fetch

DB.fetch : string -> string -> thm

Fetch a theorem by theory and name.

An invocation fetch thy name searches through the currently loaded theory segments in an attempt to find a theorem, axiom, or definition stored under name in theory thy.

Failure

If the specified theorem, axiom, or definition cannot be located.

Example

> DB.fetch "bool" "NOT_FORALL_THM";
val it = ⊢ ∀P. ¬(∀x. P x) ⇔ ∃x. ¬P x: thm

See also

DB.thms, DB.thy, DB.theorems, DB.axioms, DB.definitions