is_exists1 : term -> bool
STRUCTURE
boolSyntax
SYNOPSIS
Tests a term to see if it is a unique existence term.
DESCRIPTION
If
M
has the form
?!v. t
then
is_exists1 M
returns
true
. If the term is not a unique existence quantification the result is
false
.
FAILURE
Never fails.
SEEALSO
mk_exists1
,
dest_exists
HOL
Kananaskis-14