Symbol Reference: Stmt — Sequent Statement Sort (𝒞 ⊦ 𝛂)

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Formula Display:
Proof Trees:

Stmt \(\mathsf{Stmt}\) — Sequent Statement Sort (𝒞 ⊦ 𝛂)

Represents a hypothetical sequent judgment 𝒞 ⊦ 𝛂 pairing a finite context of assumption formulas 𝒞 : Ctx with a conclusion formula 𝛂 : Fm.

Field Mathematical & Kernel Specification (MKTD1 / MKTD2)
Symbol
Stmt
\(\mathsf{Stmt}\)
Category Metatheoretic AST Sorts
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 Syntactic Sort (Variant 1 Sequent Judgment)
Binder Status See Category & Signature above
Defining Kernel Entries (ML Labels) See Related Symbols & Kernel Entries below.
LaTeX Form \mathsf{Stmt}
How to Understand It

In the Variant 1 kernel (program/types/foundations.ML and newchecker.ML), theorems are proved about sequent statements of sort Stmt:

  • Written 𝒞 ⊦ 𝛂, where ⊦ is the syntactic consequence turnstile within a theory.
  • A theory 𝒯 : Theory proving a statement is written 𝒯 ⊢ (𝒞 ⊦ 𝛂) (Entries AxmSoundnessOfBaseTheory (3.72)–AxmBaseSubtheoryOfFull (3.75)).
Canonical Law / Usage 𝒯 ⊢ (𝒞 ⊦ 𝛂)
Related Symbols & Kernel Entries