Savas, E.Sevli, H.Rhoades, B. E.2025-05-102025-05-1020090126-67052-s2.0-67949085176https://hdl.handle.net/20.500.14720/16540Sevli, Hamdullah/0009-0003-0258-031XA lower triangular infinite matrix is called a triangle if there are no zeros on the principal diagonal. The main result of this paper gives a minimal set of sufficient conditions for a triangle T : A(k) -> A(k) for the sequence space A(k) defined as follows: A(k) := {{s(n)} : (n=1)Sigma(infinity)n(k-1)vertical bar a(n)vertical bar(k) < infinity, a(n) = s(n) - s(n-1)}.eninfo:eu-repo/semantics/closedAccessBounded OperatorTriangular MatricesA(K) SpacesWeighted Mean MethodsArticle322Q2Q1223231WOS:000265913500010