In this paper, we study the definition of semicontinuous function and the sufficient conditions of semi continuity, obtain some properties of semicontinuous function.
给出了半连续函数的定义,研究了函数具有半连续性的条件,推出了半连续函数的一些性质。
2
The reliability of mining technological systems has a notable impact on main economic and technical indices. especially when continuous or semi-continuous mining system is employed.