NSFs of ChinaNational Natural Science Foundation of China (NSFC) [11571049]; Construct Program of the Key Discipline in Hunan Province; Science and Technology Plan Project of Hunan Province [2016TP1020]; Open fund project of Hunan Provincial Key Laboratory of Intelligent Information Processing and Application for Hengyang Normal University [2018IIPAYB04]; Science and Technology Plan Project of Hengyang City [2017KJ183]; Mathematical Research Impact Centric Support (MATRICS) Grant [MTR/2017/000367]; Science and Engineering Research Board (SERB), Department of Science and Technology (DST), Government of India