可以复制并粘贴升序列中的表达式，然后只需把条件中的值由正数改为负数。

You can copy and paste the expression from the ASC column, and only have to replace the values in the conditions from positive to negative.

youdao

对于邓氏灰靶变换，证明了在序列取值于正数范围内时可以作为极大值极性和极小值极性指标列的灰靶变换；

As to the Deng's transformation, it is proved to be suitable for POL(max) and POL(min) criterion sequence when taking positive value;

youdao

So the integers are totally ordered the reals are totally ordered lots of things are, the rationals are totally ordered.

对正数来说,这样的序列是排好序的,对实数也是如此,对很多事情都是如此。

麻省理工公开课 - 计算机科学及编程导论课程节选