Partially supported by National Natural Science Foundation of China(Grant No.10871183);Partially supported by Specialized Research Fund for the Doctoral Program of Higher Education(Grant No.200803580047);Partially supported by the Fundamental Research Funds for the Central Universities(Grant No.0010000006)
The Dieudonne Manin classification theorem on φ-modules (φ-isocrystals) over a perfect field plays a very important role in p-adic Hodge theory. In this note, in a more general setting we give a new proof of this ...