(1) Satellite Conference on International Congress of Mathematicians 2010 (ICM 2010) on Mathematics in Science and Technology during August 14-17, 2010 in Delhi, India, and presented a paper entitled “Continuity of pseudo-differential operator Hm,a involving Hankel translation and Hankel convolution on a Gevrey space.”
(2) International Congress in Honour of Prof. H. M. Shrivastava on his 70th Birth Anniversary at Uludag University, Bursa, TURKEY Organized by Uludag University, Faculty of Arts and Science, Department of Mathematics during August 18-21, 2010 in Bursa, TURKEY and gave a talk entitled “n- Dimensional Sobolev type spaces involving Hankel transformation.”
(3) International Conference on Mathematical Sciences in Honour of Prof. A. M. Mathai at Department of Statistics during January 03-05, 2011 in St. Thomas College Pala, Kottayam, Kerala, India, and presented a paper entitled “Continuity of Hankel potential involving Hankel translation on certain ultradifferentiable function spaces.”
(4) 7th International Congress on Industrial & Applied Mathematics during July 18-22, 2011 in Vancouver, British Columbia, CANADA, and presented a poster entitled “Continuity of Hankel potential involving Hankel translation on certain ultradifferentiable function spaces.”
(5) 11th International Conference of Numerical Analysis and Pure and Applied Mathematics ( ICNAAM 2013 ) during September 21-27, 2013, Rhodes, GREECE, and presented two papers (a) “Image encryption using TSRMSC associated with DWT” (b) “The continuous fractional wave packet transform.”
(6) Presented a paper on "An Optimal Method in Image Encryption" in the Special Section on Advances in Dirac Equations, Variational Inequalities, Sequence Spaces, and Optimization, II, organized by American Mathematical Society during September 23-24, 2017 at University of Central Florida, Orlando, USA.
(7) Presented a paper on "Two-stage hyper-chaotic system based image encryption in wavelet packet domain for wireless communication systems" in International Congress of Mathematicians (ICM) 2018 during August 01-09, 2018, in Rio de Janeiro, BRAZIL. This talk is highlighted in the ICM News. This visit was supported by both Open Arms Grants (ICM 2018) and BITS Pilani.
(8) Presented a paper on “A secure RGB image encryption algorithm in optimized virtual planet domain” in Indo-French Seminar on Optimization, Variational Analysis, and Applications during February 2-4, 2020, sponsored by the IFCPAR/CEFIPRA, at the Department of Mathematics, Institute of Science, Banaras Hindu University, Varanasi, India.
(9) Presented a paper through microsoft team on “A review on medical encryption techniques” in the 2nd International Conference on Machine Learning and Intelligent Systems (MLIS 2020) during October 25-28, 2020, Organized in Seoul, Korea.
(10) Presented a paper “A framework of linear canonical transforms on pseudo-differential operators and its application in engineering problems” in Contemporary Problems on Mechanics & Vibrations (CPMV) 2021 via online mode during May 20--22, 2021, organized by Department of Mathematics, BITS Pilani, Hyderabad Campus, India.
(11) Presented a paper "Pseudo-differential operators and localization operators on Sμν(R) space associated with linear canonical transform" in 13th ISAAC Congress, held from August 2 until August 6, 2021 in Ghent, Belgium.
(12) Presented a paper "A novel techinque for automated classification on coated tools" during December 22-23, 2022 in the 2nd International Conference on Mathematical Analysis and Computing (ICMAC-2022) organized by the Department of Mathematics, SSN College of Engineering, Kalavakkam, Chennai, Tamil Nadu, India.