↩ 🔵 🔵 🔵 ❪✺₄❫ Quantum Sets ○ ❪✺_❫ Quantum Subs ○ ❪✺_ₛₛ❫ Mechanical Subsets ○ ❪◑❫ Bosons ○ ❪◑❫ Fermions ○