Tridiagonal M-matrices with tridiagonal Moore-Penrose inverse

M.I. Bueno, Susana Furtado, K. Kranthi Priya and K.C. Sivakumar

Applied Mathematics and Computation, 2026, vol. 508, issue C

Abstract: In this paper, we characterize the singular tridiagonal M-matrices whose Moore-Penrose inverse is tridiagonal, extending the recent result (Barreras and Peña, 2019) describing the nonsingular tridiagonal M-matrices whose inverse is tridiagonal.

Keywords: M-matrix; Moore-Penrose inverse; Tridiagonal matrix (search for similar items in EconPapers)
Date: 2026
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Persistent link: https://EconPapers.repec.org/RePEc:eee:apmaco:v:508:y:2026:i:c:s0096300325003662

DOI: 10.1016/j.amc.2025.129640

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