== {i:| i 
0 } 
Type
== {i:| 0
i } Type
x,n. n+f(x))
n:, f:(n
). sum(f(x) | x < n) | Some definitions of interest. | |
| int_nzero | Def == {i:| i 0 } |
| Thm* Type | |
| nat | Def == {i:| 0i } |
| Thm* Type | |
| sum | Def sum(f(x) | x < k) == primrec(k;0;x,n. n+f(x)) |
| Thm* n:, f:(n). sum(f(x) | x < n) |
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