| | Who Cites hall? |
|
| hall | Def all == p:'a  .  x:'a. (p(x)) |
| | | Thm* 'a:S. all (('a  hbool)  hbool) |
|
| ball | Def  x:T. P(x) ==  ( x:T. P(x)) |
| | | Thm* T:Type, P:(T  ). ( x:T. P(x))  |
|
| tlambda | Def ( x:T. b(x))(x) == b(x) |
|
| assert | Def b == if b True else False fi |
| | | Thm* b: . b Prop |
|
| prop_to_bool | Def  P == InjCase(lem(P) ; true ; false ) |
| | | Thm* P:Prop. ( P)  |