Jun-Muk Hwang

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20242026

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math.DG2024

Characteristic conic connections and torsion-free principal connections

Jun-Muk Hwang, Qifeng Li

We study the relation between torsion tensors of principal connections on G-structures and characteristic conic connections on associated cone structures. We formulate sufficient c…

math.AG2024

Characterizing subadjoint varieties among Legendrian varieties

Jun-Muk Hwang

For a symplectic vector space $V$ , a projective subvariety $Z \subset P V$ is a Legendrian variety if its affine cone $Z \subset V$ is Lagrangian. In addition to th…