71 citations · 539 across the 32 of their papers we have counts for
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math.DG2018★ 6 cited
Algebraic tangent cones of reflexive sheaves
Xuemiao Chen, Song Sun
We study the notion of algebraic tangent cones at singularities of reflexive sheaves. These correspond to extensions of reflexive sheaves across a negative divisor. We show the exi…
math.DG2018★ 24 cited
Nilpotent structures and collapsing Ricci-flat metrics on K3 surfaces
Hans-Joachim Hein, Song Sun, Jeff Viaclovsky +1
We exhibit families of Ricci-flat Kahler metrics on K3 surfaces which collapse to an interval, with Tian-Yau and Taub-NUT metrics occurring as bubbles. There is a corresponding con…
math.DG2018★ 9 cited
Analytic tangent cones of admissible Hermitian-Yang-Mills connections
Xuemiao Chen, Song Sun
In this paper we study the analytic tangent cones of admissible Hermitian-Yang-Mills connections near a homogeneous singularity of a reflexive sheaf, and relate it to the Harder-Na…