Table of Contents

A. Abbes and M. Gros: The Relative Hodge-Tate Spectral Sequence – An Overview.- L. A. Betts and D. Litt: Semisimplicity of the Frobenius action on π.- H. Diao, K.-W. Lan, R. Liu, X. Zhu.- Logarithmic adic spaces: some foundational results.- M. Gros, B. Le Stum and A. Quirós: Twisted Differential Operators and q-Crystals.- J. Lurie: Full Level Structures on Elliptic Curves.- A. Ogu: The saturated de Rham-Witt complex for schemes with toroidal singularities.