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The Residual Intersection Formula of Type II Exceptional Curves

Ai-Ko Liu
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Abstract

The paper is a part of our program to build up a theory of couting immersed nodal curve on algebraic surfaces, as an enumerative Riemann-Roch theory (outlined in math.AG/0405113). In this paper, we discuss the excess intersection theory of the so-called type two exceptional curves, which plays the analogous role as the "index of speciality" (h^2) in the classical surface Riemann-Roch formula. We show that the algebraic family Seiberg-Witten theory of type I exceptional curves can be generalized to the theory of type II exceptional curves when the family moduli spaces are not regular of the expected dimension.

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Ai-Ko Liu. 2004-09-02. The Residual Intersection Formula of Type II Exceptional Curves. https://arxiv.org/abs/math/0409037

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