Martín   +1 more
openaire   +3 more sources

Exact Null Controllability of a Wave Equation with Dirichlet–Neumann Boundary in a Non-Cylindrical Domain

Mathematics, 2023
In this paper, by applying the Hilbert Uniqueness Method in a non-cylindrical domain, we prove the exact null controllability of one wave equation with a moving boundary.
Lizhi Cui, Jing Lu
doaj   +1 more source

Consistent Dirichlet boundary conditions for numerical solution of moving boundary problems [PDF]

Applied Numerical Mathematics, 2009
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Hubbard, M.E., Baines, M.J., Jimack, P.K.   +2 more
openaire   +3 more sources

Exact Null Controllability of a One-Dimensional Wave Equation with a Mixed Boundary

Mathematics, 2023
In this paper, exact null controllability of one-dimensional wave equations in non-cylindrical domains was discussed. It is different from past papers, as we consider boundary conditions for more complex cases.
Lizhi Cui, Jing Lu
doaj   +1 more source

Study of properties of solutions for quasilinear parabolic systems

MATEC Web of Conferences, 2016
In this paper, we concern with degenerate and quasilinear parabolic systems not in divergence form with null Dirichlet boundary conditions and positive initial conditions. The local existence and uniqueness of classical solution are proved.
Gao Yunzhu, Meng Qiu, Guo Yingjia
doaj   +1 more source

Willmore Obstacle Problems under Dirichlet Boundary Conditions

ANNALI SCUOLA NORMALE SUPERIORE - CLASSE DI SCIENZE, 2023
We consider obstacle problems for the Willmore functional in the class of graphs of functions and surfaces of revolution with Dirichlet boundary conditions. We prove the existence of minimisers of the obstacle problems under the assumption that the Willmore energy with the unilateral constraint is below a universal bound.
Grunau, Hans-Christoph, Okabe, Shinya
openaire   +3 more sources

Wentzell boundary conditions in the context of Dirichlet forms

Advances in Differential Equations, 2003
For the formal elliptic expression \(L=\nabla a\nabla\) on \(\Omega\subset{\mathbb R}^d\) with Wentzell boundary condition \(-\alpha Au +n\cdot a\nabla u +\gamma u=0\) on \(\Sigma\subset\Omega\) and Dirichlet boundary condition on \(\Omega\backslash\Sigma\) (\(\alpha,\gamma\) are suitable functions, \(n\) is the outward normal), the authors prove that ...
Vogt, Hendrik, Voigt, Jürgen
openaire   +3 more sources

Numerical Reconstruction of the Source in Dynamical Boundary Condition of Laplace’s Equation

Axioms
In this work, we consider Cauchy-type problems for Laplace’s equation with a dynamical boundary condition on a part of the domain boundary. We construct a discrete-in-time, meshless method for solving two inverse problems for recovering the space–time ...
Miglena N. Koleva, Lubin G. Vulkov
doaj   +1 more source

New Results on a Nonlocal Sturm–Liouville Eigenvalue Problem with Fractional Integrals and Fractional Derivatives

Fractal and Fractional
In this paper, we investigate the eigenvalue properties of a nonlocal Sturm–Liouville equation involving fractional integrals and fractional derivatives under different boundary conditions.
Yunyang Zhang, Shaojie Chen, Jing Li
doaj   +1 more source

A Computational Model for q-Bernstein Quasi-Minimal Bézier Surface

Journal of Mathematics, 2022
A computational model is presented to find the q-Bernstein quasi-minimal Bézier surfaces as the extremal of Dirichlet functional, and the Bézier surfaces are used quite frequently in the literature of computer science for computer graphics and the ...
Daud Ahmad, M. Khalid Mahmood, Qin Xin, Ferdous M. O. Tawfiq, Sadia Bashir, Arsha Khalid   +5 more
doaj   +1 more source