Bipan Hazarika is a Professor at Department of Mathematics, Gauhati University, Guwahati, Assam. Earlier, he worked at Rajiv Gandhi University, Arunachal Pradesh, India from 2005 to 2017. He was Professor at Rajiv Gandhi University up to 2017. He received an M.Sc. and Ph.D. from Gauhati University, Guwahati, India. His main research areas are sequences spaces, summability theory, applications of fixed point theory, fuzzy analysis, and non-absolute integrable function spaces. He published more than 160 research articles in several renowned international journals. He is a regular reviewer of more than 50 different journals published by Springer, Elsevier, Taylorand Francis, Wiley, IOS Press, World Scientific, American Mathematical Society, IEEE, De Gruyter, etc. He published books on Differential Equations, Differential Calculus and Integral Calculus. Recently he edited the following books: “Sequence Spaces Theory and Applications, Chapman and Hall/CRC” and “Fixed Point Theory and Fractional Calculus: Recent Advances and Applications, Springer”. He is an editorial board member of more than 6 international journals and guest editor of a special issue named “Sequence spaces, Function spaces and Approximation Theory" of the Journal of Function Spaces.
Hemant Kumar Nashine is a professor at the VIT Bhopal University, Madhya Pradesh, India. As a Nehru–Fulbright fellow, he is a visiting professor at the University of Johannesburg, South Africa. He specializes in nonlinear functional analysis and its applications to differential and integral equations, and nonlinear matrix equations. He has more than 150 peer-reviewed publications to his credit, as well as the author of several chapters. He is an editor and a lead editor for a number of international publications, as well as a member of a number of mathematical societies.