Results 51 to 60 of about 135,152 (246)

Matchings in hexagonal cacti

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1987
Explicit recurrences are derived for the matching polynomials of the basic types of hexagonal cacti, the linear cactus and the star cactus and also for an associated graph, called the hexagonal crown.
E. J. Farrell
doaj   +1 more source

Proposition pour un archétype urbain logico-géographique : l’association « logique trichotomique -logique ternaire antagoniste » et son intérêt géographique

open access: yesCybergeo, 2018
Our previous papers showed the interest of using both structural binary logic and, particularly, processual ternary logic to apprehend resilience in urban geography. This paper is an in depth exploration of the association of S.
Henri Reymond, Colette Cauvin
doaj   +1 more source

Conics and Transformations Defined by the Parallelians of a Triangle

open access: yesMathematics
For any point P in the Euclidean plane of a triangle Δ, the six parallelians of P lie on a single conic, which shall be called the parallelian conic of P with respect to Δ. We provide a synthetic and an analytic proof of this fact.
Helena Koncul   +2 more
doaj   +1 more source

Loop lessons from Wilson loops in N=4 supersymmetric Yang-Mills theory

open access: yes, 2011
N=4 supersymmetric Yang-Mills theory exhibits a rather surprising duality of Wilson-loop vacuum expectation values and scattering amplitudes. In this paper, we investigate this correspondence at the diagram level.
A Brandhuber   +31 more
core   +1 more source

Positivity of hexagon perturbation theory

open access: yes, 2018
The hexagon-form-factor program was proposed as a way to compute three- and higher-point correlation functions in $\mathcal{N}=4$ super-symmetric Yang-Mills theory and in the dual AdS$_5\times$S$^5$ superstring theory, by exploiting the integrability of ...
de Leeuw, Marius   +5 more
core   +1 more source

The one-loop six-dimensional hexagon integral with three massive corners

open access: yes, 2011
We compute the six-dimensional hexagon integral with three non-adjacent external masses analytically. After a simple rescaling, it is given by a function of six dual conformally invariant cross-ratios.
/aff CERN /LAPTH, Annecy-le-Vieux   +11 more
core   +4 more sources

Directional optical switching and transistor functionality using optical parametric oscillation in a spinor polariton fluid

open access: yes, 2017
Over the past decade, spontaneously emerging patterns in the density of polaritons in semiconductor microcavities were found to be a promising candidate for all-optical switching.
Binder, Rolf   +6 more
core   +1 more source

Topological Properties of Electrons in Honeycomb Lattice with Kekul\'{e} Hopping Textures

open access: yes, 2015
Honeycomb lattice can support electronic states exhibiting Dirac energy dispersion, with graphene as the icon. We propose to derive nontrivial topology by grouping six neighboring sites of honeycomb lattice into hexagons and enhancing the inter-hexagon ...
Hu, Xiao, Wu, Long-Hua
core   +1 more source

Hexagonal

open access: yes, 2011
[ES] Definición del término Hexagonal en el diccionario Dicter. [EN] Definition of the word Hexagonal in the dictionary Dicter.
openaire   +3 more sources

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