1. Department of Mathematics, Statistics and Computer Science, University of Illinois at Chicago, Chicago, IL 60607-7045, USA
2. Department of Applied Mathematics, The Hong Kong Polytechnic University, Hong Kong, China
3. School of Mathematical Sciences, Fudan University and Shanghai Key Laboratory of Contemporary Applied Mathematics, Fudan University, Shanghai 200433, China
4. School of Mathematical Sciences and LPMC, Nankai University, Tianjin 300071, China
Received date: 25 Sep 2017
Published date: 27 Nov 2017
Copyright
2017 Higher Education Press and Springer-Verlag GmbH Germany