Johnson, P.S.Balaji, S.2026-02-052012International Journal of Pure and Applied Mathematics, 2012, 79, 2, pp. 249-25813118080https://idr.nitk.ac.in/handle/123456789/26955Semiclosed subspaces possess many special features that distinguish them from arbitrary subspaces. Few properties of proper dense semiclosed subspaces of Hilbert spaces are discussed. © 2012 Academic Publications, Ltd.Operator rangesSemiclosed subspaces