10 lines
277 B
Text
10 lines
277 B
Text
inductive tree.{u} (A : Type.{u}) : Type.{max u 1} :=
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node : A → forest.{u} A → tree.{u} A
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with forest : Type.{max u 1} :=
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nil : forest.{u} A,
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cons : tree.{u} A → forest.{u} A → forest.{u} A
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check tree.{1}
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check forest.{1}
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check tree.rec.{1 1}
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check forest.rec.{1 1}
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