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arxiv: 1402.4153 · v4 · pith:3CMFG2L5new · submitted 2014-02-17 · 🧮 math.AG

Hypersurfaces quartiques de dimension 3 : non rationalit\'e stable

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keywords mathbbhypersurfaceschowquartiquesvoisinargumentdansdegr
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Inspir\'es par un argument de C. Voisin, nous montrons l'existence d'hypersurfaces quartiques lisses dans ${\bf P}^4_{\mathbb C}$ qui ne sont pas stablement rationnelles, plus pr\'ecis\'ement dont le groupe de Chow de degr\'e z\'ero n'est pas universellement \'egal \`a $\mathbb Z$. --- There are (many) smooth quartic hypersurfaces in ${\bf P}^4_{\mathbb C}$ which are not stably rational. More precisely, their degree zero Chow group is not universally equal to $\mathbb Z$. The proof uses a variation of a specialisation method due to C. Voisin.

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