β-flatness condition in CR spheres multiplicity results
DOI10.1142/S0129167X20500238zbMath1440.53029arXiv1812.09614OpenAlexW2997236219MaRDI QIDQ5112231
Najoua Gamara, Boutheina Hafassa, Akrem Makni
Publication date: 28 May 2020
Published in: International Journal of Mathematics (Search for Journal in Brave)
Full work available at URL: https://arxiv.org/abs/1812.09614
Morse lemmaWebster scalar curvatureCR spherescritical point at infinity\( \beta \)-flatness conditionPoincaré-Hopf-type formula
Abstract critical point theory (Morse theory, Lyusternik-Shnirel'man theory, etc.) in infinite-dimensional spaces (58E05) General geometric structures on manifolds (almost complex, almost product structures, etc.) (53C15) Methods of global Riemannian geometry, including PDE methods; curvature restrictions (53C21) Critical points and critical submanifolds in differential topology (57R70)
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