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At: upto wf 1

d,i,j:. j-i = d upto(i;j) {i..j} List

By:
InductionOnNat
THEN
RecUnfold `upto` 0
THEN
SplitOnConclITE


Generated subgoal:

11. d:
2. 0 < d
3. i,j:. j-i = d-1 upto(i;j) {i..j} List
4. i:
5. j:
6. j-i = d
7. i < j
upto(i+1;j) {i..j} List
2 steps

About:
listintnatural_numberaddsubtractequalmemberimpliesall

(7steps total) PrintForm Definitions graph 1 1 Sections Graphs Doc