Results 51 to 60 of about 103,519 (218)

Resolvent for Non-Self-Adjoint Differential Operator with Block-Triangular Operator Potential

Abstract and Applied Analysis, 2016
A resolvent for a non-self-adjoint differential operator with a block-triangular operator potential, increasing at infinity, is constructed. Sufficient conditions under which the spectrum is real and discrete are obtained.
Aleksandr Mikhailovich Kholkin
doaj   +1 more source

Spectral stability of nonlinear waves in KdV-type evolution equations

, 2013
This paper concerns spectral stability of nonlinear waves in KdV-type evolution equations. The relevant eigenvalue problem is defined by the composition of an unbounded self-adjoint operator with a finite number of negative eigenvalues and an unbounded ...
ANGULO, ANGULO PAVA, ANGULO PAVA, BONA, BRIDGES, BRIDGES, BRONSKI, CHAMPNEYS, CHARDARD, CHUGUNOVA, CHUGUNOVA, CHUGUNOVA, CRAIG, CUCCAGNA, DIAS, GRILLAKIS, HAKKAEV, HARAGUS, ILLICHEV, KAPITULA, KAPITULA, KAPITULA, KICHENASSAMY, KODAMA, KOLLAR, LEVANDOVSKY, LIN, MADDOCKS, PEGO, PEGO, PELINOVSKY, PELINOVSKY, PELINOVSKY, PONTRYAGIN, SOUGANIDIS, STANISLAVOVA, WEINSTEIN   +36 more
core   +1 more source

Singular Perturbations of Self-Adjoint Operators [PDF]

Mathematical Physics, Analysis and Geometry, 2003
Let \(A_0\) be a self-adjoint operator in a Hilbert space \(\mathcal H\) and denote by \({\mathcal H}_s(A)\), \(s\in{\mathbb R}\), the scale of Hilbert spaces associated with \(A_0\). Singular finite rank perturbations of \(A_0\) are defined formally as \(A_{(\alpha)}=A_0+G\alpha G^*\), where \(G\) is an injective linear mapping from \(H={\mathbb C}^d\)
Derkach, V, Hassi, Seppo, De Snoo, H
openaire   +2 more sources

Non‐Rigid 3D Shape Correspondences: From Foundations to Open Challenges and Opportunities

Computer Graphics Forum, EarlyView.
Abstract Estimating correspondences between deformed shape instances is a long‐standing problem in computer graphics; numerous applications, from texture transfer to statistical modelling, rely on recovering an accurate correspondence map. Many methods have thus been proposed to tackle this challenging problem from varying perspectives, depending on ...
A. Zhuravlev, L. Bastian, D. Cao, N. El Amrani, P. Roetzer, V. Ehm, R. Marin, H. Nishizawa, S. Morishima, C. Theobalt, N. Navab, D. Cremers, F. Bernard, Z. Lähner, V. Golyanik   +14 more
wiley   +1 more source

Nonself-Adjoint Second-Order Difference Operators in Limit-Circle Cases

Abstract and Applied Analysis, 2012
We consider the maximal dissipative second-order difference (or discrete Sturm-Liouville) operators acting in the Hilbert space ℓ2𝑤(ℤ) (ℤ:={0,±1,±2,…}), that is, the extensions of a minimal symmetric operator with defect index (2,2) (in the Weyl ...
Bilender P. Allahverdiev
doaj   +1 more source

Karakteristik Operator Positif Pada Ruang Hilbert [PDF]

, 2015
Pada artikel ini akan dibahas mengenai definisi, contoh, sifat- sifat aljabar, dan beberapa karakteristik operator positif pada ruang Hilbert. Untuk menyelidiki karakteristik operator positif diperlukan konsep operator invertibel, operator self adjoint ...
Gunawan, Gunawan
core  

Bounds on the spectrum and reducing subspaces of a J-self-adjoint operator

, 2009
Given a self-adjoint involution J on a Hilbert space H, we consider a J-self-adjoint operator L=A+V on H where A is a possibly unbounded self-adjoint operator commuting with J and V a bounded J-self-adjoint operator anti-commuting with J.
Albeverio, Sergio, Motovilov, Alexander K., Tretter, Christiane   +2 more
core   +1 more source

Establishing Shape Correspondences: A Survey

Computer Graphics Forum, EarlyView.
Abstract Shape correspondence between surfaces in 3D is a central problem in geometry processing, concerned with establishing meaningful relations between surfaces. While all correspondence problems share this goal, specific formulations can differ significantly: Downstream applications require certain properties that correspondences must satisfy ...
A. Heuschling, H. Meinhold, L. Kobbelt
wiley   +1 more source

The Maximal Regularity of Nonlinear Second-Order Hyperbolic Boundary Differential Equations

Axioms
In this paper, we show the maximal regularity of nonlinear second-order hyperbolic boundary differential equations. We aim to show if the given second-order partial differential operator satisfies the specific ellipticity condition; additionally, if ...
Xingyu Liu
doaj   +1 more source

Optimal Portfolio Choice With Cross‐Impact Propagators

Mathematical Finance, EarlyView.
ABSTRACT We consider a class of optimal portfolio choice problems in continuous time where the agent's transactions create both transient cross‐impact driven by a matrix‐valued Volterra propagator, as well as temporary price impact. We formulate this problem as the maximization of a revenue‐risk functional, where the agent also exploits available ...
Eduardo Abi Jaber, Eyal Neuman, Sturmius Tuschmann   +2 more
wiley   +1 more source