The semi-algebraicity conjecture for K-semistable domains

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Let XX be a normal projective variety, and let DjD_j for 1≤j≤k1\leq j\leq k be effective Weil divisors on XX. The notation Kss⁡(X,∑j=1kDj)\operatorname{Kss}(X,\sum_{j=1}^k D_j) denotes the K-semistable domain associated with these divisors. Semi-algebraicity conjecture. The set

Kss⁡(X,∑j=1kDj)\operatorname{Kss}\left(X,\sum_{j=1}^kD_j\right)

is a semi-algebraic set. A semi-algebraic description of the K-semistable domain is identified as an important ingredient in extending the wall-crossing results without the volume condition (♣)(\clubsuit); its resolution would support the conjectural volume-free chamber decomposition.

References

Primary source

Yuchen Liu and Chuyu Zhou, “Non-proportional wall crossing for K-stability”, arXiv:2412.15725 (2026).

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