The nonexistence conjecture for Ulrich partitions with two large blocks

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 β3\beta\geq3 and γ3\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.

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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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