For intervals in the space there are two representation variants, for proper intervals and for singleton intervals.
For a singleton interval, where a single value is represented in brackets or with the radius given as
separated by a comma. Examples include [(8,4),0], [(8,4)].
For normal intervals, the complex number and it’s radius are given in backets separated by a comma. Examples
include [(8,4),12.2], [(8,4),5].