b == if b
True else False fi
b:
. b 
Prop
y == 
(x = y T)T:Type, x,y:T. (x = y) 
q == 
p 
qp,q:. pq b == if b false else true fib:. b A == A FalseA:Prop. (A) Prop
x:T. b(x))(x) == b(x)| Some definitions of interest. | |
| assert | b == if b True else False fi |
| b:. b Prop | |
| bequal | y == (x = y T) |
| T:Type, x,y:T. (x = y) | |
| bimplies | q == p q |
| p,q:. pq | |
| bnot | b == if b false else true fi |
| b:. b | |
| not | A == A False |
| A:Prop. (A) Prop | |
| tlambda | x:T. b(x))(x) == b(x) |
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