基金supported by National Natural Science Foundation of China(11271090)NSF of Guangdong Province(2016A030310257,2015A030313346)Foundation for Young Talents in Educational Commission of Guangdong Province(2015KQNCX116)
基金supported by the Visiting Scholar Program of Department of Mathematics and Statistics at Curtin University of Technology,the support with the NSF of China(11271090)NSF of Guangdong Province(2015A030313346S2012010010121)