On codimension two subvarieties of P6
classification
🧮 math.AG
keywords
codimensioncompleteintersectionliessmooththenfollowinghyperquartic
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We prove the following: (a) Let X be a smooth, codimension two subvariety of P6. If X lies on a hyperquintic or if deg(X)<74, then X is a complete intersection. (b) Let X be a smooth, subcanonical threefold in P5. If X lies on a hyperquartic, then X is a complete intersection.
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