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Library / First Principles Framework (FPF) - Core Conceptual Specification
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Source changed 2026-10-03 11:52:20 UTC · snapshot created 2026-10-03 11:53:41 UTC · last check 2026-10-03 12:05:13 UTC

E.10:7.1 - LEX.TokenClass (meta‑lexical; not a USM Scope)

Definition. LEX.TokenClass : NameToken → {KernelToken | ContextToken | DiscriminatorToken}. This is a local lexical classification function on NameTokens with the closed value set {KernelToken | ContextToken | DiscriminatorToken}, used by the LEX registry and MG-DA checks. It is not thereby a U.Characteristic or a CharacteristicSpace; that CHR reading would require a separately named U.Characteristic with one declared CSLC scale. It is not a USM scope and carries no truth or validity semantics.