Scalar-curvature extension conjecture for the Kähler–Ricci flow coupled with a (1,1)-form

From papers

Let (X,ω)(\mathcal{X},\omega) be a closed Kähler manifold and let α\alpha be a closed nonnegative (1,1)(1,1)-form satisfying

[ω]=2πc1(X)+[α].[\omega]=-2\pi c_1(\mathcal{X})+[\alpha].

Let (ω(t),α(t))(\omega(t),\alpha(t)) solve the Kähler–Ricci flow coupled with (1,1)(1,1)-forms on its maximal interval. Scalar-curvature extension conjecture. Under this topological condition, if Rω(t)R_{\omega(t)} and trω(t)α(t)\operatorname{tr}_{\omega(t)}\alpha(t) are uniformly bounded, then the flow exists for all time. The conjecture is an analogue of the scalar-curvature extension question for Ricci flow. The source notes progress for the Calabi flow via an elliptic approach, while the parabolic approach remains open.

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Sources & referencesView supporting material

Primary source

Chuanhuan Li and Yi Li, “Long-time existence of some geometric flows with bounded scalar curvature”, arXiv:2606.10354 (2026).

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