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math.DG2025
On contact and finitely Levi-nondegenerate CR algebras
Stefano Marini, Costantino Medori, Mauro Nacinovich
We study CR-manifolds of arbitrary CR codimension, mainly focusing on Levi and contact-nondegeneracy and depth. We investigate these and other invariants in the locally homogeneous…
math.DG2025
On Homogeneous CR Manifolds of Arbitrary Order of Levi Nondegeneracy
Stefano Marini, Costantino Medori
This paper present homogeneous CR hypersurfaces satisfying the -invariant property of being -nondegenerate for an arbitrary integer . The construction of such homog…