Abstract
The classification of minimal algebraic surfaces in positive characteristics was accomplished by Bombieri and Mumford in the 1970s. In this work we decide completely which minimal algebraic surfaces in positive characteristics allow a lifting of their Frobenius over the truncated Witt rings of length 2. Besides, we show that the Frobenius morphism of many projective rational surfaces cannot be lifted to \(W_2(k)\).
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Acknowledgments
The author would like to thank Prof. Xiaotao Sun for a careful reading of a draft of this work. The author would also like to thank the reviewers for pointing out mistakes in the original version of this work and also their helpful advice on improving this work.
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Xin, H. On \(W_2\)-lifting of Frobenius of algebraic surfaces. Collect. Math. 67, 69–83 (2016). https://doi.org/10.1007/s13348-014-0130-y
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DOI: https://doi.org/10.1007/s13348-014-0130-y