We introduce a certain class of so-called perfectoid rings and spaces, which give a natural framework for Faltings’ almost purity theorem, and for which there is a natural tilting operation which exchanges characteristic 0 and characteristic p. We deduce the weight-monodromy conjecture in certain cases by reduction to equal characteristic.
@article{PMIHES_2012__116__245_0, author = {Scholze, Peter}, title = {Perfectoid {Spaces}}, journal = {Publications Math\'ematiques de l'IH\'ES}, pages = {245--313}, publisher = {Springer-Verlag}, volume = {116}, year = {2012}, doi = {10.1007/s10240-012-0042-x}, zbl = {1263.14022}, language = {en}, url = {http://www.numdam.org/articles/10.1007/s10240-012-0042-x/} }
Scholze, Peter. Perfectoid Spaces. Publications Mathématiques de l'IHÉS, Tome 116 (2012), pp. 245-313. doi : 10.1007/s10240-012-0042-x. http://www.numdam.org/articles/10.1007/s10240-012-0042-x/
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