Algebraic Surfaces with Many Nodes
An algebraic surface is defined as the set of points that satisfy a polynomial equation . An ordinary double point (or node) is a point where the surface intersects itself and satisfies . The maximum possible number of nodes is a function of the degree of .
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 Mathematisches Forschungsinstitut Oberwolfach. "IMAGINARY—Open Mathematics." (Sep 17, 2013) imaginary.org.