Deformation rigidity of the double Cayley Grassmannian
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초록

The double Cayley Grassmannian is a unique smooth equivariant completion with Picard number one of the 14-dimensional exceptional complex Lie group G2, and it parametrizes eight-dimensional isotropic subalgebras of the complexified bi-octonions. We show the rigidity of the double Cayley Grassmannian under Kähler deformations. This means that for any smooth projective family of complex manifolds over a connected base of which one fiber is biholomorphic to the double Cayley Grassmannian, all other fibers are biholomorphic to the double Cayley Grassmannian. © 2024

키워드

Deformation rigidityDouble Cayley GrassmannianProlongations of a linear Lie algebraVariety of minimal rational tangents
제목
Deformation rigidity of the double Cayley Grassmannian
저자
Kim, Shin-youngPark, Kyeong-Dong
DOI
10.1016/j.difgeo.2024.102219
발행일
2025-06
유형
Article
저널명
Differential Geometry and its Application
99