文[1]给出一个求线性规划问题可行基的方法,文[2]指出其判定条件(3)有误,然而所用的反例并不正确。本文给出三个正确的反例;此外,还给出反例表明文[1]的判定条件(2)也不正确的。
[ 1 ] described a method for obtaining a feasible basis. Then[2 ] indicated incorrectness of its condition (3), but with incorrect counterexamples. This note gives three valid counterexamples to(3), and further shows the incorrectness of condition(2).