Science of Being （存在之科学） — The science whose core operator is BE, studying well-founded beings; the degenerate projection of the science of generation as ι→1
Dao （道） — The unnamed whole prior to differentiation; a generative operation, not a being; cannot be axiomatized, only operationalized
boundary postulate （分界基设） — A foundational proposition about the BE side / degenerate projection; not an internal axiom
proper class (project sense) （固有类） — A circular, self-embedding structure presupposing itself, excluded by the Axiom of Foundation; its mathematical home is νF
mutual arising （互生） — Two poles emerge simultaneously in one differentiation event and define each other; A=S(S(A))
Shēng （生） — The iterative operator of qualitative change and emergence, Xₙ₊₁=S(Xₙ), required to yield finite cycles
Science of Generation （生之科学） — The science whose core operator is Shēng (generation), studying proper classes, i.e. generation itself
rotor （旋机） — A self-sustaining cycle containing a method of distinction that establishes invariant relations among the distinguished; the basic category of the science of generation