Principal Homogeneous Spaces for Finite Group Schemes
نویسندگان
چکیده
منابع مشابه
On the Geometry of Principal Homogeneous Spaces
Let k be an algebraically closed field, let π : X → B be an elliptic surface defined over k, and let XK be the generic fiber of π, which is an elliptic curve defined over the field K = k(B), the function field of B. If f : Y → B is a genus one fibration locally isomorphic to X (in the étale topology on B), then Y corresponds to a principal homogeneous space YK over XK which is everywhere locall...
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ژورنال
عنوان ژورنال: Proceedings of the American Mathematical Society
سال: 1969
ISSN: 0002-9939
DOI: 10.2307/2037457