Back to matchesWe found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleIntertwining Operators between Two Orthogonal Projections.AuthorsDeng, Chunyuan; Liang, WentingAbstractLet P and Q be a pair of orthogonal projections. In this note we will prove that there exists a unitary U ∈ B (H) such that UP = QU and UQ = PU if and only if dim [ R (P) ∩ N (Q) ] = dim [ N (P) ∩ R (Q) ].SubjectsUNITARY operators; ORTHOGRAPHIC projectionPublicationNumerical Functional Analysis & Optimization, 2020, Vol 41, Issue 14, p1794ISSN0163-0563Publication typeAcademic JournalDOI10.1080/01630563.2020.1813166