The transexpansion numeral unit (TNU) was invented in 1985 by GX Jupitter-Larsen to explore the distance & separateness in between linear counting locations that don’t neighbour each other. When arranged in order, the TNUs form a spiral around the standard linear numbers. If one assumes that each individual linear number is a particular location along a counting order, then each individual TNU would be the distance between two selected linear number locations. Where the TNUs have been placed is unimportant. What is important is that anyone can make up their own personal numbers to symbolize any numeral interrelationship that Jupitter-Larsen’s don’t. Instead of a way of doing arithmetic, what you end up with here is an emotional & philosophical barometer. - jupitter-larsen.com/tnu.html