a,b:
. (a -- b) 
b
b else a fia,b:. imax(a;b) j == 
j < ii,j:. ij 
j == if i < j true ; false fii,j:. i < j b == if b false else true fib:. b | Who Cites ndiff? | |
| ndiff | Def a -- b == imax(a-b;0) |
| Thm* a,b:. (a -- b) | |
| imax |
Def imax(a;b) == if ab b else a fi |
| Thm* a,b:. imax(a;b) | |
| le_int |
Def ij == j < i |
| Thm* i,j:. ij | |
| lt_int |
Def i < j == if i < j true ; false fi |
| Thm* i,j:. i < j | |
| bnot |
Def b == if b false else true fi |
| Thm* b:. b |
| Syntax: | a -- b | has structure: | ndiff(a; b) |
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