一致连续 Uniform continuity
(重定向自Uniformly continuous function)
一致连续性描述定义在一定度量空间上的函数的性质。与连续性刻画函数在局部的性质不同,一致连续刻画的是函数的整体性质。一致连续是比连续更苛刻的条件。一个函数在某度量空间上一致连续,则其在此度量空间上必然连续,但反之未必成立。直观上,一致连续可以理解为,当自变量x在足够小的范围内变动时,函数值y的变动也会被限制在足够小的范围内。
单词 | Uniformly continuous function |
释义 |
Uniformly continuous function
中文百科
一致连续 Uniform continuity(重定向自Uniformly continuous function)
一致连续性描述定义在一定度量空间上的函数的性质。与连续性刻画函数在局部的性质不同,一致连续刻画的是函数的整体性质。一致连续是比连续更苛刻的条件。一个函数在某度量空间上一致连续,则其在此度量空间上必然连续,但反之未必成立。直观上,一致连续可以理解为,当自变量x在足够小的范围内变动时,函数值y的变动也会被限制在足够小的范围内。
英语百科
Uniform continuity 一致连续(重定向自Uniformly continuous function)
In mathematics, a function f is uniformly continuous if, roughly speaking, it is possible to guarantee that f(x) and f(y) be as close to each other as we please by requiring only that x and y are sufficiently close to each other; unlike ordinary continuity, the maximum distance between f(x) and f(y) cannot depend on x and y themselves. For instance, any isometry (distance-preserving map) between metric spaces is uniformly continuous. |
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