Çakan C.Aydin C.2024-08-042024-08-0420041300-686Xhttps://doi.org/10.3390/mca9030409https://hdl.handle.net/11616/91264The Kr-core of a complex valued sequence has been introduced in [5]. In this paper, we have determined a class of matrices such that K r - core (Ax) ? Kr - core (x) hold for all x? 1?. Also; we have defined a new type of absolute equivalence, r -absolute equivalence, and characterized these type of matrices.eninfo:eu-repo/semantics/openAccessAbsolute equivalenceMatrix transformations and core theoremsSequence spacesArticle9340941610.3390/mca90304092-s2.0-11144233283N/A