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math.AG2017★ 1 cited
Categorical characterization of quadrics
Duo Li
We give a characterization of smooth quadrics in terms of the existence of full exceptional collections of certain type, which generalizes a result of C.Vial for projective spaces.
math.AG2017
On certain K-equivalent birational maps
Duo Li
We study K-equivalent birational maps which are resolved by a single blowup. Examples of such maps include standard flops and twisted Mukai flops. We give a criterion for such maps…