Conjecture that p-SKT and p-Kähler manifolds coincide under the ∂∂̄-lemma

Let XX be a compact complex manifold of complex dimension nn satisfying the ∂∂̄-lemma, and let pp be an integer with 1pn11\leq p\leq n-1. The properties pp-SKT and pp-Kähler are the degree-pp strong Kähler-with-torsion and Kähler-type positivity properties, respectively.

pp-SKT/pp-Kähler conjecture.

X is p-SKTX is p-Ka¨hler,1pn1.X\text{ is }p\text{-SKT}\quad\Longleftrightarrow\quad X\text{ is }p\text{-Kähler},\qquad 1\leq p\leq n-1.

The conjecture seeks an equivalence between these two degree-pp structures under the ∂∂̄-lemma. The source notes that pp-SKT is stable under small deformations in this setting, but does not state that the conjectured equivalence is known.

Sources & referencesView supporting material

Primary source

Abdelouahab Khelifati, “Deformations of Non-Kähler Hyperbolicity Notions and Modifications of Degenerate Balanced Manifolds”, arXiv:2512.19284 (2026).

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