Results 181 to 190 of about 221 (205)

Linear Preserver Problems

2006
Peter Šemrl
exaly   +2 more sources

THREE LINEAR PRESERVER PROBLEMS

Mathematics and the 21st Century, 2001
exaly   +2 more sources

Linearity preserving modified LDA methods for unsteady advection-diffusion problems

Computers & Mathematics with Applications, 2023
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Hossain Chizari, Vishal Singh, Farzad Ismail   +2 more
openaire   +1 more source

A HUA TYPE THEOREM AND LINEAR PRESERVER PROBLEMS

Mathematical Proceedings of the Royal Irish Academy, 2009
In this interesting paper, the author studies linear maps \(\phi:\mathcal A\to \mathcal B\) between Banach algebras \(\mathcal A,\mathcal B\) that strongly preserve different sorts of invertibility, such as generalized invertibility, group invertibility, Drazin invertibility, Moore-Penrose invertibility, and invertibility.
openaire   +2 more sources

A linearity-preserving technique for finite volume schemes of anisotropic diffusion problems on polygonal meshes

Mathematics and Computers in Simulation, 2022
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Cheng Dong, Tong Kang
openaire   +2 more sources

A stabilized linearity-preserving scheme for the heterogeneous and anisotropic diffusion problems on polygonal meshes

Journal of Computational Physics, 2012
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Jiming Wu, Zhiming Gao, Zihuan Dai
openaire   +1 more source

Preservation of local linearity by neighborhood subspace scaling for solving the pre-image problem

Journal of Zhejiang University SCIENCE C, 2014
An important issue involved in kernel methods is the pre-image problem. However, it is an ill-posed problem, as the solution is usually nonexistent or not unique. In contrast to direct methods aimed at minimizing the distance in feature space, indirect methods aimed at constructing approximate equivalent models have shown outstanding performance.
Sheng-kai Yang, Jian-Yi Meng, Hai-bin Shen   +2 more
openaire   +1 more source

On some linear and nonlinear preserver problems

p.
Dhifaoui, Kawther, Mabrouk, Mohamed
openaire   +1 more source

A convexity problem and a new proof for linearity preserving additions of fuzzy intervals

Fuzzy Sets and Systems, 2008
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +1 more source

Linear theory of boundary preserving regularization of low-level vision problems

Annual Meeting Optical Society of America, 1987
Many problems in low-level vision are ill-posed in the sense that their solution does not exist, is not unique, or does not depend continuously on the data. Following the ideas of Poggio and Torre1, we approach such problems by using the Tikhonov and Arsenin2 regularization.
David Shulman, John Aloimonos
openaire   +1 more source