Moser polygon notation

In mathematics, Moser's polygon notation is a means of expressing certain large numbers. It is the obvious extension of Steinhaus polygon notation, ie., n written in an (m+1)-gon means "n in n m-gons".

means nⁿ

means "n in n triangles"

means "n in n squares"

etc.

Moser's number is "2 in a Megagon", using Steinhaus' Mega.

In more formal notation, let

Then Mega =  and Moser = 

See also

• Conway chained arrow
• Knuths up-arrow notation

External

• Factoid on Big Numbers
• Robert Munafo's Big Numbers, which hints Steinhaus and Moser came up with this notation jointly in the '70s