The nonexistence conjecture for Ulrich partitions with two large blocks

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Let (α,β,γ)(\alpha,\beta,\gamma) be the type of an Ulrich partition. Nonexistence conjecture. There are no Ulrich partitions of type (α,β,γ)(\alpha,\beta,\gamma) if β≥3\beta\geq3 and γ≥3\gamma\geq3. The paper states that its partial classification implies this is equivalent to the complete-list conjecture above; since that classification is incomplete, the nonexistence statement remains open.

References

Primary source

Izzet Coskun, Laura Costa, Jack Huizenga, Rosa Maria Miró-Roig and Matthew Woolf, “Ulrich Schur bundles on flag varieties”, arXiv:1512.06193 (2015).

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