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The Almost Schur Lemma in Quaternionic Contact Geometry
Stefan Ivanov, Alexander Petkov
We establish quaternionic contact (qc) versions of the so called Almost Schur Lemma, which give estimations of the qc scalar curvature on a compact qc manifold to be a constant in…
math.DG2022
The CR Almost Schur Lemma and the positivity conditions
Stefan Ivanov, Alexander Petkov
We establish a new version of the CR almost Schur Lemma which gives an estimation of the pseudohermitian scalar curvature on a compact strictly pseudoconvex pseudohermitian manifol…