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Calabi-Yau operators of degree two

Algebraic Geometry 2021-03-17 v1

Abstract

We show that the solutions to the equations defining the so-called Calabi-Yau condition for fourth order operators of degree two defines a variety that consists of ten irreducible components. These can be described completely in parametric form, but only two of the components seem to admit arithmetically interesting operators. We include a description of the 69 essentially distinct fourth order Calabi-Yau operators of degree two that are presently known to us.

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Cite

@article{arxiv.2103.08651,
  title  = {Calabi-Yau operators of degree two},
  author = {Gert Almkvist and Duco van Straten},
  journal= {arXiv preprint arXiv:2103.08651},
  year   = {2021}
}

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53 pages