Results 31 to 40 of about 149,000 (282)

Pointwise observation of the state given by complex time lag parabolic system

open access: yesArchives of Control Sciences, 2017
Various optimization problems for linear parabolic systems with multiple constant time lags are considered. In this paper, we consider an optimal distributed control problem for a linear complex parabolic system in which different multiple constant time ...
Kowalewski Adam
doaj   +1 more source

TWO-DIMENSIONAL HYBRIDS WITH MIXED BOUNDARY VALUE PROBLEMS

open access: yesActa Polytechnica, 2016
Boundary value problems are considered on a simplex F in the real Euclidean space R2. The recent discovery of new families of special functions, orthogonal on F, makes it possible to consider not only the Dirichlet or Neumann boundary value problems on F,
Marzena Szajewska   +1 more
doaj   +1 more source

Correlation functions of boundary field theory from bulk Green's functions and phases in the boundary theory [PDF]

open access: yes, 1998
In the context of the bulk-boundary correspondence we study the correlation functions arising on a boundary for different types of boundary conditions. The most general condition is the mixed one interpolating between the Neumann and Dirichlet conditions.
Avis   +12 more
core   +2 more sources

Homogenization of elliptic systems with Neumann boundary conditions [PDF]

open access: yesJournal of the American Mathematical Society, 2013
39 ...
Kenig, Carlos E.   +2 more
openaire   +3 more sources

Isospectral shapes with Neumann and alternating boundary conditions [PDF]

open access: yesPhysical Review E, 2003
The isospectrality of a well-known pair of shapes constructed from two arrangements of seven congruent right isosceles triangles with the Neumann boundary condition is verified numerically to high precision. Equally strong numerical evidence for isospectrality is presented for the eigenvalues of this standard pair in new boundary configurations with ...
Driscoll, T., Gottlieb, Hans
openaire   +2 more sources

Boundary unique continuation theorems under zero Neumann boundary conditions [PDF]

open access: yesBulletin of the Australian Mathematical Society, 2005
Let u be a solution to a second order elliptic equation with singular potentials belonging to the Kato-Fefferman-Phong's class in Lipschitz domains. We prove the boundary unique continuation theorems and the doubling properties for u2 near the boundary under the zero Neumann boundary condition.
Tao, Xiangxing, Zhang, Songyan
openaire   +2 more sources

A PDE approach to large-time asymptotics for boundary-value problems for nonconvex Hamilton-Jacobi Equations [PDF]

open access: yes, 2010
We investigate the large-time behavior of three types of initial-boundary value problems for Hamilton-Jacobi Equations with nonconvex Hamiltonians.
Barles, Guy, Mitake, Hiroyoshi
core  

A Neumann Boundary Term for Gravity

open access: yes, 2017
The Gibbons-Hawking-York (GHY) boundary term makes the Dirichlet problem for gravity well defined, but no such general term seems to be known for Neumann boundary conditions. In this paper, we view Neumann {\em not} as fixing the normal derivative of the
Krishnan, Chethan, Raju, Avinash
core   +1 more source

Meningovascular Inflammation in Cerebral Amyloid Angiopathy‐Related Cortical Superficial Siderosis

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT The role of inflammation in cortical superficial siderosis (cSS), a marker of cerebral amyloid angiopathy (CAA) linked to high hemorrhage risk, is unclear. We examined 15 patients with cSS using 3 T post‐contrast vessel wall MRI (VWI) and CSF analysis.
Philipp Arndt   +8 more
wiley   +1 more source

On the Solvability of Discrete Nonlinear Two-Point Boundary Value Problems

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2012
We prove the existence and uniqueness of solutions for a family of discrete boundary value problems by using discrete's Wirtinger inequality. The boundary condition is a combination of Dirichlet and Neumann boundary conditions.
Blaise Kone, Stanislas Ouaro
doaj   +1 more source

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