b == if b
True else False fi
b:
. b 
Prop
y == 
(x = y T)T:Type, x,y:T. (x = y) 
b == if b false else true fib:. b 
Q == (P 
Q) & (P Q)A,B:Prop. (A B) PropA == A FalseA:Prop. (A) Prop| 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) | |
| bnot | b == if b false else true fi |
| b:. b | |
| iff | Q == (P Q) & (P Q) |
| A,B:Prop. (A B) Prop | |
| not | A == A False |
| A:Prop. (A) Prop |
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