Reverse Alexandrov-Fenchel and Heintze-Karcher inequalities are proved with deficits controlled by oriented volumes of focal maps, yielding sharp estimates in Minkowski planes, Euclidean space, spheres, and hyperbolic space.
Compact hypersurfaces with constant higher order mean curvatures.Revista Matem´ atica Iberoamericana, 3(3–4):447–453, 1987
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Heintze-Karcher and Reverse Alexandrov-Fenchel Inequalities via Focal Geometry
Reverse Alexandrov-Fenchel and Heintze-Karcher inequalities are proved with deficits controlled by oriented volumes of focal maps, yielding sharp estimates in Minkowski planes, Euclidean space, spheres, and hyperbolic space.