On any compact toric contact manifold of Reeb type, T-invariant CR structures realize both positive and negative CR Yamabe invariants, via a polytope PDE reduction.
Robustness of CSC Sasaki existence under the join operation
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abstract
The main purpose of this work is to explore the existence of constant scalar curvature Sasaki metrics in the Sasaki cone of the join of two regular Sasaki manifolds, $M_1$ and $M_2$. Furthermore, we consider some cases of continuous families of extremal Sasaki twins.
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math.DG 1years
2026 1verdicts
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The toric CR Yamabe problem
On any compact toric contact manifold of Reeb type, T-invariant CR structures realize both positive and negative CR Yamabe invariants, via a polytope PDE reduction.