Registry · Theorem II.T42 established formalized

II.T42 — Categoricity

Any fibered product with an ABCD chart satisfying axioms K0-K5 is canonically isomorphic to tau^3, with the isomorphism unique and structure-preserving.

Book II Part 9 Ch. 52

Dependency Graph

Depends on (4)

I.T05 II.T40 II.D60 II.T33

Depended on by (10)

II.C02 II.D61 II.D76 II.R31 II.T47 II.D90 II.D91 II.T56 II.R40 II.R41

Lean Formalization

Module: TauLib.BookII.CentralTheorem.Categoricity

Symbol: Tau.BookII.CentralTheorem.categoricity_check