Faktorisasi Matriks Hermitian Nonkomutatif Berdasarkan Trace

  • Mira Wadu Universitas Nusa Cendana
  • Albert Mario Kumanireng Universitas Nusa Cendana
  • Arista Marlince Tamonob Universitas Nusa Cendana
Keywords: hermitian matrix, division ring, trace, dieudonné determinant, matrix factorization

Abstract

This article studies the factorization of Hermitian matrices over a division ring based on their trace values. The main result shows that the trace determines the minimum number of Hermitian factors required in factorization depending on the trace value, namely four factors are sufficient for matrices with zero trace, while for matrices with nonzero trace, one additional diagonalizable factor is required. This result indicates a relationship between additive invariance (trace) and multiplicative invariance (Dieudonné determinant) in noncommutative linear algebra.

References

Anton, H., & Kaul, A. (2019). Elementary linear algebra (12th edition, Wiley loose-leaf print edition). Wiley.

Bien, M. H., Dung, T. H., Ha, N. T. T., & Son, T. N. (2022). Decompositions of matrices over division algebras into products of commutators. Linear Algebra and Its Applications, 646, 119–131. https://doi.org/10.1016/j.laa.2022.03.025

Bien, M. H., Dung, T. H., Ha, N. T. T., & Son, T. N. (2023). Involution widths of skew linear groups generated by involutions. Linear Algebra and Its Applications, 679, 305–326. https://doi.org/10.1016/j.laa.2023.09.019

Bien, M. H., Son, T. N., Thuy, P. T. T., & Truong, L. Q. (2024). Products of unipotent matrices of index 2 over division rings. Acta Mathematica Hungarica, 173(1), 74–100. https://doi.org/10.1007/s10474-024-01427-w

Bikchentaev, A. M., Kittaneh, F., Moslehian, M. S., & Seo, Y. (2024). Trace Inequalities: For Matrices and Hilbert Space Operators. Springer Nature Singapore. https://doi.org/10.1007/978-981-97-6520-1

Botha, J. D. (1998). Products of diagonalizable matrices. Linear Algebra and Its Applications, 273(1), 65–82. https://doi.org/10.1016/S0024-3795(97)00344-3

Brenner, J. L. (1968). Applications of the Dieudonné determinant. Linear Algebra and Its Applications, 1(4), 511–536. https://doi.org/10.1016/0024-3795(68)90025-6

Danchev, P. V., Dung, T. H., & Son, T. N. (2024). Products of traceless and semi-traceless matrices over division rings and their applications. International Journal of Algebra and Computation, 34(03), 331–349. https://doi.org/10.1142/S0218196724500115

Doliwa, A. (2022). Non-commutative Hermite–Padé approximation and integrability. Letters in Mathematical Physics, 112(4), 68. https://doi.org/10.1007/s11005-022-01560-z

Gatephan, P., & Rodtes, K. (2025). Products of Hermitian matrices over division rings. Linear Algebra and Its Applications, 710, 531–545. https://doi.org/10.1016/j.laa.2025.02.016

Klep, I., Špenko, Š., & Volčič, J. (2018). Positive trace polynomials and the universal Procesi-Schacher conjecture: POSITIVE TRACE POLYNOMIALS. Proceedings of the London Mathematical Society, 117(6), 1101–1134. https://doi.org/10.1112/plms.12156

Lord, S., McDonald, E., Sukochev, F., & Zanin, D. (2023). Trace Formulas. De Gruyter. https://doi.org/10.1515/9783110700176

Nie, J., & Yang, Z. (2020). Hermitian Tensor Decompositions. SIAM Journal on Matrix Analysis and Applications, 41(3), 1115–1144. https://doi.org/10.1137/19M1306889

Radjavi, H. (1969). Products of hermitian matrices and symmetries. Proceedings of the American Mathematical Society, 21(2), 369–372. https://doi.org/10.1090/S0002-9939-1969-0240116-9

Volčič, J. (2019). Stable Noncommutative Polynomials and Their Determinantal Representations. SIAM Journal on Applied Algebra and Geometry, 3(1), 152–171. https://doi.org/10.1137/18M1206734

Published
2025-12-21