That portion of a region lying "outside" a specified boundary.
Exterior
See also
InteriorExplore with Wolfram|Alpha
Cite this as:
Weisstein, Eric W. "Exterior." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/Exterior.html
That portion of a region lying "outside" a specified boundary.
Weisstein, Eric W. "Exterior." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/Exterior.html