RCD homeomorphism conjecture for singular Kähler varieties
RCD homeomorphism conjecture for singular Kähler varieties
Let be a normal Kähler variety with klt singularities. Let be a Kähler current whose volume measure has an density for some , whose Ricci current is bounded below by , and which is smooth on a Zariski open subset of . Consider the metric measure space .
RCD homeomorphism conjecture. The metric completion of is a non-collapsed RCD space homeomorphic to .
This conjecture would connect Kähler geometry on singular varieties with the topology and metric structure of RCD spaces. The source introduces it as a main question in the developing theory, with no resolution stated.
Sources & referencesView supporting material
Primary source
Xin Fu, Bin Guo, Jian Song and Juanyong Wang, “Fundamental groups of compact Kahler varieties with nef anti canonical bundle”, arXiv:2602.07420 (2026).
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