Abstract
For a finite group $G$ and its subgroup $H$ which does not contain any normal subgroup of $G$ except the identity, criterions for the existence or non-existence of Hurwitz families of special type of $(G,H)$-coverings of the Riemann sphere are given.
Citation
Takashi Masuda. "Families of finite coverings of the Riemann sphere." Osaka J. Math. 48 (2) 515 - 540, June 2011.
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