On the trace of powers of square matrices

Using Cayley-Hamilton equation for matrices, we obtain a simple formula for trace of powers of a square matrix. The formula becomes simpler in particular cases. As a consequence, we also demonstrate the formula for trace of negative powers of a matrix.

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  • [1] Z. Akyuz and S. Halici, On some combinatorial identities involving the terms of generalized Fibonacci and Lucas sequences, Hacet. J. Math. Stat. 42 (4), 431–435, 2013.
  • [2] H. Avron, Counting triangles in large graphs using randomized matrix trace estimation, Proceedings of Kdd-Ldmta’10, 2010.
  • [3] D.J. Karia, K.M. Patil and H.P. Singh, On the sum of powers of square matrices, Oper. Matrices 13 (1), 221–229, 2019.
  • [4] J.K. Merikoski, On the trace and the sum of elements of a matrix, Linear Algebra Appl. 60, 177–185, 1984.
  • [5] V.P. Pugačev, Application of the trace of a matrix to the calculation of its eigenvalues, Ž. Vyčisl. Mat. i Mat. Fiz. 5, 114–116, 1965.
  • [6] A.V. Zarelua, On congruences for the traces of powers of some matrices, Tr. Mat. Inst. Steklova, 263 (Geometriya, Topologiya i Matematicheskaya Fizika. I), 85–105, 2008.