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Deformations of exceptional Weierstrass points

Author: Steven Diaz
Journal: Proc. Amer. Math. Soc. 96 (1986), 7-10
MSC: Primary 14H15; Secondary 14F07, 32G15
MathSciNet review: 813798
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Abstract: Using first order deformation theory of pointed curves we show that the semigroup of a generic Weierstrass point whose semigroup has first nonzero element $ k$ consists only of multiples of $ k$ until after its greatest gap value, and that on the moduli space of curves two components of the divisor of points corresponding to curves possessing exceptional Weierstrass points intersect nontransversely.

References [Enhancements On Off] (What's this?)

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