Asymptotic semistability conjecture for syzygy bundles of Ulrich bundles

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Let XX be a smooth irreducible projective variety with a fixed ample line bundle OX(1)\mathcal{O}_X(1), and let E\mathcal{E} be an Ulrich bundle on XX. For an integer mm, write E(m):=E⊗OX(m)\mathcal{E}(m):=\mathcal{E}\otimes\mathcal{O}_X(m), and let SE(m)S_{\mathcal{E}(m)} denote the kernel of the evaluation map

H0(X,E(m))⊗OX⟶E(m).H^0(X,\mathcal{E}(m))\otimes\mathcal{O}_X\longrightarrow\mathcal{E}(m).

Asymptotic semistability conjecture. There exists an integer m0≫0m_0\gg0 such that, for every m≥m0m\ge m_0, the syzygy bundle SE(m)S_{\mathcal{E}(m)} is semistable. This is proposed as a guess based on the paper's results and examples: the assertion is not established in the source and is intended to address eventual semistability after sufficiently positive twisting.

References

Primary source

Rosa M. Miró-Roig, “Stability of syzygy bundles of Ulrich bundles”, arXiv:2604.05740 (2026).

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