Results 91 to 100 of about 277,976 (316)
Symmetric and skew-symmetric block-Kronecker linearizations [PDF]
arXiv, 2016 Many applications give rise to structured matrix polynomials. The problem of constructing structure-preserving strong linearizations of structured matrix polynomials is revisited in this work and in the forthcoming ones \cite{PartII,PartIII}. With the purpose of providing a much simpler framework for structure-preserving linearizations for symmetric ...
arxiv
The symmetric N-matrix completion problem
Linear Algebra and its Applications, 2005 AbstractAn n×n matrix is called an N-matrix if all its principal minors are negative. In this paper, we are interested in the symmetric N-matrix completion problem, that is, when a partial symmetric N-matrix has a symmetric N-matrix completion. Here, we prove that a partial symmetric N-matrix has a symmetric N-matrix completion if the graph of its ...
Araújo, C. Mendes +2 more
openaire +3 more sources
Advanced Engineering Materials, EarlyView.This study models static recrystallization in interstitial free‐steel using coupled crystal plasticity and phase‐field simulations. The method directly links heterogeneous dislocation density to nucleation site prediction, eliminating reliance on empirical assumptions.
Alireza Rezvani +2 more
wiley +1 more source
Scalable Fabrication of Height‐Variable Microstructures with a Revised Wetting Model
Advanced Engineering Materials, EarlyView.Height‐variable microstructures are fabricated using a scalable CO2 laser machining approach, enabling precise control of wettability through structural gradients. Classical wetting models fail to capture height‐induced effects, necessitating a revised theoretical framework.
Prabuddha De Saram +2 more
wiley +1 more source
Parametrization of transition energy-momentum tensor form factors
Physics Letters B, 2022 While the Lorentz structures of the N→Δ transition matrix element of the vector current are well-known, that of the symmetric energy-momentum tensor current is unknown.
June-Young Kim
doaj
Noncommutative symmetric functions VI: Free quasi-symmetric functions and related algebras [PDF]
International Journal of Algebra and Computation 12 (2002),
671-717, 2001 This article is devoted to the study of several algebras which are related to symmetric functions, and which admit linear bases labelled by various combinatorial objects: permutations (free quasi-symmetric functions), standard Young tableaux (free symmetric functions) and packed integer matrices (matrix quasi-symmetric functions).
arxiv
Advanced Engineering Materials, EarlyView.This study presents a 3D representative volume element‐based simulation approach to predict mesoscopic residual stress and strain fields in silicon solid solution‐strengthened ductile cast iron. By modeling phase transformation kinetics with an enhanced Johnson–Mehl–Avrami–Kolmogorov model, the effects of varying cooling rates on residual stresses are ...
Lutz Horbach +6 more
wiley +1 more source
F1000ResearchThe concept of secondary range symmetric matrices is introduced here. Some characterizations as well as the equivalent conditions for a range symmetric matrix to be secondary range symmetric matrix is given.
Divya Shenoy
doaj
Adaptive Clustering via Symmetric Nonnegative Matrix Factorization of the Similarity Matrix
Algorithms, 2019 The problem of clustering, that is, the partitioning of data into groups of similar objects, is a key step for many data-mining problems. The algorithm we propose for clustering is based on the symmetric nonnegative matrix factorization (SymNMF) of a ...
Paola Favati +3 more
doaj +1 more source
Time Derivative of Rotation Matrices: A Tutorial [PDF]
arXiv, 2016 The time derivative of a rotation matrix equals the product of a skew-symmetric matrix and the rotation matrix itself. This article gives a brief tutorial on the well-known result.
arxiv