Kodai Mathematical Journal

On Perez Del Pozo's lower bound of Weierstrass weight

Nan Wangyu, Masumi Kawasaki, and Fumio Sakai

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Let $V$ be a smooth projective curve over the complex number field with genus $g \geq 2$, and let $\sigma$ be an automorphism on $V$ such that the quotient curve $V/\langle \sigma \rangle$ has genus 0. We write $d$ (resp., $b$) for the order of $\sigma$ (resp., the number of fixed points of $\sigma$). When $d$ and $b$ are fixed, the lower bound of the (Weierstrass) weights of fixed points of $\sigma$ was obtained by Perez del Pozo [7]. We obtain necessary and sufficient conditions for when the lower bound is attained.

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Kodai Math. J., Volume 41, Number 2 (2018), 332-347.

First available in Project Euclid: 2 July 2018

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Wangyu, Nan; Kawasaki, Masumi; Sakai, Fumio. On Perez Del Pozo's lower bound of Weierstrass weight. Kodai Math. J. 41 (2018), no. 2, 332--347. doi:10.2996/kmj/1530496845. https://projecteuclid.org/euclid.kmj/1530496845

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