Browsing by Author "Harikrishnan, P.K."

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    DIRECT SUM OF LOWER SEMI-FRAMES IN HILBERT SPACES
    (Canadian University of Dubai, 2025) Hemalatha, M.; Johnson, P.S.; Harikrishnan, P.K.
    In this paper, structural properties of lower semi-frames in separable Hilbert spaces are explored with a focus on transformations under linear operators (may be unbounded). Also, the direct sum of lower semi-frames, providing necessary and sufficient conditions for the preservation of lower semiframe structure, is examined. © 2025, Canadian University of Dubai. All rights reserved.