Hasse proved that for quadrics the existence of rational points reduces to the existence of solutions over local fields. In many cases, cohomological constructions provide obstructions to such a local to global principle. The objective of these lectures is to give an introduction to these cohomological tools.
Recording during the meeting "Geometric and Analytic Methods for Rational Points" the April 18, 2019 at the Centre International de Rencontres Mathématiques (Marseille, France)
Filmmaker: Guillaume Hennenfent
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Cyril Demarche: Cohomological obstructions to local-global principles - lecture 2 cnrs montpellier | |
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| Science & Technology | Upload TimePublished on 21 May 2019 |
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