Step
*
of Lemma
seg_sum_shift
p,q:
.
L:
List. (seg_sum(p;q;L) = seg_sum(p - 1;q - 1;tl(L)))
BY
{ RepeatFor 3 ((D 0 THENA Auto)) }
1
1. p : 
@i
2. q : 
@i
3. L :
List@i
seg_sum(p;q;L) = seg_sum(p - 1;q - 1;tl(L))
Latex:
\mforall{}p,q:\mBbbN{}\msupplus{}. \mforall{}L:\mBbbZ{} List. (seg\_sum(p;q;L) = seg\_sum(p - 1;q - 1;tl(L)))
By
RepeatFor 3 ((D 0 THENA Auto))
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