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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