超度量空间 Ultrametric space
（重定向自Ultrametric inequality）
超度量空间是一种特殊的度量空间，其中三角不等式用d(x, z) ≤ max{d(x, y), d(y, z)}来代替。有时相关的度量也称为非阿基米德度量或超度量。虽然超度量空间中的一些定理看来奇怪，它们在许多应用中都自然出现。
Ultrametric inequality
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Ultrametric space 超度量空间
（重定向自Ultrametric inequality）
In mathematics, an ultrametric space is a special kind of metric space in which the triangle inequality is replaced with ![d(x,z)\leq\max\left\{d(x,y),d(y,z)\right\}](/Images/godic/202502/18/5134deb3fb909554f944c4ce10a746a55626.png")
. Sometimes the associated metric is also called a non-Archimedean metric or super-metric. Although some of the theorems for ultrametric spaces may seem strange at a first glance, they appear naturally in many applications.
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