Results 101 to 110 of about 910,007 (330)

On Sign Patterns of 4 × 4 Algebraically Positive Matrices

Journal of Mathematics
A square matrix A with real entries is said to be algebraically positive (AP) if there exists a real polynomial f such that fA is a positive matrix. A square sign pattern matrix A is said to allow algebraic positivity if there is an AP matrix A whose ...
Yan Tian, Siyuan Jiang, Aiwei Wang
doaj   +1 more source

Generalized Symmetric Fermatean Neutrosophic Fuzzy Matrices [PDF]

Neutrosophic Sets and Systems
This study explores a new type of matrix called a range-symmetric Fermatean neutrosophic fuzzy matrix (FNFM), inspired by the concept of range-Hermitian matrices.
M.Anandhkumar, A. Bobin, S. M. Chithra, V. Kamalakannan   +3 more
doaj   +1 more source

Four algorithms to solve symmetric multi-type non-negative matrix tri-factorization problem

, 2021
Rok Hribar, Timotej Hrga, Gregor Papa, Gašper Petelin, Janez Povh, Nataša Pržulj, Vida Vukašinović   +6 more
openalex   +2 more sources

Constructive Matrix Theory for Higher Order Interaction II: Hermitian and Real Symmetric Cases [PDF]

, 2022
Thomas Krajewski, Vincent Rivasseau, Vasily Sazonov   +2 more
openalex   +1 more source

Enhancing Metal‐Support Interactions of Ru Catalysts via Relaxation of Oxygen Vacancies for Hydrogen Production

Advanced Functional Materials, EarlyView.
Designing stable Ru nanoparticle catalyst remains a critical challenge in electrochemical applications. Here, a strategy is presented to stabilize Ru catalysts by leveraging Ce‐doped ZrO2 supports (ZrCeO2‐x), which enhance catalyst durability and activity through electronic metal‐support interactions and stabilized oxygen vacancies.
Mansu Kim, Jonghwan Park, Hyuk Choi, Sohui Kim, Injoon Jang, Hyun You Kim, Namgee Jung, Sung Jong Yoo, Joseph T. Hupp, Dongmok Whang   +9 more
wiley   +1 more source

Locating Eigenvalues of a Symmetric Matrix whose Graph is Unicyclic

, 2021
Rodrigo O. Braga, Virgı́nia M. Rodrigues, Ricardo Silva   +2 more
openalex   +2 more sources

Near‐Infrared Emitting Lanthanide Catecholate Giant Single Crystals – Morphology Control and Photon Down‐Conversion

Advanced Functional Materials, EarlyView.
Controlled syntheses of lanthanide coordination polymers based on the dihydroxybenzoquinone (DHBQ) organic linker afforded large single crystals of Ln‐DHBQ CPs (Ln = Yb, Nd). A novel structural variant of Yb‐DHBQ is identified by means of single crystal diffraction analysis.
Marina I. Schönherr, Alexander Biewald, Andre Mähringer, Thaddäus J. Koller, Peter Mayer, Markus Döblinger, Achim Hartschuh, Dana D. Medina   +7 more
wiley   +1 more source

Double Helical Plasmonic Antennas

Advanced Functional Materials, EarlyView.
Plasmonic double helical antennas funnel circularly polarized light to the nanoscale, offering strong chiroptical interaction and directional light emission. Extending a single helix design tool, this study combines numerical modeling with experimental validation, revealing large, broadband dissymmetry factors in the visible range.
Aleksei Tsarapkin, Luka Zurak, Krzysztof Maćkosz, Lorenz Löffler, Victor Deinhart, Ivo Utke, Thorsten Feichtner, Katja Höflich   +7 more
wiley   +1 more source

A matrix inversion approach of computing T‐matrix for axially symmetrical particles of extreme shape and dielectrically large dimension [PDF]

, 2012
Xinyi Shen, Qiming Qin, Yang Hong, Guifu Zhang   +3 more
openalex   +1 more source

The symmetric N-matrix completion problem

Linear Algebra and its Applications, 2005
A real \(n\times n\) matrix is called an \(N\)-matrix if all its principal minors are negative. Consider a partial symmetric matrix \(A\) where some entries are unspecified. The problem under consideration is whether it is possible to determine these unspecified entries in such a way that the resulting fully specified symmetric matrix is an \(N ...
Araújo, C. Mendes, Torregrosa, Juan R., Urbano, Ana M.   +2 more
openaire   +2 more sources