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math.AG2022
Hyperelliptic curves and Ulrich sheaves on the complete intersection of two quadrics
David Eisenbud, Frank-Olaf Schreyer
Using the connection between hyperelliptic curves, Clifford algebras, and complete intersections of two quadrics, we describe Ulrich bundles on and construct some of minima…
math.AG2022
Marked Godeaux surfaces with special bicanonical fibers
Frank-Olaf Schreyer, Isabel Stenger
In this paper we study marked numerical Godeaux surfaces with special bicanonical fibers. Based on our construction method of marked Godeaux surfaces we give a complete characteriz…