↩ 🔵 🔵 🔵 ❪✺❫ Linear Concepts ○ ❪✺₁❫ Algebraic Classes ○ ❪✺₁𝑖❫⁺ Classes of Matrices ○️ ❪✺₁₍₀₎❫ Linear Class Corridors ○ Linear Transformation ○꠹ Matrix ○꠹ Null Space ○꠹ System of Linear Equations ○꠹ Vector ○꠹