23. P. Sam Johnson and K. Mahesh Krishna, “Commutators Close to the Identity in Unital C*-Algebras”, Proceedings - Mathematical Sciences (accepted for publication).
22. K. Mahesh Krishna and P. Sam Johnson, “Perturbation of p-Approximate Schauder Frames for Separable Banach Spaces”, Poincare Journal of Analysis and Applications (accepted for publication).
21. K. Mahesh Krishna and P. Sam Johnson, “Expansion of Weak Reconstruction Sequences to Approximate Schauder Frames for Banach Spaces”, Asian-European Journal of Mathematics (accepted for publication).
20. K. Mahesh Krishna and P. Sam Johnson, “Dilation Theorem for p-Approximate Schauder Frames for Separable Banach Spaces”, Palestine Journal of Mathematics (accepted for publication).
19. K. Mahesh Krishna and P. Sam Johnson, “New Identity on Parseval p-Approximate Schauder Frames and Applications”, Journal of Interdisciplinary Mathematics (accepted for publication).
18. P. Sam Johnson, Vinoth A and K. Kamaraj, “Fuglede-Putnam Type Commutativity Theorems for EP Operators”, Malaya Journal of Matematik (accepted for publication).
17. K. Mahesh Krishna and P. Sam Johnson, “Towards Characterizations of Approximate Schauder Frame and Its Duals for Banach Spaces”, J. Pseudo-Differ. Oper. Appl., 12(1), 2021, Art. 9, 13 pp.
16. Athira Satheesh K, P. Sam Johnson and K. Kamaraj, “Estimates of Norms on Krein Spaces”, Aust. J. Math. Anal. Appl. 17 (2020), No. 2, Art. 18, 10 pp.
15. P. Sam Johnson, “On Semiclosed Operators with Closed Range”, Canad. J. Appl. Math. 2 (2020), No. 2, 18-22.
14. P. Sam Johnson and S. Balaji, "Convergence of Operators with Closed Range", Khayyam J. Math. 5 (2019) No. 2, 132-138.
13. Mahesh Krishna and P. Sam Johnson, "Quotient Operators and the Open Mapping Theorem", Filomat 32:18 (2018), 6221–6227.
12. P. Sam Johnson and Vinoth A, "Product and Factorization of Hypo-EP Operators," Special Matrices 6 (2018), 376-382.
11. B. Parvathalu and P. Sam Johnson, "Construction of Mercedes-Benz Frame in Rn", International Journal of Applied and Computational Mathematics, December 2017, Issue 1 Supplement, 511-519.
10. G. Ramu and P. Sam Johnson, "Frames for Operators in Banach Spaces", Acta Mathematica Vietnamica, 42 (2017), 665-673.
9. Vinoth A and P. Sam Johnson, "On Sum and Restriction of Hypo-EP Operators", Funct. Anal. Approx. Comput. 9 (1) (2017), 37-41.
8. G. Ramu and P. Sam Johnson, "Frame Operators of K-frames", Boletin de la Sociedad Espanola de Matematica Aplicada, SeMA Journal (2016) 73 : 171-181.
7. P. Sam Johnson and G. Ramu, "Class of Bounded Operators associated with an Atomic System", Tamkang Journal of Mathematics, Vol.46, No.1, 85-90, March 2015.
6. P. Sam Johnson, “Multiplication Operators with Closed Range in Operator Algebras”, Journal of Analysis and Number Theory, Vol. 1, No.1, 1-5, 2013.
5. P. Sam Johnson and S. Balaji, “On Semiclosed Subspaces of Hilbert Spaces”, International Journal of Pure and Applied Mathematics, Vol. 79, No. 2, 2012, 249-258.
4. P. Sam Johnson and S. Balaji, “Hyers-Ulam Stability of Linear Operators in Frechet Spaces”, Applied Mathematics and Information Sciences, Vol. 6, No.3, 525-528 (2012).
3. P. Sam Johnson and S. Balaji, “On Linear Operators with Closed Range”, Journal of Applied Mathematics and Bioinformatics, Vol.1, No.2, 2011, 175-182.
2. P. Sam Johnson and C. Ganesa Moorthy, “Composition of Operators with Closed Range”, Journal of Analysis, 14(2006), 79-80.
1. C. Ganesa Moorthy and P. Sam Johnson, “Composition of Closed Range Operators”, Journal of Analysis, 12(2004), 165-169.
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Professor - HAG, Former Dean (Students Welfare)
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Professor - HAG