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math.DG2019
Left-invariant CR structures on 3-dimensional Lie groups
Gil Bor, Howard Jacobowitz
The systematic study of CR manifolds originated in two pioneering 1932 papers of Élie Cartan. In the first, Cartan classifies all homogeneous CR 3-manifolds, the most well-known ca…
math.DG2009★ 1 cited
Non-vanishing complex vector fields and the Euler characteristic
Howard Jacobowitz
The existence of a nowhere zero real vector field implies a well-known restriction on a compact manifold. But all manifolds admit nowhere zero complex vector fields. The relation b…