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At: int lower ind 1

1. i:
2. E: {...i}Prop
3. E(i)
4. k:{...i-1}. E(k+1) E(k)

k:{...i}. E(k)

By: BackThruLemmaWithUnfolds Thm* n:. WellFnd{i}({...n};x,y.x > y) [`wellfounded`]

Generated subgoal:

1 j:{...i}. (k:{...i}. k > j E(k)) E(j)


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intnatural_numberaddsubtractfunctionpropimpliesall

(6steps) PrintForm Definitions Lemmas int 2 Sections StandardLIB Doc