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Sen, J and Sain, D and Paul, K (2021) Orthogonality and norm attainment of operators in semi-Hilbertian spaces. In: Annals of Functional Analysis, 12 (1).
Sen, J and Sain, D and Paul, K (2021) On approximate orthogonality and symmetry of operators in semi-Hilbertian structure. In: Bulletin des Sciences Mathematiques, 170 .
Sen, J and Sain, D and Paul, K (2021) Orthogonality and norm attainment of operators in semi-Hilbertian spaces. In: Annals of Functional Analysis, 12 (1).