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• W2951168931 abstract "Let $ Y subseteq Bbb P^N $ be a possibly singular projective variety, defined over the field of complex numbers. Let $X$ be the intersection of $Y$ with $h$ general hypersurfaces of sufficiently large degrees. Let $d>0$ be an integer, and assume that $dim Y=n+h$ and $ dim Y_{sing} le min{ d+h-1 , n-1 } $. Let $Z$ be an algebraic cycle on $Y$ of dimension $d+h$, whose homology class in $H_{2(d+h)}(Y; Bbb Q)$ is non-zero. In the present paper we prove that the restriction of $Z$ to $X$ is not algebraically equivalent to zero. This is a generalization to the singular case of a result due to Nori in the case $Y$ is smooth. As an application we provide explicit examples of singular varieties for which homological equivalence is different from the algebraic one." @default.
• W2951168931 created "2019-06-27" @default.
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• W2951168931 date "2014-04-29" @default.
• W2951168931 modified "2023-09-24" @default.
• W2951168931 title "Algebraic versus homological equivalence for singular varieties" @default.
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• W2951168931 hasPublicationYear "2014" @default.
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