isocline

abstraction

Definition: A contour line (also isoline, isopleth, or isarithm) of a function of two variables is a curve along which the function has a constant value, so that the curve joins points of equal value. It is a plane section of the three-dimensional graph of the function

Source: Wikipedia

Wikipedia Page (Something wrong with this association? Let us know.)

Wikidata Page (Something wrong with this association? Let us know.)