[1]School of Mathematical Sciences, Dalian University of Technology, Liaoning 116024, P. R. China [2]School of Mathematics and Statistics, Taishan College, Shandong 271021, P. R. China [3]School of Software, Dalian University of Technology, Liaoning 116620, P. R. China;
[1]School of Mathematical Sciences, Dalian University of Technology, Liaoning 116024, P. R. China [2]School of Mathematics and Statistics, Taishan College, Shandong 271021, P. R. China [3]School of Software, Dalian University of Technology, Liaoning 116620, P. R. China;
[1]School of Mathematical Sciences, Dalian University of Technology, Liaoning 116024, P. R. China [2]School of Mathematics and Statistics, Taishan College, Shandong 271021, P. R. China [3]School of Software, Dalian University of Technology, Liaoning 116620, P. R. China;
[1]School of Mathematical Sciences, Dalian University of Technology, Liaoning 116024, P. R. China [2]School of Mathematics and Statistics, Taishan College, Shandong 271021, P. R. China [3]School of Software, Dalian University of Technology, Liaoning 116620, P. R. China;
[1]School of Mathematical Sciences, Dalian University of Technology, Liaoning 116024, P. R. China [2]School of Mathematics and Statistics, Taishan College, Shandong 271021, P. R. China [3]School of Software, Dalian University of Technology, Liaoning 116620, P. R. China;