T:S. arb(T) 
T
q == if p
q else false fip,q:
. (pq) 
y == 
(x = y T)T:Type, x,y:T. (x = y) 
b == if b false else true fib:. b A == A 
FalseA:Prop. (A) Prop
x:T. True } Type{2}
x:T. b(x))(x) == b(x)| Some definitions of interest. | |
| arb | |
| T:S. arb(T) T | |
| band | q == if p q else false fi |
| p,q:. (pq) | |
| bequal | y == (x = y T) |
| T:Type, x,y:T. (x = y) | |
| bnot | b == if b false else true fi |
| b:. b | |
| not | A == A False |
| A:Prop. (A) Prop | |
| stype | x:T. True } |
| Type{2} | |
| tlambda | x:T. b(x))(x) == b(x) |
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