نتایج جستجو برای: crossed polymodule

تعداد نتایج: 13719  

2009
Z. ARVASİ

In this paper following Conduché’s, [12], way of defining 2-crossed modules which are equivalent to Carrasco-Cegarra’s, [10], 2-hyper crossed complexes, we define the three crossed module of groups as a model for 4-types.

2009
Emad Abuelrub

The hypercube parallel architecture is one of the most popular interconnection networks due to many of its attractive properties and its suitability for general purpose parallel processing. An attractive version of the hypercube is the crossed cube. It preserves the important properties of the hypercube and most importantly reduces the diameter by a factor of two. In this paper, we show the abi...

Journal: :Experimental Mathematics 2014
Graham Ellis Le Van Luyen

There is a well-known equivalence between the homotopy types of connected CW-spaces X with πnX=0 for n 6= 1, 2 and the quasi-isomorphism classes of crossed modules ∂ : M → P [16]. When the homotopy groups π1X and π2X are finite one can represent the homotopy type of X by a crossed module in which M and P are finite groups. We define the order of such a crossed module to be |∂| = |M | × |P |, an...

2008
Florin Panaite Freddy Van Oystaeyen

We introduce a more general version of the so-called L-R-smash product and study its relations with other kinds of crossed products (two-sided smash and crossed product and diagonal crossed product).

Journal: :Ikonion journal of mathematics 2022

In this paper, we have introduced the category of 2-quasi crossed modules for Lie algebras and constructed a pair adjoint functors between that 2-crossed algebras.

2008
RONALD BROWN

The classifying space of a crossed complex generalises the construction of Eilenberg-Mac Lane spaces. We show how the theory of fibrations of crossed complexes allows the analysis of homotopy classes of maps from a free crossed complex to such a classifying space. This gives results on the homotopy classification of maps from a CW -complex to the classifying space of a crossed module and also, ...

Journal: :international journal of group theory 2012
nguyen tien quang che thi kim phung pham thi cuc

the aim of this paper is to study the $(alpha‎, ‎gamma)$-prolongation of central extensions‎. ‎we obtain the obstruction theory for $(alpha‎, ‎gamma)$-prolongations and classify $(alpha‎, ‎gamma)$-prolongations thanks to low-dimensional cohomology groups of groups‎.

Journal: :iranian journal of public health 0
mahdi ben dhaou hamdi louati ahmed kotti hayet zitouni mohamed jalouli riadh mhiri

no abstract.

2000
M. S. Fuhrer Andrew K.L. Lim L. Shih U. Varadarajan A. Zettl Paul L. McEuen

In order to study the electronic properties of single-walled carbon nanotube junctions we have fabricated several devices consisting of two crossed nanotubes with electrical leads attached to each end of each nanotube. We correlate the properties of the junctions with the properties of the individual nanotubes: metal–metal, metal–semiconductor, and semiconductor– semiconductor junctions are all...

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