A surface parallel to the mean spheroid of the earth is called a level surface and the line drawn on the level surface is known as a level line.
On the other hand an interface can be represented implicitly as a level surface of a function, and this idea gives rise to the so-called level set method.
在數學領域中, 一個具有n變量的實值函數f的水平集是具有以下形式的集合. { (x1,,xn) | f(x1,,xn) = c }. 其中c 是常數. 即, 使得函數值具有給定常數的變量集合.
flat surface. Synonyms for level surface
A level set of a function of three variables f(x,y,z) is a surface in three-dimensional space, called a level surface. Level curves. One way to collapse the
We define the level surface of U( x,y,z) of level k to be the set of all points in R 3 which are solutions to U( x,y,z) = k.