Supported by the National Natural Science Foundation of China(Nos 71103179,71102129,10835005);Program for Young Innovative Research Team in China University of Political Science and Law,2010 Fund Project under the Ministry of Education of China for youth(10YJC630425);Generalized Virtual Economy Fund(GX2011-1019(Y)).
The purpose of this work is to study the principle fluctuation modes of the global stock market,which is regarded as a complex system.It is proposed that the systematic risk can be reflected by the trace calculated fr...