Kyungpook Mathematical Journal, cilt.63, sa.4, ss.561-569, 2023 (ESCI)
Anelementae R is strongly rad-clean provided that there exists an idempotent e e R such that a — e e U(R), ae = ea and eae e J(eRe). In this article, we completely determine when a 2 x 2 matrix over a commutative local ring is strongly rad clean. An application to matrices over power-series is also given.