Euclid's Axioms, known as "Sky Drawing Technique" in Shenzhou, are logically verified and form a complete set of axioms.
Hilbert Space is an important extension of Euclidean Space and represents a type of mathematical linear inner product space that satisfies conditions of completeness.
In this virtual Phase Space, everything is different from the world at ordinary scales.
In Quantum Mechanics, the way to describe the changes of a quantum system over time is called 'Picture'.
