[] \([\,]\) — Empty Hypothesis Context / Empty Class List Constant ([])
Denotes the empty hypothesis context [] : Ctx in sequent judgments (𝘞, [] ⊢ 𝛗) or the empty Dunaev class list [] = ∅.
| Field | Mathematical & Kernel Specification (MKTD1 / MKTD2) |
|---|---|
| Symbol |
[]
\([\,]\)
|
| Category | Metatheoretic & Structural Constant |
| SML AST Constructor | Kernel AST Symbol / Sort Constructor in typetheory.ML (Class_p / Truth_p / EXP / UCol) |
| Constructor Arguments | Typed arguments as specified by the Signature / Sort field above |
| Metatype / Signature | Ctx | Class |
| Binder Status | See Category & Signature above |
| Defining Kernel Entries (ML Labels) | See Related Symbols & Kernel Entries below. |
| LaTeX Form | [\,] |
| How to Understand It | SML AST Constructor: |
| Canonical Law / Usage | (𝘍, [] ⊢ 𝛙) → ⟦𝛙⟧ |
| Related Symbols & Kernel Entries |