File: check_valid.doc

package info (click to toggle)
hol88 2.02.19940316dfsg-5
  • links: PTS
  • area: main
  • in suites: bookworm
  • size: 65,816 kB
  • sloc: ml: 199,939; ansic: 9,666; sh: 6,913; makefile: 6,032; lisp: 2,747; yacc: 894; sed: 201; cpp: 87; awk: 5
file content (21 lines) | stat: -rw-r--r-- 598 bytes parent folder | download | duplicates (11) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
 
\DOC check_valid

\TYPE {check_valid : (goal -> subgoals -> bool)}

\SYNOPSIS
Checks whether a prospective proof is valid.

\DESCRIBE
{check_valid (A,t) ([A1,t1;...;An,tn],prf)} checks whether the applying the
proof {prf} to the list of theorems {[(A1 |- t1);...;(An |- tn)]} would produce
a theorem alpha-equivalent to {A |- t}. This check is done by creating this
list of theorems using {chktac} and then applying the proof {prf}.

\FAILURE
Never fails, unless the proof {prf} fails or the assignable variable {chktac}
has been rebound to a function that fails.

\SEEALSO
chktac, VALID.

\ENDDOC