Each concept here is mapped to its prerequisites — the ideas you'd need first to understand it — all the way down to four foundations: Space, Time, Energy, Pattern. Click any prerequisite to drill down, or scroll for the chain graph.
The center emerges as the point of convergence for multiple positions, where all points on the perimeter are equidistant, serving as a reference for orientation and measurement within a bounded space.
External reference — all senses of the word “center” on Wiktionary. This atlas concept maps to only the slice of meaning relevant to the prerequisite graph.