Results 61 to 70 of about 87,109 (183)

The surgery obstruction groups of the infinite dihedral group

, 2004
This paper computes the quadratic Witt groups (the Wall L-groups) of the polynomial ring Z[t] and the integral group ring of the infinite dihedral group, with various involutions.
Arf, Browder, Connolly, Francis X Connolly, Hambleton, James F Davis, Ranicki, Ranicki, Scharlau, Wall   +9 more
core   +2 more sources

Base Size Sets and Determining Sets [PDF]

, 2014
Bridging the work of Cameron, Harary, and others, we examine the base size set B(G) and determining set D(G) of several families of groups. The base size set is the set of base sizes of all faithful actions of the group G on finite sets.
Laison, Joshua D., McNicholas, Erin M., Seaders, Nicole S.   +2 more
core  

Permutability graphs of subgroups of some finite non-abelian groups

, 2015
In this paper, we study the structure of the permutability graphs of subgroups, and the permutability graphs of non-normal subgroups of the following groups: the dihedral groups $D_n$, the generalized quaternion groups $Q_n$, the quasi-dihedral groups ...
Devi, P., Rajkumar, R.
core   +1 more source

Dimethyl 2-nitrobiphenyl-4,4′-dicarboxylate

Acta Crystallographica Section E, 2014
The title compound, C16H13NO6, exhibits a biphenyl unit with a dihedral angle between the two aryl rings of 56.01 (5)°. The two ester groups vary slightly from planarity, with aryl–ester dihedral angles of 4.57 (5) and 16.73 (5)°.
Vanessa C. M. Vieira, James A. Golen, Arnold L. Rheingold, David R. Manke   +3 more
doaj   +1 more source

Lower algebraic K-theory of certain reflection groups

, 2009
For a finite volume geodesic polyhedron P in hyperbolic 3-space, with the property that all interior angles between incident faces are integral submultiples of Pi, there is a naturally associated Coxeter group generated by reflections in the faces ...
Bass, BRUCE A. MAGURN, Curtis, Curtis, Davis, Endó, Farrell, IVONNE J. ORTIZ, JEAN-FRANÇOIS LAFONT, Lück, Oliver, Reiner, Reiner, Wagstaff   +13 more
core   +1 more source

Crystal structure of ethyl 2-[(4-bromophenyl)amino]-3,4-dimethylpent-3-enoate

Acta Crystallographica Section E, 2014
In the title compound, C15H20BrNO2, there are two independent molecules (A and B) comprising the asymmetric unit and these adopt very similar conformations.
Julio Zukerman-Schpector, I. Caracelli, Hélio A. Stefani, Amna N. Khan, Edward R. T. Tiekink   +4 more
doaj   +1 more source

Affine buildings for dihedral groups

, 2008
We construct rank 2 thick nondiscrete affine buildings associated with an arbitrary finite dihedral group.Comment: 40 pages, 10 ...
Berenstein, Arkady, Kapovich, Michael
core   +1 more source

Diethyl 2-{4-diethylamino-2-[(dimethylcarbamothioyl)oxy]benzylidene}malonate

Acta Crystallographica Section E, 2011
In the title compound, C21H30N2O5S, the plane of the dimethyl–thiocarbamic group makes a dihedral angle of 78.41 (7)° with the central benzene ring. One of the carbonyl groups in the α,β-unsaturated malonate
Dan Sun, Xiao-Xing Fan, Shi-Yao Yang, Hong Zheng   +3 more
doaj   +1 more source

Hurwitz Equivalence in Dihedral Groups

The Electronic Journal of Combinatorics, 2011
In this paper we determine the orbits of the braid group $B_n$ action on $G^n$ when $G$ is a dihedral group and for any $T \in G^n$. We prove that the following invariants serve as necessary and sufficient conditions for Hurwitz equivalence. They are: the product of its entries, the subgroup generated by its entries, and the number of times each ...
openaire   +2 more sources

The triviality of dihedral cohomology for operator algebras

Scientific African
This article delves into algebraic topology, specifically (co)homology theory, which is essential in various mathematical fields. It explores different types of (co)homology groups such as Hochschild, cyclic, reflexive, and dihedral, focusing on dihedral
Samar A.A. Quota, A.H. Noreldeen, O.H. Fathy, W.M. Mahmoud   +3 more
doaj   +1 more source