7 research outputs found
Gradient based iterative solutions for general linear matrix equations
AbstractIn this paper, we present a gradient based iterative algorithm for solving general linear matrix equations by extending the Jacobi iteration and by applying the hierarchical identification principle. Convergence analysis indicates that the iterative solutions always converge fast to the exact solutions for any initial values and small condition numbers of the associated matrices. Two numerical examples are provided to show that the proposed algorithm is effective
The general solutions of singular and non-singular matrix fractional time-varying descriptor systems with constant coefficient matrices in Caputo sense
AbstractIn this paper, we generalize the time-varying descriptor systems to the case of fractional order in matrix forms. Moreover, we present the general exact solutions of the linear singular and non-singular matrix fractional time-varying descriptor systems with constant coefficient matrices in Caputo sense by using a new attractive method. Finally, two illustrated examples are also given to show our new approach
When the Tracy-Singh product of matrices represents a certain operation on linear operators
Given two linear transformations, with representing matrices and with
respect to some bases, it is not clear, in general, whether the Tracy-Singh
product of the matrices and corresponds to a particular operation on
the linear transformations. Nevertheless, it is not hard to show that in the
particular case that each matrix is a square matrix of order of the form ,
, and is partitioned into square blocks of order , then their
Tracy-Singh product, , is similar to , and the
change of basis matrix is a permutation matrix. In this note, we prove that in
the special case of linear operators induced from set-theoretic solutions of
the Yang-Baxter equation, the Tracy-Singh product of their representing
matrices is the representing matrix of the linear operator obtained from the
direct product of the set-theoretic solutions.Comment: arXiv admin note: substantial text overlap with arXiv:2303.0296
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The Tracy-Singh product of solutions of the Yang-Baxter equation
Let and be vector spaces over the same field with
and . Let and be
solutions of the Yang-Baxter equation. We show that the Tracy-Singh (or block
Kronecker) product of the matrices and with a particular partition into
blocks of and is the representing matrix of a solution of the
Yang-Baxter equation, , with
. Iteratively, it is possible to
construct from and an infinite family of solutions of the Yang-Baxter
equation.Comment: arXiv admin note: text overlap with arXiv:2212.1380