Abstract
In this paper, a system of coupled quaternion matrix equations with seven unknowns
is considered, where \(A_{i},B_{i},C_{i},D_{i},F_{i},G_{i}\) and \(E_{i}\) are given matrices, \(X_{i},Y_{i},Z_{i}\) and W are unknowns \((i=1,2)\). Some practical necessary and sufficient conditions for the existence of a solution to this system in terms of ranks and Moore–Penrose inverses are provided. The general solution to the system is given when the solvability conditions are satisfied. Applications that are discussed include the solvability conditions and general solutions to some quaternion matrix equations involving \(\phi \)-Hermicity. Some examples are given to illustrate the main results.
Similar content being viewed by others
References
Aghamollaei, Gh, Rahjoo, M.: On quaternionic numerical ranges with respect to nonstandard involutions. Linear Algebra Appl. 540, 11–25 (2018)
Dmytryshyn, A., Futorny, V., Klymchuk, T., Sergeichuk, V.V.: Generalization of Roth’s solvability criteria to systems of matrix equations. Linear Algebra Appl. 527, 294–302 (2017)
Futorny, V., Klymchuk, T., Sergeichuk, V.V.: Roth’s solvability criteria for the matrix equations \(AX-\widehat{X}B=C\) and \(X-A\widehat{X}B=C\) over the skew field of quaternions with an involutive automorphism \(q\rightarrow \hat{q}\). Linear Algebra Appl. 510, 246–258 (2016)
He, Z.H.: Structure, properties and applications of some simultaneous decompositions for quaternion matrices involving \(\phi \)-skew-Hermicity. Adv. Appl. Clifford Algebras 29, 6 (2019)
He, Z.H.: The general solution to a system of coupled Sylvester-type quaternion tensor equations involving \(\eta \)-Hermicity. Bull. Iran. Math. Soc. (2019). https://doi.org/10.1007/s41980-019-00205-7
He, Z.H., Agudelo, O.M., Wang, Q.W., De Moor, B.: Two-sided coupled generalized Sylvester matrix equations solving using a simultaneous decomposition for fifteen matrices. Linear Algebra Appl. 496, 549–593 (2016)
He, Z.H., Wang, Q.W., Zhang, Y.: A system of quaternary coupled Sylvester-type real quaternion matrix equations. Automatica 87, 25–31 (2018)
He, Z.H., Wang, Q.W.: A system of periodic discrete-time coupled Sylvester quaternion matrix equations. Algebra Colloq. 24, 169–180 (2017)
He, Z.H., Wang, Q.W.: A real quaternion matrix equation with with applications. Linear Multilinear Algebra 61, 725–740 (2013)
He, Z.H., Wang, Q.W.: The \(\eta \)-bihermitian solution to a system of real quaternion matrix equations. Linear Multilinear Algebra 62, 1509–1528 (2014)
He, Z.H., Liu, J., Tam, T.Y.: The general \(\phi \)-Hermitian solution to mixed pairs of quaternion matrix Sylvester equations. Electron. J. Linear Algebra. 32, 475–499 (2017)
He, Z.H., Wang, Q.W., Zhang, Y.: Simultaneous decomposition of quaternion matrices involving \(\eta \)-Hermicity with applications. Appl. Math. Comput. 298, 13–35 (2017)
He, Z.H., Wang, Q.W.: The general solutions to some systems of matrix equations. Linear Multilinear Algebra 63(10), 2017–2032 (2015)
Hungerford, T.W.: Algebra. Spring, New York (1980)
Jiang, T.S., Wei, M.S.: On a solution of the quaternion matrix equation \(X-A\widetilde{X}B=C\) and its application. Acta Math. Sin. 21(3), 483–490 (2005)
Jia, Z., Wei, M., Zhao, M.X., Chen, Y.: A new real structure-preserving quaternion QR algorithm. J. Comput. Appl. Math. 343, 26–48 (2018)
Kyrchei, I.: Explicit determinantal representation formulas for the solution of the two-sided restricted quaternionic matrix equation. J. Appl. Math. Comput. 58(1–2), 335–365 (2018)
Kyrchei, I.: Determinantal representations of solutions and Hermitian solutions to some system of two-sided quaternion matrix equations. J. Math. 12 (2018) (Article ID 6294672)
Kyrchei, I.: Determinantal representations of solutions to systems of quaternion matrix equations. Adv. Appl. Clifford Algebras 28, 23 (2018)
Kyrchei, I.: Cramer’s rules for Sylvester quaternion matrix equation and its special cases. Adv. Appl. Clifford Algebras 28, 90 (2018)
Kyrchei, I.: Determinantal representations of general and (skew-)Hermitian solutions to the generalized Sylvester-Type quaternion matrix equation. Abstr. Appl. Anal. 14 (Article ID 5926832) (2019)
Liu, X.: The \(\eta \)-anti-Hermitian solution to some classic matrix equations. Appl. Math. Comput. 320, 264–270 (2018)
Marsaglia, G., Styan, G.P.H.: Equalities and inequalities for ranks of matrices. Linear Multilinear Algebra 2, 269–292 (1974)
Rodman, L.: Topics in Quaternion Linear Algebra. Princeton University Press, Princeton (2014)
Rehman, A., Wang, Q.W., He, Z.H.: Solution to a system of real quaternion matrix equations encompassing \(\eta \)-Hermicity. Appl. Math. Comput. 265, 945–957 (2015)
Song, C., Chen, G., Zhang, X.: An iterative solution to coupled quaternion matrix equations. Filomat 26(4), 809–826 (2012)
Song, G.J., Wang, Q.W.: Condensed Cramer rule for some restricted quaternion linear equations. Appl. Math. Comput. 218(7), 3110–3121 (2011)
Took, C.C., Mandic, D.P.: Augmented second-order statistics of quaternion random signals. Signal Process. 91, 214–224 (2011)
Took, C.C., Mandic, D.P.: The quaternion LMS algorithm for adaptive filtering of hypercomplex real world processes. IEEE Trans. Signal Process. 57, 1316–1327 (2009)
Took, C.C., Mandic, D.P.: Quaternion-valued stochastic gradient-based adaptive IIR filtering. IEEE Trans. Signal Process. 58(7), 3895–3901 (2010)
Took, C.C., Mandic, D.P., Zhang, F.Z.: On the unitary diagonalization of a special class of quaternion matrices. Appl. Math. Lett. 24, 1806–1809 (2011)
Wang, Q.W., He, Z.H.: Some matrix equations with applications. Linear Multilinear Algebra 60, 1327–1353 (2012)
Wang, Q.W., Jiang, J.: Extreme ranks of (skew-)Hermitian solutions to a quaternion matrix equation. Elctron. J. Linear Algebra. 20, 552–573 (2010)
Wang, Q.W., Chang, H.X., Lin, C.Y.: P-(skew)symmetric common solutions to a pair of quaternion matrix equations. Appl. Math. Comput. 195, 721–732 (2008)
Wang, Q.W.: Bisymmetric and centrosymmetric solutions to system of real quaternion matrix equations. Comput. Math. Appl. 49, 641–650 (2005)
Wang, Q.W., van der Woude, J.W., Chang, H.X.: A system of real quaternion matrix equations with applications. Linear Algebra Appl. 431, 2291–2303 (2009)
Wei, M.S., Li, Y., Zhang, F., Zhao, J.: Quaternion Matrix Computations. Nova Science Publishers, New York (2018)
Yuan, S.F., Wang, Q.W., Yu, Y.B., Tian, Y.: On Hermitian solutions of the split quaternion matrix equation \(AXB+CXD=E\). Adv. Appl. Clifford Algebras 27(2), 1–18 (2017)
Zhang, X.: A system of generalized Sylvester quaternion matrix equations and its applications. Appl. Math. Comput. 273, 74–81 (2016)
Zhang, Y., Wang, R.H.: The exact solution of a system of quaternion matrix equations involving \(\eta \)-Hermicity. Appl. Math. Comput. 222, 201–209 (2013)
Acknowledgements
The author would like to thank the anonymous referees for their valuable suggestions.
Author information
Authors and Affiliations
Corresponding author
Additional information
Communicated by Pierre-Philippe Dechant
Publisher's Note
Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
This research was supported by the National Natural Science Foundation of China (Grant no. 11801354).
Rights and permissions
About this article
Cite this article
He, ZH. A System of Coupled Quaternion Matrix Equations with Seven Unknowns and Its Applications. Adv. Appl. Clifford Algebras 29, 38 (2019). https://doi.org/10.1007/s00006-019-0955-2
Received:
Accepted:
Published:
DOI: https://doi.org/10.1007/s00006-019-0955-2