Connections [of substitution systems] with square roots

Substitution systems such as (c) above are related to projections of lines with quadratic irrational slopes, as discussed on page 904.

Connections [of substitution systems] with square roots

Substitution systems such as (c) above are related to projections of lines with quadratic irrational slopes, as discussed on page 904.

From Stephen Wolfram: *A New Kind of Science* [citation]