It comes forth pecial categories (xiang) which include time, change and antagonism. accordingly , it is our mission how we express changing world in the form of mathematical words.

• 基于这样的认识，如何在精确、严密的"不变、确定的思维"之中保持"变易、交易的、存在着的世界的"思想已成为我们必须面临与承担的使命。