is_exists : term -> bool
STRUCTURE
boolSyntax
SYNOPSIS
Tests a term to see if it is an existential quantification.
DESCRIPTION
If
M
has the form
?v. t
then
is_exists M
returns
true
. If the term is not an existential quantification the result is
false
.
FAILURE
Never fails.
SEEALSO
mk_exists
,
dest_exists
HOL
Kananaskis-13