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ExamplesFirst OrderNaturals are even or odd

Every natural number is either even or odd

Logoeven-or-odd.lf
nat : type. z : nat. s : {x:nat} nat. even : {N:nat} type. odd : {N:nat} type. even-z : even z. even-s : {N:nat}{O: odd N} even (s N). odd-s : {N:nat}{E: even N} odd (s N).
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