Asymptotic existence conjecture for pure Betti diagrams
Asymptotic existence conjecture for pure Betti diagrams
Let be a degree sequence, and let denote the smallest integer diagram on the ray for . Such integer diagrams are for . Asymptotic existence conjecture for pure Betti diagrams. For every degree sequence there is an integer such that, for , the diagram is the Betti diagram of a module.
This asks whether every ray generated by a pure diagram contains actual Betti diagrams after sufficiently large integral scaling. The supplied text gives examples and notes that the problem is harder, but does not state whether the conjecture has been resolved.
Sources & referencesView supporting material
Primary source
Gunnar Floystad, “Boij-Söderberg theory: Introduction and survey”, arXiv:1106.0381 (2012).
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