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A Study on the Centroid of a Class of Solvable Lie Algebras
, 2023 The centroid of Lie algebra is a basic concept and a necessary tool for studying the structure of Lie algebraic structure. The extended Heisenberg algebra is an important class of solvable Lie algebras.
Demin Yu, Jiejing Ma, Chan Jiang
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tert-Butyl 3-[2,2-bis(ethoxycarbonyl)vinyl]-2-methyl-1H-indole-1-carboxylate
Acta Crystallographica Section E, 2009 In the title compound, C22H27NO6, the indole ring system is planar and the ethoxycarbonyl chains adopt extended conformations. In the crystal, inversion dimers linked by pairs of C—H...O hydrogen bonds occur, resulting in R22(16) dimers, which ...
M. Thenmozhi +4 more
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Acta Crystallographica Section E: Crystallographic Communications, 2019 In the title molecule, C21H25N3O, the 1-decyl substituents are in an extended conformation and intercalate in the crystal packing to form hydrophobic bands.
Ibtissam Rayni +5 more
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Joint shape and centroid position tracking of a cluster of space debris by filtering on Lie groups
, 2021 International audienceSpace surveillance aims at detecting and tracking pieces of debris that are orbiting around the Earth. When the latter are sufficiently close to each other to form a compact cluster, they can be considered as a single extended ...
BENOUDIBA-CAMPANINI, Thomas +6 more
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2-Bromo-4-chloro-6-{(E)-[4-(diethylamino)phenyl]iminomethyl}phenol
Acta Crystallographica Section E, 2010 In the title compound, C17H18BrClN2O, the dihedral angle between the aromatic rings is 3.0 (1)°. The methylethanamine group assumes an extended conformation.
K. Manvizhi +4 more
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Minimum centroid neighborhood for minimum zone sphericity [PDF]
, 2014 The minimum zone sphericity tolerance is derived from the ANSI and ISO standards for roundness and has extensive applications in the tribology of ball bearings, hip joints and other lubricated pairs.
Stefano Chiodi +2 more
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Dichloridobis{1-[(2-methylbenzimidazol-1-yl-κN3)methyl]benzotriazole}zinc
Acta Crystallographica Section E, 2012 The title mononuclear ZnII complex, [ZnCl2(C15H13N5)2], is isotypic with the previously reported HgII complex. The ZnII atom is located on a twofold rotation axis and has a distorted tetrahedral environment of two Cl atoms and two N atoms from two ...
Lianqing Song +4 more
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Acta Crystallographica Section E, 2011 In the title compound, [Co2(C12H8O12)(C12H8N2)2]n, each 3,6-dicarboxycyclohexane-1,2,4,5-tetracarboxylate (H2chhc4−) anion has crystallographically imposed C2 symmetry and bridges four six-coordinate Co atoms, generating polymeric chains ...
Wei Xu
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Extending the global-direction stencil with “face-area-weighted centroid” to unstructured finite volume discretization from integral form [PDF]
Advances in Aerodynamics, 2020 Abstract Accuracy of unstructured finite volume discretization is greatly influenced by the gradient reconstruction. For the commonly used k-exact reconstruction method, the cell centroid is always chosen as the reference point to formulate the reconstructed function. But in
Lingfa Kong +3 more
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Ethyl 2-(4-methoxyphenyl)-1-methyl-1H-benzimidazole-5-carboxylate
IUCrData, 2017 In the title benzimidazole derivative, C18H18N2O3, the methoxyphenyl ring is twisted with respect to the benzimidazole ring system, making a dihedral angle of 28.81 (5)°. The pendant ethyl chain has an extended conformation.
S. Naveen +6 more
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