Results 11 to 20 of about 135,152 (246)
Hexagones sans centre, centres sans hexagone
Cybergeo, 2012 The triangulo-hexagonal system of Walter Christaller (Die zentralen Orte, 1933) was the subject of sharp debates among German speaking geographers from 1933 until our days.
Anne Radeff
doaj +4 more sources
Journal of High Energy Physics, 2022 Abstract We reduce the computation of three point function of three spinning operators with arbitrary polarizations in 𝒩 = 4 SYM to a statistical mechanics problem via the hexagon formalism. The central building block of these correlation functions is the hexagon partition function.
Bercini, Carlos +3 more
openaire +4 more sources
Hexagonal projected symmetries [PDF]
Acta Crystallographica Section A Foundations and Advances, 2015 In the study of pattern formation in symmetric physical systems, a three-dimensional structure in thin domains is often modelled as a two-dimensional one. This paper is concerned with functions in {\bb R}^{3} that are invariant under the action of a crystallographic group and the symmetries of their projections into a function defined on a plane.
Oliveira, Juliane F. +2 more
openaire +3 more sources
Tiling Generating Functions of Halved Hexagons and Quartered Hexagons [PDF]
Annals of Combinatorics, 2021 We prove exact product formulas for the tiling generating functions of various halved hexagons and quartered hexagons with defects on boundary. Our results generalize the previous work of the first author and the work of Ciucu.
Lai, Tri, Rohatgi, Ranjan
openaire +2 more sources
On semi-finite hexagons of order $(2, t)$ containing a subhexagon [PDF]
, 2016 The research in this paper was motivated by one of the most important open problems in the theory of generalized polygons, namely the existence problem for semi-finite thick generalized polygons.
Bishnoi, Anurag, De Bruyn, Bart
core +3 more sources
A dual of MacMahon's theorem on plane partitions [PDF]
, 2012 A classical theorem of MacMahon states that the number of lozenge tilings of any centrally symmetric hexagon drawn on the triangular lattice is given by a beautifully simple product formula.
Ciucu, Mihai, Krattenthaler, Christian
core +1 more source
Reentrant and Whirling Hexagons in Non-Boussinesq convection [PDF]
, 2007 We review recent computational results for hexagon patterns in non-Boussinesq convection. For sufficiently strong dependence of the fluid parameters on the temperature we find reentrance of steady hexagons, i.e.
Madruga, Santiago, Riecke, Hermann
core +5 more sources
Hydrogenation of aromatic ketones, aldehydes, and epoxides with hydrogen and Pd(0)EnCat™ 30NP
Beilstein Journal of Organic Chemistry, 2006 Aromatic aldehydes and ketones as well as aromatic epoxides are selectively reduced to the corresponding alcohols under mild conditions using conventional hydrogen in the presence of Pd(0)EnCat™ 30NP catalyst.
Steven V. Ley +4 more
doaj +1 more source
PUBLIC-PRIVATE COOPERATION MODELS FOR EFFICIENT ACCESS TO GEOSPATIAL CONTENT [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2021 Traditional public data procurement models for geospatial data sets as basemaps are not any longer alone the spatial reference for decision processes. A fast digitalizing society requires more flexibility and speed in the information streams.
S. W. Musäus
doaj +1 more source
Estimation of ore contour movements after the blast using the BMM system
Записки Горного института, 2020 Measurement of ore movements by blast is one of the key components of the quality control system at any mining enterprise, which allows to obtain the accuracy necessary for determining the location of ore contours. About 15 years ago, a monitoring system
Ruslan A. Rakhmanov +2 more
doaj +1 more source