The Complementary Rules

The rules derived from the combination of a single variable with the inverse of itself are known as the complementary rules (Figure 10.33).

Figure 10.33 The complementary rules

10.21 The Involution Rules

The involution rule states that an even number of inversions cancel each other out; for example, two NOT functions connected in series generate an identical result to that of a BUF function (Figure 10.34).

Figure 10.34 The involution rules