A form of any given polyhedron distorted so every edge is tangent to the unit sphere and the center of gravity of the tangent points is the origin. See the canonical form page.

Generally, in mathematics, a canonical form is a function that is written in the most standard, conventional, and logical way. For example, polynomials are usually written with the terms in descending powers: it is more usual to write x2 + x + 30 than x + 30 + x2, although the two forms are essentially equivalent.

In a Boolean algebra, a Boolean function that is composed of standard logical operators can be expressed in a canonical form using the dual concepts of minterms and maxterms. All logical functions are expressible in canonical form, both as a "sum of minterms" and as a "product of maxterms". This allows for greater analysis into the simplification of these functions, which is of great importance in the minimization of digital circuits.