基金supported by grants from The National Natural Science Foundation of China(60873146,60973092,60903097,61172183)Hi-Tech Research and Development Program of China(2009AA02Z307)+3 种基金Project of Science and Technology Innovation Platform of Computing and Software Science(985 Engineering)The Key Laboratory for Symbol Computation and Knowledge Engineering of the National Education Ministry of ChinaGraduate Innovation Fund of Jilin University(20111062)Natural Science Foundation of Jilin Province(20101503)~~
