Mathematics – Algebraic Geometry
Scientific paper
1992-02-14
Mathematics
Algebraic Geometry
12 pages, Plain TeX
Scientific paper
We survey some aspects of the theory of elliptic surfaces and give some results aimed at determining the Picard number of such a surface. For the surfaces considered, this will be equivalent to determining the Mordell-Weil rank of an elliptic curve defined over a function field in one variable. An interesting conjecture concerning Galois actions on the relative de~Rham cohomology of these surfaces is discussed.
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