本文证明了IF-环的弱维数等于0或∞;即当一个环的弱维数有限时,IF-环等价于VN正则环。从而得到了:弱维数有限的环是双边凝聚的,如......

In [1], Saroj Jain Posed an open Problem: Is a right IF-ring left coherent? In this note, we discuss this problem and Pr......