1 citations · 3 across the 6 of their papers we have counts for
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Minimal rational curves on equivariant compactifications of symmetric spaces
Jun-Muk Hwang, Qifeng Li
Let be a symmetric space of a complex linear algebraic group and let be a nonsingular equivariant compactification of . We investigate the question: when are min…
Minimal rational curves and 1-flat irreducible G-structures
Jun-Muk Hwang, Qifeng Li
1-flat irreducible G-structures, equivalently, irreducible G-structures admitting torsion-free affine connections, have been studied extensively in differential geometry, especiall…
Unbendable rational curves of Goursat type and Cartan type
Jun-Muk Hwang, Qifeng Li
We study unbendable rational curves, i.e., nonsingular rational curves in a complex manifold of dimension with normal bundles isomorphic to $\mathcal{O}_{\mathbb{P}^1}(1)^{\opl…
Characterizing symplectic Grassmannians by varieties of minimal rational tangents
Jun-Muk Hwang, Qifeng Li
We show that if the variety of minimal rational tangents (VMRT) of a uniruled projective manifold at a general point is projectively equivalent to that of a symplectic or an odd-sy…
Fano deformation rigidity of rational homogeneous spaces of submaximal Picard numbers
Qifeng Li
We study the question whether rational homogeneous spaces are rigid under Fano deformation. In other words, given any smooth connected family f:X -> Zof Fano manifolds, if one fibe…
Deformation of product of complex Fano manifolds
Qifeng Li
Let X be a connected family of complex Fano manifolds. We show that if some fiber is the product of two manifolds of lower dimensions, then so is every fiber. Combining with previo…