Describe symbolism in A Beginner's Guide to Constructing the Universe: Mathematical Archetypes of Nature, Art, and Science by Michael S. Schneider

There isn't a lot of symbolism in this non-fiction title. You might consider the Borromean Rings. The "three becomes one" concept can be studied through the sign known as the Borromean Rings. It was based on the family crest of the Borromeo family of Italy which illustrates that although the rings in the crest intersect, they all remain independent entities.