banned-users

We all come into contact with many of these shapes every day. Here's what you can call them.

Tupper's self-referential formula is a formula that, when graphed in two dimensions at a specific location in the plane, can be "programmed" to visually reproduce the formula itself. It was defined by Jeff Tupper. It is used in various math and computer science courses as an exercise in graphing formulae. While it is called "self-referential", Tupper did not name it as such. The formula was published in his 2001 SIGGRAPH paper discussing methods related to the GrafEq formula-graphing program Tupper develope...