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Who Cites hres exists?
hres_existsDef res_exists == P:'aQ:'ares_exists('a;x.(P(x));x.(Q(x)))
Thm* 'a:S. res_exists  (('a  hbool)  ('a  hbool)  hbool)
assertDef b == if b True else False fi
Thm* b:b  Prop
res_existsDef res_exists('a;x.P(x);x.Q(x)) == x:'aP(x) & Q(x)
Thm* 'a:Type, P,Q:('aProp). res_exists('a;x.P(x);x.Q(x))  Prop
prop_to_boolDef P == InjCase(lem(P) ; true; false)
Thm* P:Prop. (P 
tlambdaDef (x:Tb(x))(x) == b(x)

Syntax:res_exists has structure: hres_exists('a)

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boolbfalsebtrueifthenelseassertdecideapply
functionuniversememberpropandfalsetrueallexists
!abstraction
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WhoCites Definitions HOLlib Sections NuprlLIB Doc