DIRECT SUM OF LOWER SEMI-FRAMES IN HILBERT SPACES

Authors

Mohanarangan Hemalatha, National Institute of Technology Karnataka
P. Sam Johnson, National Institute of Technology Karnataka
P. K. Harikrishnan, Manipal Institute of Technology

Document Type

Article

Publication Title

Gulf Journal of Mathematics

Abstract

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.

First Page

412

Last Page

423

DOI

10.56947/gjom.v19i2.2803

Publication Date

4-20-2025

Recommended Citation

Hemalatha, Mohanarangan; Johnson, P. Sam; and Harikrishnan, P. K., "DIRECT SUM OF LOWER SEMI-FRAMES IN HILBERT SPACES" (2025). Open Access archive. 13380.
https://impressions.manipal.edu/open-access-archive/13380