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.
References
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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