Research output: Contribution to journal › Article › peer-review
A sufficient condition for a polyhedron to be rigid. / Alexandrov, Victor.
In: Journal of Geometry, Vol. 110, No. 2, 38, 01.08.2019.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - A sufficient condition for a polyhedron to be rigid
AU - Alexandrov, Victor
PY - 2019/8/1
Y1 - 2019/8/1
N2 - We study oriented connected closed polyhedral surfaces with non-degenerate triangular faces in three-dimensional Euclidean space, calling them polyhedra for short. A polyhedron is called flexible if its spatial shape can be changed continuously by changing its dihedral angles only. We prove that for every flexible polyhedron some integer combination of its dihedral angles remains constant during the flex. The proof is based on a recent result of A. A. Gaifullin and L. S. Ignashchenko.
AB - We study oriented connected closed polyhedral surfaces with non-degenerate triangular faces in three-dimensional Euclidean space, calling them polyhedra for short. A polyhedron is called flexible if its spatial shape can be changed continuously by changing its dihedral angles only. We prove that for every flexible polyhedron some integer combination of its dihedral angles remains constant during the flex. The proof is based on a recent result of A. A. Gaifullin and L. S. Ignashchenko.
KW - Bricard octahedron
KW - Dehn invariant
KW - Dihedral angle
KW - Flexible polyhedron
KW - Hamel basis
KW - BELLOWS CONJECTURE
KW - FLEXIBLE POLYHEDRA
KW - CROSS-POLYTOPES
KW - VOLUME
KW - INVARIANT
UR - http://www.scopus.com/inward/record.url?scp=85067584456&partnerID=8YFLogxK
U2 - 10.1007/s00022-019-0492-0
DO - 10.1007/s00022-019-0492-0
M3 - Article
AN - SCOPUS:85067584456
VL - 110
JO - Journal of Geometry
JF - Journal of Geometry
SN - 0047-2468
IS - 2
M1 - 38
ER -
ID: 20642746