Show 10 5 10 15 20 50 100 250 Sort by year (new to old) Actions Download search results Subscribe to news feed Your filters: cql: author="Ratnakumar, P.K." or (type any "bookEditor issueEditor" and editor="Ratnakumar, P.K.") Add to list Journal Article A1 open access Non-isometric translation and modulation invariant Hilbert spaces P.K. Ratnakumar, Joachim Toft and Jasson Vindas Diaz (UGent) (2025) JOURNAL OF MATHEMATICAL ANALYSIS AND APPLICATIONS. 550(1).