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![]() ![]() ![]() ![]() Global Fields
Laboratoire J.-V. Poncelet |
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Philippe Lebacque Institut de Mathematiques de Luminy, France On the Set of Tsfasman-Vladut invariants of infinite global fieldsTsfasman and Vl\u adu\c t defined the set of invariants $\{\phi_q, q \text{ is a prime power, } \mathbb{R} \text{ or }\mathbb{C}\}$ of infinite global fields, but the properties of this sets are still not known. For example, we do not know if infinitely many of these invariants can be non-zero, or if there is an asymptotically good infinite number field whose finite invariants are all zero. In this direction, I will talk about the constructions of infinite global fields having $n$ prescribed non-zero invariants, and of others having $n$ prescribed zero invariants. Go to the Laboratoire Poncelet home page. |
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