Theory of General Certificate Transition (GCT) Admissibility Before Geometry

Existing physical theories begin inside a pre–given descriptive space: Newton inside Euclideanspace, Einstein inside spacetime geometry, and quantum theory inside Hilbert space. In allcases the carrier of description is assumed to already exist. The present work addresses adeeper structural question: how does such a space become admissible in the first place?We introduce the General Certificate Transition (GCT), a primitive admissibility mech-anism that acts as a structural permission gate. GCT does not represent motion, force, ordynamics; instead it certifies which configurations are allowed to exist. Geometry, Hilbertstructure, probability, and physical observables arise only after this certification.This establishes a feasibility–first foundation for physics:Disconnected Zone ⇒ Certification (GCT) ⇒ Geometry/Representation ⇒ Physics.Thus admissibility precedes geometry, and geometry precedes dynamics.