Sobolev Institute of Mathematics, Novosibirsk-90, 630090, Russia, e-mail: firstname.lastname@example.org
Abstract: A new approach to describing a high order flex of polyhedra is given. Sufficient conditions are derived under which an infinitesimal flex of polyhedra has an extension to an authentic flex. It is shown that one set of these conditions is fulfilled for Bricard octahedra.
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