C.20:11 - E.24.UK settlement

U.Discipline is the admitted durable holon kind for one exact field-level practice-and-knowledge whole. C.20 supplies the kind-specific construction criterion; A.1 recognizes one exact candidate under that admitted kind only after the candidate, constituents, obtaining constructive relations, assembly, identity or reidentification rule, composition-grounded whole characteristic, and larger-assembly compatibility are recoverable.

The kind is not established by a field name, subject domain, curriculum, department, professional body, journal, bibliography, standards folder, method family, bridge set, comparison policy, publication set, selected relation structure, or count of local viewpoints. A discipline is not a U.System or U.Episteme by default. A system, episteme, method, work occurrence, publication occurrence, bridge, comparison, and selected U.Structure retain their own identities even when they are used in work concerning a discipline.

C.20 directly governs the narrow DisciplinePartOfRelation and the complete discipline-construction test. It does not introduce separate public U-kinds for applied discipline, transdiscipline, tradition, or lineage. Applied, multidisciplinary, transdisciplinary, tradition, lineage, school, and edition wording remains useful only as a separately governed classification, historical claim, or description whose exact criterion is stated.