- STRUCTURE
 
- SYNOPSIS
 
Returns the theorem just proved using the subgoal package.
 
- DESCRIPTION
 
The function top_thm is part of the subgoal package. A proof state of the
package consists of either  goal and justification stacks if a proof is in
progress or a theorem if a proof has just been completed. If the proof state
consists of a theorem, top_thm returns that theorem. For a description of the
subgoal package, see set_goal.
 
- FAILURE
 
top_thm will fail if the proof state does not hold a theorem. This will be
so either because no goal has been set or because a proof is in progress with
unproven subgoals.
 
- USES
 
Accessing the result of an interactive proof session with the subgoal package.
 
- SEEALSO
 
set_goal,
restart,
backup,
restore,
save,
set_backup,
expand,
expandf,
p,
top_thm,
top_goal