BULLETIN OF THE MALAYSIAN MATHEMATICAL SCIENCES SOCIETY, cilt.32, sa.2, ss.151-159, 2009 (SCI-Expanded)
Continuous linear operators from l(1) (A, X) and c(0) (A, X) into lambda (A, X), lambda = l(1), l(infinity), or c(0), for a normed space X are investigated. It is shown that such an operator has an operator matrix form whenever A is the set of positive integers.