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2012

Some examples of tilt-stable objects on threefolds

Lo, Jason, More, Yogesh

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We investigate properties and describe examples of tilt-stable objects on a smooth complex projective threefold.

We give a structure theorem on slope semistable sheaves of vanishing discriminant, and describe certain Chern classes for which every slope semistable sheaf yields a Bridgeland semistable object of maximal phase.
Then, we study tilt stability as the polarisation $\omega$ gets large, and give sufficient conditions for tilt-stability of sheaves of the following two forms: 1) twists of ideal sheaves or 2) torsion-free sheaves whose first Chern class is twice a minimum possible value.

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