| Institution: | 1. Department of Mathematics, Faculty of Science, Kunming University of Science and Technology, Kunming, Yunnan 650500, People’s Republic of China;2. Department of Economics, Faculty of Economics, Administrative and Social Sciences, Hasan Kalyoncu University, Gaziantep TR-27410, Turkey;3. Department of Mathematics and Statistics, University of Victoria, Victoria, British Columbia V8W 3R4, Canada;4. Department of Mathematics, Faculty of Science and Arts, University of Gaziantep, Gaziantep TR-27310, Turkey;1. School of Mathematics and Statistics, Beijing Institute of Technology, Beijing 100081, PR China;2. School of Mathematics, University of the Witwatersrand, Johannesburg Wits 2050, South Africa;3. Department of Mathematics, University of British Columbia, Vancouver V6T 1Z2, Canada;4. Department of Mathematics, Howard University, Washington, DC 20059, USA;5. Department of Mathematical Sciences, Delaware State University, Dover, DE 19901-2277, USA;6. Department of Mathematics, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia;7. Department of Mathematics, Faculty of Science and Horticulture, Kwantlen Polytechnic University, Surrey, BC V3W 2MB, Canada |
