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On stability conditions for the quintic threefold

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arxiv 1810.03434 v2 pith:HRY6LPVY submitted 2018-10-08 math.AG

classification math.AG
keywords quinticsmoothtypeconditionsstabilitythreefoldthreefoldsallows
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abstract

We study the Clifford type inequality for a particular type of curves $C_{2,2,5}$, which are contained in smooth quintic threefolds. This allows us to prove some stronger Bogomolov-Gieseker type inequalities for Chern characters of stable sheaves and tilt-stable objects on smooth quintic threefolds. Employing the previous framework by Bayer, Bertram, Macr\`i, Stellari and Toda, we construct an open subset of stability conditions on every smooth quintic threefold in $\mathbf{P}^4_{\mathbb C}$.

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