Displaying similar documents to “Infinitesimal rigidity of smooth convex surfaces through the second derivative of the Hilbert-Einstein functional”

Metric minimizing surfaces.

Petrunin, Anton (1999)

Electronic Research Announcements of the American Mathematical Society [electronic only]

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Invariants and Bonnet-type theorem for surfaces in ℝ4

Georgi Ganchev, Velichka Milousheva (2010)

Open Mathematics

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In the tangent plane at any point of a surface in the four-dimensional Euclidean space we consider an invariant linear map ofWeingarten-type and find a geometrically determined moving frame field. Writing derivative formulas of Frenet-type for this frame field, we obtain eight invariant functions. We prove a fundamental theorem of Bonnet-type, stating that these eight invariants under some natural conditions determine the surface up to a motion. We show that the basic geometric classes...