主平方根函数是使用非正实轴作为分支切割定义的。

The principal square root function is defined using the nonpositive real axis as a branch cut.

youdao

请考虑清单1所示的平方根函数的原型。

Consider the prototype for a simple square root function shown in Listing 1.

youdao

然后我将一个新的集合附加至由factor列表中的map函数生成的factor上，应用此代码生成对称的(平方根上方匹配的因子)列表。

I then append a new collection onto factors - generated by the map function on the factors list - applying the code to generate the symmetrical (the matching factor above the square root) list.

youdao

In some sense, strictly speaking they shouldn't be necessary because the fact that my specification starts with an assumption, says, hey you, who might call square root make sure that the things you call me with obey the assumption.

在某种意义上严格的来讲,它们不是必要的,因为我已经对假设做了声明,也就是说，如果你要调用我的，求平方根的函数,请确保你传递给我的,参数满足假设条件。

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