06.4 Decomposition and Composition
6.4 Decomposition and Composition Decomposition and composition are inverse patterns. Decomposition breaks a complex object into simpler parts. Composition builds a complex object from simpler parts. Much of mathematics moves between these two directions. Decomposition is useful because large objects are often hard to understand directly. A problem becomes easier when its pieces can be studied separately. Composition is useful because it explains how local or partial information forms a...