ABCH's explicit Bridgeland–Mori wall correspondence conjecture for the Hilbert scheme

Let IZI_Z be the ideal sheaf of a point ZP2[n]Z\in\mathbb{P}^{2[n]}. A Bridgeland wall is a wall WxW_x in the family of walls WIZ,(r,c,d)W_{I_Z,(r',c',d')} along which some ideal sheaf IZI_Z is destabilized. With nn fixed, such walls are parametrized by their centers (x,0)(x,0). A Mori wall is a ray

H+12yΔH+\frac{1}{2y}\Delta

in Eff(P2[n])\operatorname{Eff}(\mathbb{P}^{2[n]}) where the stable base locus of a divisor changes; it is parametrized by y<0y<0. ABCH's explicit wall correspondence conjecture. There is a one-to-one correspondence between Bridgeland walls WxW_x and Mori walls H+12yΔH+\frac{1}{2y}\Delta for P2[n]\mathbb{P}^{2[n]} given by

x=y32.x=y-\frac{3}{2}.

This gives an explicit form of the conjectural correspondence between Bridgeland stability walls and Mori chamber walls, relating stability conditions to the birational geometry of the Hilbert scheme.

Sources & referencesView supporting material

Primary source

Jack Huizenga, “Effective divisors on the Hilbert scheme of points in the plane and interpolation for stable bundles”, arXiv:1210.6576 (2013).

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