L:T List, i,j,x:
||L||. swap(L;i;j)[x] = L[((i, j)(x))]L:T List, f:(||L||
||L||), i:||L||. (L o f)[i] = L[(f(i))]| Rank | Theorem | Name |
| 4 | L:T List, i,j,x:||L||. swap(L;i;j)[x] = L[((i, j)(x))] | [swap_select] |
| cites the following: | ||
| 3 | L:T List, f:(||L||||L||), i:||L||. (L o f)[i] = L[(f(i))] | [permute_list_select] |