49 citations · 113 across the 27 of their papers we have counts for
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math.DG2013★ 10 cited
Quaternionic contact Einstein manifolds
S. Ivanov, I. Minchev, D. Vassilev
The main result is that the qc-scalar curvature of a seven dimensional quaternionic contact Einstein manifold is a constant. In addition, we characterize qc-Einstein structures wit…
math.DG2013
The Obata sphere theorems on a quaternionic contact manifold of dimension bigger than seven
Stefan Ivanov, Alexander Petkov, Dimiter Vassilev
We prove a quaternionic contact versions of the Obata's sphere theorems. We show that if the first positive eigenvalue of the sub-Laplacian on a compact qc manifold of dimension bi…