摘要 : Let (X, D-X) be a smooth pointed stable curve over an algebraically closed field kof characteristic p > 0. Suppose that (X, D-X) is generic. We give a necessary and sufficient condition for new-ordinariness of prime-to-pcyclic tam... 展开 Let (X, D-X) be a smooth pointed stable curve over an algebraically closed field kof characteristic p > 0. Suppose that (X, D-X) is generic. We give a necessary and sufficient condition for new-ordinariness of prime-to-pcyclic tame coverings of (X, D-X). This result generalizes a result of S. Nakajima concerning the ordinariness of prime-to-p cyclic etale coverings of generic curves to the case of tamely ramified coverings. (C) 2021 Elsevier Inc. All rights reserved. 收起