7 lines
552 B
Text
7 lines
552 B
Text
module
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example : (List.range' 1 n).drop (List.range' 1 n).length = [] := by grind -- solves
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example : [].sum = 0 := by grind -- solves
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example : ((List.range' 1 n).drop (List.range' 1 n).length).sum = 0 := by grind -- solves
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example : ((List.range' 1 n).take (List.range' 1 n).length).sum = (List.range' 1 n).sum := by grind -- solves
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example (as bs : List Nat) : ((as ++ bs).take (as ++ bs).length).sum = (as ++ bs).sum := by grind -- solves
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example (as bs : List Nat) : ((as ++ bs).take (as ++ bs).length).sum = bs.sum + as.sum := by grind -- solves
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