International Visits

Department of Mathematics, Mannheim University, Germany, July 21, 2025.
Department of Mathematics, Faculty of Science and Technology, University of Haute Alsace, France, June 18-19, 2025.
Karlsruhe Institute of Technology, IOR, Discrete Mathematics and Logistics, Germany, Sept. 3- Nov. 29, 2024 \& June 2-July 30, 2025 .
Faculty of Mathematics and Computer Science, Heidelberg University, Germany, October 31, 2024.
Department of Business and Data Science, University of Passau, Germany, November 13-15, 2024.
Department of Mathematics and Computer Science, Santa Clara University, USA, April 16-30, 2024.
Karlsruhe Institute of Technology (KIT), Institute of Operations Research (IOR), Karlsruhe, Germany (scientific meeting, June 15-17, 2023).
Department of Mathematics, Veer Surendra Sai University of Technology Siddhi Vihar, Burla, Odisha, India (scientific meeting, February 7-8, 2020).
P.G. Department of Mathematics Berhampur University Bhanja Bihar, Odisha, India (scientific meeting, February 4-5, 2020).
Department of Mathematics, South Asian University, New Delhi, India (scientific meeting, February 3, 2020).
Myanmar (scientific meeting, November 11-13, 2019).
Siksha ‘O’ Anushandhan University (Deemed to be University), Odisha, India (scientific meeting, October 23-26, 2019; February 6, 2020).
Institute for Mathematical Research (INSPEM), Universiti Putra Malaysia (UPM); Malaysia Institute of Transport, Universiti Teknologi MARA; Faculty of Computer Science and Mathematics, Universiti Teknologi MARA, August 31, 2019.
Tagbilaran, Bohol, Philippines (scientific meeting, 31 August-14 September 2019).
Faculty of Science, Technology and Communication, University of Luxembourg (June 23-25, 2019).
Shangrao Normal University, China (April 15-18, 2019).
Technical University Berlin, Germany, December 5-6, 2018.
School of Mathematics and Computational Science, Xiangtan University, China, July 24-26, 2018.
Peking University, Beijing China, Silkroad Mathematics Center, Series International Conferences (Modern Algebraic Geometry, July 22-27, 2018).
Swami Keshvanand Institute of Technology, Management & Gramothan, scientific meeting, Jaipur (INDIA), May 04-05, 2018.
Mathematical and System Sciences, Chinese Academy of Sciences (Silkroad Mathematics Center of Chinese Mathematical Society) (December 9-12, 2016; April 15-22, 2017; April 10-13, 2019), Beijing, China.
TU Bergakademie Freiberg, Germany, (October 24, 2016, November 2, 2017- January 29, 2018; September 15-December 12, 2018, 10-12 June, 2019; April 3-13, 2023; June 2- August 30, 2023).
Mindanao State University, Iligan-Mindanao, Philippines (scientific meeting), June 10-30, 2016.
Colombo, Sri Lanka (scientific meetings), 26-29, October, 2015; May 16-20, 2017.
New Delhi, India (DAAD Research Ambassadors Workshop) November 13-15, 2014.
University of Kaiserslautern, Germany (02-28 June, 2019, 02-28/06/2019, 25-27/09/2018, 01/06-30/06,2017, 15/10-14/11/2016, 1/7-31/12/2014; 1/1-30/6/2013; 1/4-30/9/2012; 19/92/10/2010; 1/9-30/09/2006; 1/10/1994-30/9/1996).
Kolaghat, India (scientific meeting), December 27-29, 2013.
University of Magdeburg, Germany (26-27 June, 2023; 1/5/2010-14/6/2010; 1/10/2006-30/11/2006; 1/10/1999-24/5/2002)
Chonbuk National University, South Korea, 11/06/2008 - 10/08/2008.
Memorial University of Newfoundland, Canada, 21/09/2004 -21/07/2005.
DIMACS, Center of Discrete Mathematics and Theoretical Computer Science, USA, June 2003.
IIT Bombay, India (scientific meeting), December 2002.
Goethe Institute Hannover, Germany, 01/08/1999 30/09/1999.
Aussois, France (scientific meeting), June 2001.
Goethe Institute Freiburg, Germany, 01/08/1994 30/09/1994.
Tokyo, Hiroshima, Oklahoma Japan, Japan (educational tour), 1989.
Other countries: Czech Republic (2018), Bahrain (2001).