On the covering of t-sets with (t + 1)-sets:C(9, 5, 4) and C(10, 6, 5)
نویسندگان
چکیده
منابع مشابه
1-Formyl-r-2,c-6-bis(4-methoxyphenyl)-t-3,t-5-dimethylpiperidin-4-one
In the title compound, C(22)H(25)NO(4), the piperidine ring adopts a distorted boat conformation. The methyl groups at the 3 and 5 positions of the piperidine ring are in axial and equatorial orientations, respectively. Both H and O atoms in the aldehyde group are disordered over two positions with occupancies of 0.534 (5) and 0.466 (5). In the crystal, the mol-ecules are linked into a three-di...
متن کامل1-Dichloroacetyl-r-2,c-6-bis(4-methoxyphenyl)-t-3,t-5-dimethylpiperidin-4-one
In the title compound, C(23)H(25)Cl(2)NO(4), the piperidine ring adopts a distorted boat conformation. The dihedral angle between the benzene rings is 54.8 (1)°. In the crystal, the mol-ecules are linked into a two-dimensional network parallel to the ab plane by C-H⋯O hydrogen bonds.
متن کامل1-Formyl-t-3,t-5-dimethyl-r-2,c-6-diphenylpiperidin-4-one
In the title compound, C(20)H(21)NO(2), the piperidine ring adopts a distorted boat conformation. The dihedral angle between the two phenyl rings is 61.33 (18)°. In the crystal, inter-molecular C-H⋯O inter-actions link the mol-ecules into zigzag C(5) chains running parallel to [100].
متن کامل1-Dichloroacetyl-t-3,t-5-dimethyl-r-2,c-6-diphenylpiperidin-4-one
In the title compound, C21H21Cl2NO2, the piperidine ring adopts a distorted boat conformation. The phenyl rings substituted at the 2- and 6-positions of the piperidine ring subtend angles of 87.9 (7) and 70.8 (9)°, respectively, with the best plane through the piperidine ring. In the crystal, mol-ecules are connected by C-H⋯O and C-H⋯Cl inter-actions into layers in the ab plane.
متن کاملNumber 2 - 1 3 - 1 4 - 1 5 - 1 5 - 2 5 - 3 5 - 4 5 - 5 5 - 6 5 - 7 5 - 8 6 - 1 •
A decentralized failure detection and isolation (FDI) methodology, which is robust with respect to model uncertainties and noise, is presented. Redundancy metrics are developed, and optimization problems are posed for the choices of robust parity relations. Closed-form solutions for some special failure cases are given. Connections are drawn with other disciplines, and the use of the metrics to...
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ژورنال
عنوان ژورنال: Discrete Mathematics
سال: 1991
ISSN: 0012-365X
DOI: 10.1016/0012-365x(91)90267-6