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| date_dt : 2010-01-27 | date_dt : 2010-01-27 | ||
| title : The parameters of duals of algebraic geometric codes on surfaces | title : The parameters of duals of algebraic geometric codes on surfaces | ||
| - | speaker : Alain Couvreur | + | speaker : Dr. Alain Couvreur |
| - | affiliation : Institut de Mathématiques de Luminy. | + | affiliation : INRIA. |
| time : 16h15 | time : 16h15 | ||
| room : BC129 | room : BC129 | ||
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| ==== abstract ==== | ==== abstract ==== | ||
| - | It is well-known in the theory of codes on curves that the dual of an | + | It is well-known in the theory of codes on curves that the dual of an |
| algebraic-geometric code on a curve is an algebraic-geometric code on | algebraic-geometric code on a curve is an algebraic-geometric code on | ||
| the same curve. It turns out that this property does not hold in general | the same curve. It turns out that this property does not hold in general | ||
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| duals of algebraic geometric codes on higher-dimensional varieties. | duals of algebraic geometric codes on higher-dimensional varieties. | ||
| - | In this talk, after a brief review on the classical properties of codes | + | In this talk, after a brief review on the classical properties of codes |
| on curves, we will focus on the problem of finding the parameters of | on curves, we will focus on the problem of finding the parameters of | ||
| duals of codes on surfaces. A method yielding a lower bound for the | duals of codes on surfaces. A method yielding a lower bound for the | ||