Modified Segre conjecture for fat points in arbitrary position
Modified Segre conjecture for fat points in arbitrary position
Fix integers and . Let be a finite collection of points, fix integers , and set
Let be the total weight of , and for a linear subspace let be the sum of the multiplicities of the points lying in . Modified Segre conjecture. Then if all the following conditions hold: ; for each line ; and, for every integer and every -dimensional linear subspace , , with the additional assumption whenever . This conjecture modifies Segre's conjecture for points in arbitrary position by imposing weight conditions on linear subspaces and a boundary cohomology condition. The supplied text presents examples and evidence but no resolution, so the conjecture remains open.
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Sources & referencesView supporting material
Primary source
Edoardo Ballico, Olivia Dumitrescu and Elisa Postinghel, “On Segre's bound for fat points in P^n”, arXiv:1504.05151 (2015).
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