33 citations · 63 across the 17 of their papers we have counts for
19 papers
On the classificarion of 3-dimensional spherical Sasakian manifolds
Daniel Sykes, Gerd Schmalz, Vladimir Ezhov
In this article we consider spherical hypersurfaces in with a fixed Reeb vector field as 3-dimensional Sasakian manifolds. We establish the correspondence between thr…
CR embeddings of nilpotent Lie groups
M. G. Cowling, M. Ganji, A. Ottazzi +1
We show that a connected, simply connected nilpotent Lie group with an integrable left-invariant complex structure on a generating and suitably complemented subbundle of the tangen…
CR embeddings of CR manifolds
M. G. Cowling, M. Ganji, A. Ottazzi +1
We improve results of Baouendi, Rothschild and Treves and of Hill and Nacinovich by finding a much weaker sufficient condition for a CR manifold of type to admit a local CR…
Relative roles of multiple scattering and Fresnel diffraction in the imaging of small molecules using electrons, Part II: Differential Holographic Tomography
T. E. Gureyev, H. M. Quiney, A. Kozlov +3
It has been argued that in atomic-resolution transmission electron microscopy (TEM) of sparse weakly scattering structures, such as small biological molecules, multiple electron sc…
Lorentzian manifolds with shearfree congruences and Kähler-Sasaki geometry
Dmitri V. Alekseevsky, Masoud Ganji, Gerd Schmalz +1
We study Lorentzian manifolds of dimension , equipped with a maximally twisting shearfree null vector field , for which the leaf space …
Quasi-Einstein shearfree spacetimes lifted from Sasakian manifolds
Masoud Ganji, Gerd Schmalz, Daniel Sykes
In this article we prove that a certain class of {\it smooth} Sasakian manifolds admits lifts to 4-dimensional quasi-Einstein shearfree spacetimes of Petrov type II or D. This is r…