On the Intersection of Two Plane Curves
Xi Chen
Abstract
We study the following question: fix a sufficient general curve D of degree d in P2, what is the least number of intersections between D and an irreducible curve of degree m? G. Xu proved this number i(d, m) is at least d - 2 for all m. This problem can be regarded as the algebraic part of Kobayashi conjecture on the hyperbolicity of P2 D. We first improved Xu's bound with m fixed and then generalized his result to rational ruled surfaces.
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