PrintForm Definitions list 3 autom Sections AutomataTheory Doc

At: append segment 1 1 1 1 1 1 1 1 1 2
1. T: Type
2. as: T*
3. i: {0...||as||}
4. j: {i...||as||}
5. k: {j...||as||}
6. (Case of nth_tl(i;as); nil nil ; a.as' nil) = nil T*

ki ((Case of nth_tl(i;as); nil nil ; a.as' nil) @ firstn(-i+k;nth_tl(i;as))) = firstn(-i+k;nth_tl(i;as))
By:
RWH (HypC -1) 0
THEN
Reduce 0
Generated subgoal:

1 ki firstn(-i+k;nth_tl(i;as)) = firstn(-i+k;nth_tl(i;as))

About:
impliesequallistlist_indnil
addminusuniversenatural_number