English

A Laurent Phenomenon for the Cayley Plane

Algebraic Geometry 2024-04-16 v3

Abstract

We describe a Laurent phenomenon for the Cayley plane, which is the homogeneous variety associated to the cominuscule representation of E6E_6. The corresponding Laurent phenomenon algebra has finite type and appears in a natural sequence of LPAs indexed by the EnE_n Dynkin diagrams for n6n\leq6. We conjecture the existence of a further finite type LPA, associated to the Freudenthal variety of type E7E_7.

Cite

@article{arxiv.2310.10223,
  title  = {A Laurent Phenomenon for the Cayley Plane},
  author = {Oliver Daisey and Tom Ducat},
  journal= {arXiv preprint arXiv:2310.10223},
  year   = {2024}
}
R2 v1 2026-06-28T12:51:44.624Z