the National Natural Science Foundation of China (10471084, 10171043)
Some properties of semi-continuous functions are investigated, and some characterizations of semi-stratifiable spaces with semi-continuous functions are given.
For a topological space X we denote by CL(X) the collection of all nonempty closed subsets of X. Suppose we have a map T which assigns in some coherent way to every topological space X some topology T(X) on CL(X). In ...
the National Natural Science Foundation of China (Grant No.10171043)
In this note we first prove a fixed point theorem in H-spaces which unities and extends the corresponding results in [6] and [9]. Then, by applying the fixed point theorem, we prove an existence theorem of an equilib...
The projects supported by NNSF of China(10171043 and 19971048)
In pattern analysis and image management, the information of an objective image can be recovered from a sequence approximate images. In mathematical form of expression it is needed to consider some types of continuity...