The collective existence is the primitive form and a common state,which is of basic significance for human beings\' exsitence;the social existence is based on labor,which provides material conditions for human beings\' comprehensive existence.

Various individuals who share the same or similar sense of truth form a potential group,and literature is one of the approaches to turn this potential group which unites different individuals into a distinct group.

Various individuals who share the same or similar sense of truth form a potential group,and literature is one of the approaches to turn this potential group which unites different individuals into a distinct group.

Global Existence and Blow-up of Solution to a Nonlocal Parabolic System;

By comparison the theorem and the upper-lower solution method, the sufficient condition for the finite time bow-up and global existence of solution are established.

By comparison theorem and the upper-lower solution method,the conditions for the global existence and the finite time blow-up of solution to the system are established.

In his opinion,dialectics of the concrete criticizes the living conditions of human caused by capitalist mode of production,that is,dominated by "abstract",and it reveals the real way that people surmount "abstract" and realize "existence of the concrete",i.