1 Table of Contents: “...Introduction -- Discrete structures : a common framework -- Graphs and directed graphs -- Preorders...”

2 Table of Contents: “... for the Second Time -- Rooted Ordered Binary Trees, Pattern Avoidance, and Data Structures -- Staircases...”

3 Table of Contents: “... -- Conclusion -- Visualizing Algebraic Structure -- Algebra of Complex Numbers -- Quaternion Algebra...”

4 “... text focuses on vector spaces and the maps between them that preserve their structure (linear...”

5 “...-dimensional) concept. The book does not employ a theorem/proof structure, and it spends very little time...”

6