Results 51 to 60 of about 4,846,198 (334)
Convergence of Some Iterative Methods for Symmetric Saddle Point Linear Systems
SIAM Journal on Matrix Analysis and Applications, 2019 We consider the iterative solution of linear systems with a symmetric saddle point system matrix.
Y. Notay
semanticscholar +1 more source
On the eigenvalues of a class of saddle point matrices [PDF]
Numerische Mathematik, 2006 We study spectral properties of a class of block 2 × 2 matrices that arise in the solution of saddle point problems. These matrices are obtained by a sign change in the second block equation of the symmetric saddle point linear system. We give conditions for having a (positive) real spectrum and for ensuring diagonalizability of the matrix.
M. Benzi, SIMONCINI, VALERIA
openaire +5 more sources
Covalent Organic Frameworks for Photocatalysis
Advanced Materials, EarlyView.This review provides an overview of recent advances in covalent organic frameworks (COFs) for photocatalysis, focusing on sustainable energy applications like water splitting, hydrogen peroxide generation, and CO2 and N2 reduction. It discusses design principles, structure‐function relationships, challenges in COF photocatalysis, and strategies to ...
Bikash Mishra +6 more
wiley +1 more source
ϵ-Henig Saddle Points and Duality of Set-Valued Optimization Problems in Real Linear Spaces
The Scientific World Journal, 2013 We study ϵ-Henig saddle points and duality of set-valued optimization problems in the setting of real linear spaces. Firstly, an equivalent characterization of ϵ-Henig saddle point of the Lagrangian set-valued map is obtained.
Zhi-Ang Zhou
doaj +1 more source
Iterative Methods for Double Saddle Point Systems
SIAM Journal on Matrix Analysis and Applications, 2018 We consider the iterative solution of a class of linear systems with double saddle point structure. Several block preconditioners for Krylov subspace methods are described and analyzed.
F. Beik, M. Benzi
semanticscholar +1 more source
Advanced Materials, EarlyView.This review explores the integration of responsive materials and soft robotic actuators with implantable electronics to address key challenges in bioelectronic medicine. By enabling shape actuation, these technologies improve deployment, adaptability, and accuracy in minimally invasive procedures.
Chaoqun Dong, George G. Malliaras
wiley +1 more source
Mechanical Resonant Sensing of Spin Texture Dynamics in a 2D Antiferromagnet
Advanced Materials, EarlyView.Detection of antiferromagnetic spin texture in a 2D magnetic crystal is achieved through nanomechanical resonators at radio frequencies. Sharp magnetic transitions that lead to abrupt changes in mechanical linear and nonlinear responses are assigned to antiferromagnetic domain motions.
S M Enamul Hoque Yousuf +10 more
wiley +1 more source
Advanced Materials, EarlyView.This review highlights the potential of 2D‐2D heterostructures (HRs) in advancing monovalent ion‐based energy storage. It examines their role in tailoring charge interactions mechanisms, optimizing interfacial properties, and overcoming the limitations of individual layered materials.
Neetu Bansal +6 more
wiley +1 more source
Advanced Optical Materials, EarlyView.A new heavy‐atom‐free, donor–acceptor‐type organoboron luminophore has been synthesized, which exhibits red room‐temperature phosphorescence (RTP) in the crystalline state. Furthermore, the amorphous solid generated by grinding shows green thermally activated delayed fluorescence (TADF), displaying distinct mechanochromic luminescence (MCL) through ...
Yohei Adachi +7 more
wiley +1 more source
The alternate direction iterative methods for generalized saddle point systems
Journal of Inequalities and Applications, 2019 The paper studies two splitting forms of generalized saddle point matrix to derive two alternate direction iterative schemes for generalized saddle point systems.
Shuanghua Luo +2 more
doaj +1 more source