👉 In a mathematical context, an "isopleth" refers to a set of points in space that are considered equally important or significant based on their proximity to a certain value. A typical example would be the middle of a circle with its center at 0 and radius 1 (the isopleth), which means that any point within this isopleth will have an influence equal to the other points in the set. For example, consider a rectangular region where each side has a length of
