1.  Toeplitz, Hankel, de Branges and two truncated matrix moment problems (with Harry Dym), Integral Equations Operator Theory 97 (2025), no. 3, Paper No. 24.

2. A Bishop-Phelps-Bollobás theorem for bounded analytic functions (with Neeru Bala, Jaydeb Sarkar and Aryaman Sensarma), Journal of Functional Analysis, 284(2023), No. 6,  Paper No. 109834 (20 pages).

3.  Norms of basic operators in vector valued model spaces and de Branges spaces (with Harry Dym), Integral Equations and Operator Theory, 94 (2022), No. 4, Paper No. 41. 

4.  Pseudo S-spectra of special operators in quaternionic Hilbert spaces (with Santhosh Kumar Pamula),  Linear Algebra and its Applications, 656(2023), pp. 345-367.  

5.  Idempotent, model, and Toeplitz operators attaining their norms (with Neeru Bala, Jaydeb Sarkar, and Aryaman Sensarma), Linear Algebra and Its Applications, 622 (2021), pp. 150-165.

6.  Decomposition of the (n,ε)-pseudospectrum of an element of a Banach algebra (with S. H. Kulkarni), Advances in Operator Theory, 5(2020), No. 1, pp. 248-260. 

7. Continuity of the (n, ε)-pseudospectrum in Banach algebras (with S. H. Kulkarni and Markus Seidel), Integral Equations and Operator Theory, 91(2019), No. 4, Art. 32, 17 pp.

8.  The (n, ε)-pseudospectrum of an element of a Banach algebra (with S. H. Kulkarni),  Journal of Mathematical Analysis and Applications, 464 (2018), No. 1, pp. 939-954.

1.  Invited talk on ``Two truncated matrix moment problems and de Branges spaces'' in 'Operator Algebra and Related Topics' at IIT Bombay (COART-25@IITB) during February 24 - 28, 2025. 

2. Invited talk on ``Two truncated matrix moment problems'' at a National Seminar on  "Recent Trends in Analysis and Allied Areas" during September 12-14, 2024, University of Jammu.

3. Invited talk on ``Toeplitz, Hankel, de Branges and two truncated matrix moment problems'' at a two Days National Conference on "Recent Advances in Mathematics" on March 27-28, 2024, Central University of Jammu. 

4. Invited talk on ``Toeplitz, de Branges, Hankel and two truncated matrix moment problems'', Sept 29,2023,  IIT Palakkad, Kerala, India. 

5.  Invited talk on " Norms of basic operators in vector valued model spaces and de Branges spaces'' at "UHaifa/Technion Operator Algebras and Operator Theory Seminar",  March 29, 2023,  The Technion - Israel Institute of Technology, Israel

6.  Contributed talk on ``Norms of basic operators in vector valued model spaces" at International Workshop on Operator Theory and its Applications (IWOTA), Sept 6-10, 2023, Krakow, Poland.

7. Invited talk (online) on '' Norm attainment of Toeplitz operators" at Workshop on Functional analysis and its applications (WFAA)-2022,  Jan 14-16, IIIT Allahabad.

8.  Invited talk (online) on " Norm attainment of Model Operators", Feb 12, 2021, IIT Gandhinagar.

9.  Invited talk on “The continuity of the (n, ε)-pseudospectrum”, International Conference on Banach Algebrs, Harmonic Analysis, and Operator Theory, Nov 20-22, 2018,      Sardar Patel University, Gujarat.

10. Contributed talk  on “On the continuity of the (n, ε)-pseudospectrum of an element of a Banach algebra”, SHK Fest, a conference on the occasion of 65th birthday of Prof. S. H. Kulkarni, June 18-22 , 2018, I.I.T. Madras. 

11.  Contributed talk on “The (n, ε)-pseudospectrum of an element of a Banach algebra”, International Workshop on Operator Theory and its Applications (IWOTA), August 14-18, 2017, TU Chemnitz, Germany.

• Geometric Function Theory, Indian Statistical Institute, Chennai Centre, Feb 9, 2015.

• Annual Foundation School (AFS II), IISER Trivandrum, May 11 - June 6, 2015.

• Advanced Instructional School (AIS) in Operator Theory and Operator Algebras, IMSc, Chennai, Feb 1 - 21, 2016.

• ATMW on Modern aspects of Function Theory, Operator Theory & Operator Algebras,

ISI Bangalore, March 5 - 10, 2018.

• AIS in Operator Theory, IIT Kanpur, Dec 16 - 28, 2019.

• “KBS Fest, A conference on the occasion of 75th birthday of Professor Kalyan Bidhan Sinha”, 12-14 Dec, 2019, ISI Bangalore, India.

         Reviewer Duties

1. Indian Journal of Pure and Applied Mathematics

2. Proceedings of the Indian Academy of Sciences : Mathematical Sciences

3. Journal of Analysis

4. Filomat

5. MathScinet Review

6. zbMATH Review